/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=SMALLEST --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/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:10:54,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:10:54,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:10:54,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:10:54,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:10:54,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:10:54,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:10:54,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:10:54,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:10:54,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:10:54,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:10:54,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:10:54,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:10:54,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:10:54,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:10:54,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:10:54,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:10:54,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:10:54,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:10:54,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:10:54,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:10:54,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:10:54,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:10:54,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:10:54,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:10:54,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:10:54,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:10:54,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:10:54,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:10:54,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:10:54,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:10:54,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:10:54,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:10:54,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:10:54,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:10:54,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:10:54,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:10:54,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:10:54,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:10:54,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:10:54,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:10:54,260 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 [2020-09-24 18:10:54,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:10:54,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:10:54,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:10:54,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:10:54,321 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:10:54,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:10:54,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:10:54,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:10:54,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:10:54,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:10:54,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:10:54,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:10:54,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:10:54,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:10:54,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:10:54,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:10:54,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:10:54,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:10:54,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:10:54,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:10:54,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:10:54,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:10:54,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:10:54,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:10:54,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:10:54,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:10:54,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:10:54,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:10:54,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:10:54,329 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:10:54,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:10:54,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:10:54,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:10:54,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:10:54,836 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:10:54,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-24 18:10:54,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5031a5d29/9d88ae79ce8c4280b76ddd44409e9bce/FLAG005b0bf62 [2020-09-24 18:10:55,452 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:10:55,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-24 18:10:55,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5031a5d29/9d88ae79ce8c4280b76ddd44409e9bce/FLAG005b0bf62 [2020-09-24 18:10:55,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5031a5d29/9d88ae79ce8c4280b76ddd44409e9bce [2020-09-24 18:10:55,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:10:55,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:10:55,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:10:55,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:10:55,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:10:55,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3653af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55, skipping insertion in model container [2020-09-24 18:10:55,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:10:55,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:10:56,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:10:56,110 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:10:56,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:10:56,177 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:10:56,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56 WrapperNode [2020-09-24 18:10:56,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:10:56,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:10:56,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:10:56,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:10:56,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (1/1) ... [2020-09-24 18:10:56,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (1/1) ... [2020-09-24 18:10:56,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (1/1) ... [2020-09-24 18:10:56,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (1/1) ... [2020-09-24 18:10:56,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (1/1) ... [2020-09-24 18:10:56,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (1/1) ... [2020-09-24 18:10:56,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (1/1) ... [2020-09-24 18:10:56,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:10:56,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:10:56,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:10:56,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:10:56,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (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 [2020-09-24 18:10:56,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:10:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:10:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 18:10:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 18:10:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-24 18:10:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:10:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:10:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 18:10:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 18:10:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 18:10:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:10:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 18:10:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:10:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:10:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-24 18:10:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:10:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:10:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:10:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 18:10:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:10:56,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:10:56,777 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:10:56,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:56 BoogieIcfgContainer [2020-09-24 18:10:56,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:10:56,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:10:56,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:10:56,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:10:56,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:10:55" (1/3) ... [2020-09-24 18:10:56,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139e0885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:56, skipping insertion in model container [2020-09-24 18:10:56,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:56" (2/3) ... [2020-09-24 18:10:56,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139e0885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:56, skipping insertion in model container [2020-09-24 18:10:56,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:56" (3/3) ... [2020-09-24 18:10:56,793 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-09-24 18:10:56,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:10:56,816 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:10:56,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:10:56,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:10:56,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:10:56,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:10:56,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:10:56,873 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:10:56,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:10:56,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:10:56,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:10:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-24 18:10:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 18:10:56,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:56,909 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] [2020-09-24 18:10:56,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:56,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1497092675, now seen corresponding path program 1 times [2020-09-24 18:10:56,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:56,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944161913] [2020-09-24 18:10:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:10:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:10:57,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:10:57,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-24 18:10:57,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:10:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 18:10:57,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:10:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:10:57,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:10:57,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:57,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:10:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:10:57,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:10:57,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:10:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:10:57,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:10:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:10:57,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:10:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:10:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:10:57,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:10:57,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:10:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:10:57,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944161913] [2020-09-24 18:10:57,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:10:57,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:10:57,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221906453] [2020-09-24 18:10:57,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:10:57,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:10:57,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:10:57,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:10:57,786 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 4 states. [2020-09-24 18:10:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:10:58,115 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2020-09-24 18:10:58,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:10:58,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 18:10:58,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:10:58,141 INFO L225 Difference]: With dead ends: 141 [2020-09-24 18:10:58,141 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 18:10:58,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:10:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 18:10:58,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 18:10:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 18:10:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-09-24 18:10:58,220 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 40 [2020-09-24 18:10:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:10:58,221 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-09-24 18:10:58,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:10:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-09-24 18:10:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 18:10:58,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:58,225 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:10:58,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:10:58,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:58,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2105627481, now seen corresponding path program 1 times [2020-09-24 18:10:58,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:58,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748694637] [2020-09-24 18:10:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:10:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:58,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 18:10:58,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-24 18:10:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:10:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:10:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:10:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:10:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:10:58,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:10:58,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:10:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:58,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:58,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:10:58,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:10:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:10:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:58,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:58,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:10:58,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 18:10:58,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:10:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 