/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=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-adbd35c [2020-10-13 10:20:24,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:20:24,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:20:24,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:20:24,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:20:24,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:20:24,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:20:24,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:20:24,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:20:24,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:20:24,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:20:24,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:20:24,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:20:24,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:20:24,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:20:24,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:20:24,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:20:24,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:20:24,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:20:24,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:20:24,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:20:24,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:20:24,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:20:24,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:20:24,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:20:24,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:20:24,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:20:24,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:20:24,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:20:24,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:20:24,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:20:24,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:20:24,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:20:24,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:20:24,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:20:24,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:20:24,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:20:24,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:20:24,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:20:24,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:20:24,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:20:24,183 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 [2020-10-13 10:20:24,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:20:24,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:20:24,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:20:24,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:20:24,220 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:20:24,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:20:24,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:20:24,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:20:24,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:20:24,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:20:24,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:20:24,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:20:24,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:20:24,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:20:24,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:20:24,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:20:24,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:20:24,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:20:24,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:20:24,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:20:24,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:20:24,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:24,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:20:24,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:20:24,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:20:24,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:20:24,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:20:24,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:20:24,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:20:24,226 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:20:24,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:20:24,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:20:24,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:20:24,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:20:24,590 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:20:24,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-10-13 10:20:24,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/064da4c07/19cf92523f15494095d3098894ee8ec5/FLAG66bbad09d [2020-10-13 10:20:25,116 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:20:25,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-10-13 10:20:25,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/064da4c07/19cf92523f15494095d3098894ee8ec5/FLAG66bbad09d [2020-10-13 10:20:25,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/064da4c07/19cf92523f15494095d3098894ee8ec5 [2020-10-13 10:20:25,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:20:25,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:20:25,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:25,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:20:25,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:20:25,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:25,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217a2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25, skipping insertion in model container [2020-10-13 10:20:25,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:25,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:20:25,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:20:25,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:25,825 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:20:25,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:25,905 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:20:25,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25 WrapperNode [2020-10-13 10:20:25,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:25,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:20:25,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:20:25,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:20:26,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:26,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:26,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:26,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:26,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:26,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:26,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (1/1) ... [2020-10-13 10:20:26,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:20:26,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:20:26,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:20:26,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:20:26,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (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 [2020-10-13 10:20:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:20:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:20:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-13 10:20:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-10-13 10:20:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-13 10:20:26,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:20:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:20:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:20:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-13 10:20:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:20:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:20:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:20:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:20:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-10-13 10:20:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-13 10:20:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:20:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:20:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:20:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:20:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:20:26,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:20:26,417 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 10:20:26,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:26 BoogieIcfgContainer [2020-10-13 10:20:26,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:20:26,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:20:26,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:20:26,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:20:26,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:20:25" (1/3) ... [2020-10-13 10:20:26,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a315bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:26, skipping insertion in model container [2020-10-13 10:20:26,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:25" (2/3) ... [2020-10-13 10:20:26,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a315bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:26, skipping insertion in model container [2020-10-13 10:20:26,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:26" (3/3) ... [2020-10-13 10:20:26,431 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-10-13 10:20:26,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:20:26,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:20:26,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:20:26,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:20:26,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:20:26,497 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:20:26,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:20:26,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:20:26,498 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:20:26,498 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:20:26,498 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:20:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-13 10:20:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:20:26,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:26,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:20:26,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash -411440866, now seen corresponding path program 1 times [2020-10-13 10:20:26,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:26,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655061694] [2020-10-13 10:20:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:26,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:26,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:20:26,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-13 10:20:26,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:20:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:20:27,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:27,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:27,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:20:27,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:27,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:27,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:27,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:20:27,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:27,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 10:20:27,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:20:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:27,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:20:27,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:20:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:20:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:27,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655061694] [2020-10-13 10:20:27,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:27,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:20:27,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630810289] [2020-10-13 10:20:27,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:20:27,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:27,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:20:27,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:20:27,222 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-13 10:20:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:27,416 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-10-13 10:20:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:20:27,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 10:20:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:27,429 INFO L225 Difference]: With dead ends: 79 [2020-10-13 10:20:27,429 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 10:20:27,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:20:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 10:20:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-13 10:20:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:20:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-13 10:20:27,484 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-10-13 10:20:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:27,484 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-13 10:20:27,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:20:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-13 10:20:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:20:27,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:27,487 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] [2020-10-13 10:20:27,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:20:27,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:27,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1480673795, now seen corresponding path program 1 times [2020-10-13 10:20:27,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:27,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736569221] [2020-10-13 10:20:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:27,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:20:27,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 