/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:07:58,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:07:58,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:07:58,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:07:58,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:07:58,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:07:58,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:07:58,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:07:58,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:07:58,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:07:58,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:07:58,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:07:58,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:07:58,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:07:58,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:07:58,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:07:58,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:07:58,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:07:58,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:07:58,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:07:58,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:07:58,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:07:58,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:07:58,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:07:58,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:07:58,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:07:58,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:07:58,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:07:58,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:07:58,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:07:58,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:07:58,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:07:58,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:07:58,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:07:58,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:07:58,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:07:58,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:07:58,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:07:58,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:07:58,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:07:58,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:07:58,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:07:58,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:07:58,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:07:58,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:07:58,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:07:58,829 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:07:58,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:07:58,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:07:58,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:07:58,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:07:58,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:07:58,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:07:58,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:07:58,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:07:58,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:07:58,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:07:58,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:07:58,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:07:58,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:07:58,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:07:58,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:07:58,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:07:58,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:07:58,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:07:58,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:07:58,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:07:58,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:07:58,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:07:58,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:07:58,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:07:58,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:07:59,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:07:59,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:07:59,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:07:59,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:07:59,343 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:07:59,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-09-25 03:07:59,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b85ad6ac/9c47d624137f4c62bae68912db86d347/FLAGafcf7ade1 [2020-09-25 03:07:59,997 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:07:59,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-09-25 03:08:00,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b85ad6ac/9c47d624137f4c62bae68912db86d347/FLAGafcf7ade1 [2020-09-25 03:08:00,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b85ad6ac/9c47d624137f4c62bae68912db86d347 [2020-09-25 03:08:00,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:00,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:00,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:00,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:00,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:00,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e09f978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00, skipping insertion in model container [2020-09-25 03:08:00,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:00,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:00,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:00,711 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:00,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:00,861 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:00,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00 WrapperNode [2020-09-25 03:08:00,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:00,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:00,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:00,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:00,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... [2020-09-25 03:08:00,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:00,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:00,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:00,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:00,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-25 03:08:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-25 03:08:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-25 03:08:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-25 03:08:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 03:08:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-25 03:08:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:08:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 03:08:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:08:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:08:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-25 03:08:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-25 03:08:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:08:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 03:08:01,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:01,445 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 03:08:01,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:01 BoogieIcfgContainer [2020-09-25 03:08:01,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:01,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:01,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:01,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:01,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:00" (1/3) ... [2020-09-25 03:08:01,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a6ce93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:01, skipping insertion in model container [2020-09-25 03:08:01,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (2/3) ... [2020-09-25 03:08:01,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a6ce93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:01, skipping insertion in model container [2020-09-25 03:08:01,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:01" (3/3) ... [2020-09-25 03:08:01,461 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-09-25 03:08:01,471 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:01,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:01,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:01,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:01,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:01,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:01,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:01,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:01,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:01,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:01,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-25 03:08:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:08:01,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:01,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:01,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:01,575 INFO L82 PathProgramCache]: Analyzing trace with hash -380814032, now seen corresponding path program 1 times [2020-09-25 03:08:01,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:01,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226445555] [2020-09-25 03:08:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-25 03:08:02,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:08:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 03:08:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:08:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:08:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:02,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:02,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:02,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:08:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:08:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:02,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:02,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 03:08:02,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:08:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:08:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:08:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:08:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:08:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:08:02,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 03:08:02,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:08:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:02,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226445555] [2020-09-25 03:08:02,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:02,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:08:02,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253481479] [2020-09-25 03:08:02,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:08:02,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:02,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:08:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:02,440 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 6 states. [2020-09-25 03:08:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:02,822 INFO L93 Difference]: Finished difference Result 169 states and 199 transitions. [2020-09-25 03:08:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:08:02,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 03:08:02,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:02,840 INFO L225 Difference]: With dead ends: 169 [2020-09-25 03:08:02,840 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 03:08:02,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 03:08:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-09-25 03:08:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 03:08:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-25 03:08:02,911 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 34 [2020-09-25 03:08:02,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:02,912 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-25 03:08:02,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:08:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-25 03:08:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 03:08:02,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:02,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:02,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:02,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:02,917 INFO L82 PathProgramCache]: Analyzing trace with hash 619089939, now seen corresponding path program 1 times [2020-09-25 03:08:02,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:02,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721522319] [2020-09-25 03:08:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:03,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 03:08:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 03:08:03,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:08:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 03:08:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:08:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:03,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:03,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:03,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:08:03,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:03,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:08:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:03,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:03,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 03:08:03,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:03,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 03:08:03,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:08:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:08:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:08:03,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:08:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:03,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:03,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:08:03,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 03:08:03,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:08:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:03,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721522319] [2020-09-25 03:08:03,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:03,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:08:03,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846383636] [2020-09-25 03:08:03,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:08:03,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:08:03,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:03,478 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-25 03:08:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:03,740 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-25 03:08:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:08:03,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-25 03:08:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:03,744 INFO L225 Difference]: With dead ends: 121 [2020-09-25 03:08:03,744 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 03:08:03,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 03:08:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-25 03:08:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 03:08:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-25 03:08:03,760 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-09-25 03:08:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:03,760 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-25 03:08:03,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:08:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-25 03:08:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 03:08:03,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:03,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:03,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:08:03,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:03,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:03,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1331564627, now seen corresponding path program 1 times [2020-09-25 03:08:03,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:03,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596549436] [2020-09-25 03:08:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:08:03,785 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:08:03,786 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:08:03,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:08:03,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:08:03 BoogieIcfgContainer [2020-09-25 03:08:03,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:08:03,817 INFO L168 Benchmark]: Toolchain (without parser) took 3449.19 ms. Allocated memory was 138.4 MB in the beginning and 232.8 MB in the end (delta: 94.4 MB). Free memory was 101.1 MB in the beginning and 110.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:03,818 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 03:08:03,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.76 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 180.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:03,820 INFO L168 Benchmark]: Boogie Preprocessor took 55.83 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:03,821 INFO L168 Benchmark]: RCFGBuilder took 532.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 154.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:03,822 INFO L168 Benchmark]: TraceAbstraction took 2360.55 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 153.9 MB in the beginning and 110.6 MB in the end (delta: 43.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:03,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.76 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 180.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.83 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 154.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2360.55 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 153.9 MB in the beginning and 110.6 MB in the end (delta: 43.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; [L66] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] RET, EXPR fmin_float(x, y) [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 36 SDslu, 431 SDs, 0 SdLazy, 254 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 6312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...