18:10:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:10:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:10:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:58,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:58,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:10:58,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:10:58,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:10:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:10:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:10:58,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748694637] [2020-09-24 18:10:58,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:10:58,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:10:58,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140487743] [2020-09-24 18:10:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:10:58,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:10:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:10:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:10:58,958 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 6 states. [2020-09-24 18:10:59,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:10:59,168 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-09-24 18:10:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:10:59,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-24 18:10:59,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:10:59,173 INFO L225 Difference]: With dead ends: 88 [2020-09-24 18:10:59,174 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 18:10:59,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:10:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 18:10:59,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-09-24 18:10:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 18:10:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 18:10:59,190 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 54 [2020-09-24 18:10:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:10:59,190 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 18:10:59,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:10:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 18:10:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 18:10:59,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:59,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:10:59,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:10:59,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -14326599, now seen corresponding path program 1 times [2020-09-24 18:10:59,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:59,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598519883] [2020-09-24 18:10:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:10:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:59,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 18:10:59,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 18:10:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:10:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 18:10:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:10:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:10:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:10:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:59,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:59,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:10:59,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:10:59,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:10:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:59,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:10:59,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:10:59,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:10:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:59,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:59,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 18:10:59,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:10:59,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:10:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 18:10:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:10:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:59,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:10:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:59,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:10:59,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:10:59,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:10:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:10:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:10:59,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598519883] [2020-09-24 18:10:59,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:10:59,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:10:59,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741585071] [2020-09-24 18:10:59,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:10:59,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:10:59,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:10:59,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:10:59,715 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 18:10:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:10:59,965 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 18:10:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:10:59,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-24 18:10:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:10:59,968 INFO L225 Difference]: With dead ends: 92 [2020-09-24 18:10:59,968 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 18:10:59,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:10:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 18:10:59,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 18:10:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 18:10:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 18:10:59,980 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 55 [2020-09-24 18:10:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:10:59,980 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 18:10:59,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:10:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 18:10:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 18:10:59,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:59,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:10:59,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:10:59,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:59,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1519558622, now seen corresponding path program 1 times [2020-09-24 18:10:59,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:59,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805745578] [2020-09-24 18:10:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:11:00,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 18:11:00,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 18:11:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:11:00,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:00,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:11:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:00,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:00,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:00,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:11:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 18:11:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:11:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 18:11:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:11:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:11:00,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:11:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:11:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:11:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:11:00,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805745578] [2020-09-24 18:11:00,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:00,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:00,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489870859] [2020-09-24 18:11:00,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:00,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:00,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:00,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:00,413 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 18:11:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:00,667 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 18:11:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:00,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 18:11:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:00,671 INFO L225 Difference]: With dead ends: 92 [2020-09-24 18:11:00,671 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 18:11:00,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 18:11:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 18:11:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 18:11:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 18:11:00,690 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 56 [2020-09-24 18:11:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:00,690 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 18:11:00,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 18:11:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 18:11:00,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:00,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:00,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:11:00,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 358345182, now seen corresponding path program 1 times [2020-09-24 18:11:00,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:00,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291830436] [2020-09-24 18:11:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 18:11:00,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 18:11:00,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:11:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:11:00,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:00,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:11:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:00,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:00,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 18:11:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:00,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:01,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:01,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:11:01,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:11:01,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 18:11:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:11:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:01,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:01,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:01,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:11:01,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:11:01,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:11:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:11:01,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291830436] [2020-09-24 18:11:01,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:01,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:01,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938409947] [2020-09-24 18:11:01,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:01,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:01,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:01,141 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 18:11:01,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:01,335 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 18:11:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:01,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-09-24 18:11:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:01,338 INFO L225 Difference]: With dead ends: 92 [2020-09-24 18:11:01,338 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 18:11:01,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 18:11:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 18:11:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 18:11:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 18:11:01,346 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 57 [2020-09-24 18:11:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:01,347 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 18:11:01,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 18:11:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 18:11:01,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:01,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:01,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:11:01,349 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:01,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1239578082, now seen corresponding path program 1 times [2020-09-24 18:11:01,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:01,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695829081] [2020-09-24 18:11:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:11:01,370 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:11:01,370 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:11:01,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:11:01,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:11:01 BoogieIcfgContainer [2020-09-24 18:11:01,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:11:01,402 INFO L168 Benchmark]: Toolchain (without parser) took 5619.54 ms. Allocated memory was 147.8 MB in the beginning and 244.3 MB in the end (delta: 96.5 MB). Free memory was 102.3 MB in the beginning and 109.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:01,403 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 120.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 18:11:01,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.97 ms. Allocated memory is still 147.8 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:01,405 INFO L168 Benchmark]: Boogie Preprocessor took 144.84 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 90.9 MB in the beginning and 181.8 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:01,406 INFO L168 Benchmark]: RCFGBuilder took 459.60 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 159.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:01,407 INFO L168 Benchmark]: TraceAbstraction took 4613.67 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 158.8 MB in the beginning and 109.2 MB in the end (delta: 49.6 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:01,411 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 120.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.97 ms. Allocated memory is still 147.8 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.84 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 90.9 MB in the beginning and 181.8 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.60 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 159.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4613.67 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 158.8 MB in the beginning and 109.2 MB in the end (delta: 49.6 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L62] CALL, EXPR isnan_double(x) [L16] return x != x; [L62] RET, EXPR isnan_double(x) [L62] COND TRUE !isnan_double(x) [L64] CALL, EXPR fmin_double(x, y) [L45] CALL, EXPR __fpclassify_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] RET, EXPR __fpclassify_double(x) [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] RET, EXPR fmin_double(x, y) [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 401 SDtfs, 157 SDslu, 734 SDs, 0 SdLazy, 575 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 24072 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...