10:20:27,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:20:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:27,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:27,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:27,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:27,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:27,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:27,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:27,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:20:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 10:20:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:20:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:27,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:27,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:27,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:20:27,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:20:27,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:20:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:27,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736569221] [2020-10-13 10:20:27,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:27,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:20:27,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797131420] [2020-10-13 10:20:27,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:20:27,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:27,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:20:27,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:20:27,780 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-13 10:20:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:28,018 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-13 10:20:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:20:28,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-13 10:20:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:28,022 INFO L225 Difference]: With dead ends: 59 [2020-10-13 10:20:28,022 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:20:28,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:20:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:20:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 10:20:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:20:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:20:28,037 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-10-13 10:20:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:28,037 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:20:28,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:20:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:20:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:20:28,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:28,039 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] [2020-10-13 10:20:28,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:20:28,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash 387656001, now seen corresponding path program 1 times [2020-10-13 10:20:28,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:28,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128940318] [2020-10-13 10:20:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:20:28,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 10:20:28,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:20:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:28,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:28,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:20:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:20:28,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:20:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:20:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:20:28,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:20:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:28,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128940318] [2020-10-13 10:20:28,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:28,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:20:28,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083187730] [2020-10-13 10:20:28,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:20:28,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:20:28,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:20:28,294 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-13 10:20:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:28,545 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-13 10:20:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:20:28,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-13 10:20:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:28,547 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:20:28,547 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 10:20:28,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:20:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 10:20:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-13 10:20:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:20:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:20:28,557 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2020-10-13 10:20:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:28,558 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:20:28,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:20:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:20:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:20:28,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:28,559 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] [2020-10-13 10:20:28,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:20:28,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2028995385, now seen corresponding path program 1 times [2020-10-13 10:20:28,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:28,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202244913] [2020-10-13 10:20:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:20:28,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 10:20:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:20:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:28,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:20:28,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 10:20:28,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:20:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:28,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:20:28,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:20:28,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:20:28,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:28,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202244913] [2020-10-13 10:20:28,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:28,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:20:28,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155493123] [2020-10-13 10:20:28,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:20:28,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:28,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:20:28,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:20:28,764 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-13 10:20:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:28,981 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-13 10:20:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:20:28,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-13 10:20:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:28,983 INFO L225 Difference]: With dead ends: 67 [2020-10-13 10:20:28,983 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:20:28,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:20:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:20:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-10-13 10:20:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:20:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:20:28,992 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 25 [2020-10-13 10:20:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:28,992 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:20:28,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:20:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:20:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:20:28,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:28,994 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] [2020-10-13 10:20:28,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:20:28,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:28,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1766352133, now seen corresponding path program 1 times [2020-10-13 10:20:28,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:28,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876182705] [2020-10-13 10:20:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:20:29,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 10:20:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 10:20:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:29,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:29,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:29,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:29,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:20:29,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 10:20:29,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:20:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:20:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:20:29,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:20:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:29,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876182705] [2020-10-13 10:20:29,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:29,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:20:29,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024098525] [2020-10-13 10:20:29,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:20:29,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:29,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:20:29,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:20:29,185 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-13 10:20:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:29,428 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-13 10:20:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:20:29,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-13 10:20:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:29,430 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:20:29,430 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 10:20:29,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:20:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 10:20:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-13 10:20:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:20:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:20:29,438 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-10-13 10:20:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:29,439 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:20:29,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:20:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:20:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:20:29,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:29,440 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] [2020-10-13 10:20:29,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:20:29,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:29,441 INFO L82 PathProgramCache]: Analyzing trace with hash -30599226, now seen corresponding path program 1 times [2020-10-13 10:20:29,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:29,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964240961] [2020-10-13 10:20:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:20:29,456 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:20:29,457 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:20:29,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:20:29,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:20:29 BoogieIcfgContainer [2020-10-13 10:20:29,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:20:29,486 INFO L168 Benchmark]: Toolchain (without parser) took 3978.09 ms. Allocated memory was 146.8 MB in the beginning and 245.4 MB in the end (delta: 98.6 MB). Free memory was 103.1 MB in the beginning and 188.5 MB in the end (delta: -85.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:29,487 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:29,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.40 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 91.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:29,489 INFO L168 Benchmark]: Boogie Preprocessor took 130.71 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 91.6 MB in the beginning and 179.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:29,490 INFO L168 Benchmark]: RCFGBuilder took 384.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 159.4 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:29,491 INFO L168 Benchmark]: TraceAbstraction took 3059.90 ms. Allocated memory was 201.9 MB in the beginning and 245.4 MB in the end (delta: 43.5 MB). Free memory was 158.8 MB in the beginning and 188.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:29,494 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 397.40 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 91.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.71 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 91.6 MB in the beginning and 179.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 159.4 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3059.90 ms. Allocated memory was 201.9 MB in the beginning and 245.4 MB in the end (delta: 43.5 MB). Free memory was 158.8 MB in the beginning and 188.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 13.8 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, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 207 SDtfs, 191 SDslu, 81 SDs, 0 SdLazy, 577 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 7378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...