/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 --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=1000 --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_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:39,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:39,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:39,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:39,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:39,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:39,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:39,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:39,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:39,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:39,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:39,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:39,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:39,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:39,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:39,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:39,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:39,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:39,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:39,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:39,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:39,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:39,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:39,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:39,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:39,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:39,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:39,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:39,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:39,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:39,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:39,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:39,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:39,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:39,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:39,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:39,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:39,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:39,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:39,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:39,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:39,738 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 [2020-09-21 12:20:39,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:39,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:39,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:39,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:39,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:39,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:39,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:39,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:39,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:39,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:39,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:39,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:39,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:39,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:39,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:39,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:39,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:39,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:39,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:39,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:39,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:39,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:39,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:39,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:39,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:39,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:39,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:39,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:39,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:39,814 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.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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:20:40,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:40,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:40,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:40,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:40,367 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:40,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-09-21 12:20:40,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69e9224c4/2b82238a04dd41febe8bb33123034dde/FLAG3adba8cc2 [2020-09-21 12:20:40,990 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:40,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-09-21 12:20:41,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69e9224c4/2b82238a04dd41febe8bb33123034dde/FLAG3adba8cc2 [2020-09-21 12:20:41,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69e9224c4/2b82238a04dd41febe8bb33123034dde [2020-09-21 12:20:41,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:41,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:41,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:41,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:41,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:41,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41, skipping insertion in model container [2020-09-21 12:20:41,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:41,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:41,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:41,647 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:41,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:41,799 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:41,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41 WrapperNode [2020-09-21 12:20:41,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:41,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:41,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:41,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:41,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (1/1) ... [2020-09-21 12:20:41,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:41,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:41,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:41,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:41,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (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 [2020-09-21 12:20:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 12:20:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-21 12:20:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-21 12:20:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 12:20:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 12:20:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 12:20:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-21 12:20:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-21 12:20:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 12:20:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:42,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:42,289 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 12:20:42,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:42 BoogieIcfgContainer [2020-09-21 12:20:42,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:42,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:42,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:42,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:42,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:41" (1/3) ... [2020-09-21 12:20:42,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6a65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:42, skipping insertion in model container [2020-09-21 12:20:42,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:41" (2/3) ... [2020-09-21 12:20:42,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6a65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:42, skipping insertion in model container [2020-09-21 12:20:42,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:42" (3/3) ... [2020-09-21 12:20:42,305 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-09-21 12:20:42,317 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:42,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:42,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:42,401 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:42,401 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:42,401 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:42,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:42,402 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:42,402 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:42,402 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:42,402 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-21 12:20:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 12:20:42,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:42,433 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] [2020-09-21 12:20:42,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:42,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:42,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1786760399, now seen corresponding path program 1 times [2020-09-21 12:20:42,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:42,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346020550] [2020-09-21 12:20:42,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:42,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:20:43,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-09-21 12:20:43,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:20:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:20:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:43,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:43,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:20:43,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:20:43,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:43,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:20:43,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:43,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:20:43,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:43,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:43,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:20:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:43,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:20:43,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:20:43,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:43,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346020550] [2020-09-21 12:20:43,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:43,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:43,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429658106] [2020-09-21 12:20:43,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:43,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:43,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:43,282 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-09-21 12:20:43,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:43,514 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-09-21 12:20:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:43,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-21 12:20:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:43,530 INFO L225 Difference]: With dead ends: 79 [2020-09-21 12:20:43,530 INFO L226 Difference]: Without dead ends: 40 [2020-09-21 12:20:43,535 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 [2020-09-21 12:20:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-21 12:20:43,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-21 12:20:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 12:20:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 12:20:43,598 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-09-21 12:20:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:43,599 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 12:20:43,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 12:20:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 12:20:43,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:43,603 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] [2020-09-21 12:20:43,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:43,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:43,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:43,604 INFO L82 PathProgramCache]: Analyzing trace with hash -952976765, now seen corresponding path program 1 times [2020-09-21 12:20:43,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:43,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139818764] [2020-09-21 12:20:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:43,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:20:43,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:43,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-21 12:20:43,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:20:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:43,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:43,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:43,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:20:43,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:20:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:44,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:44,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:20:44,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 12:20:44,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 12:20:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:44,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:20:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:44,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:44,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:20:44,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:20:44,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:20:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:44,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139818764] [2020-09-21 12:20:44,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:44,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:20:44,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000626238] [2020-09-21 12:20:44,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:20:44,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:44,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:20:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:20:44,154 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 12:20:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:44,401 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-21 12:20:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:20:44,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-21 12:20:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:44,406 INFO L225 Difference]: With dead ends: 59 [2020-09-21 12:20:44,406 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:20:44,408 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 [2020-09-21 12:20:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:20:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-21 12:20:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:20:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-21 12:20:44,422 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-09-21 12:20:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:44,423 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-21 12:20:44,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:20:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-21 12:20:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:20:44,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:44,425 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] [2020-09-21 12:20:44,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:44,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:44,426 INFO L82 PathProgramCache]: Analyzing trace with hash -494518028, now seen corresponding path program 1 times [2020-09-21 12:20:44,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:44,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079508157] [2020-09-21 12:20:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:44,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:44,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:20:44,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-21 12:20:44,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:20:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:44,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:44,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:44,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:20:44,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:44,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:44,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:44,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:20:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:20:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:20:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:20:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:44,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:20:44,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:20:44,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:20:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:44,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079508157] [2020-09-21 12:20:44,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:44,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:20:44,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757987980] [2020-09-21 12:20:44,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:20:44,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:44,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:20:44,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:20:44,788 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-09-21 12:20:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:45,145 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-21 12:20:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:20:45,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-21 12:20:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:45,147 INFO L225 Difference]: With dead ends: 63 [2020-09-21 12:20:45,147 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 12:20:45,148 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 [2020-09-21 12:20:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 12:20:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-21 12:20:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:20:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-21 12:20:45,158 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2020-09-21 12:20:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:45,159 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-21 12:20:45,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:20:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-21 12:20:45,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:20:45,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:45,160 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] [2020-09-21 12:20:45,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:20:45,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:45,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:45,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2060037209, now seen corresponding path program 1 times [2020-09-21 12:20:45,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:45,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341438723] [2020-09-21 12:20:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:45,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:45,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:45,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:20:45,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:45,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-21 12:20:45,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:45,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:20:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:45,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:45,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:45,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:45,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:45,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:45,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:20:45,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:45,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:45,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:20:45,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:20:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:20:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:20:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:45,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:45,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:20:45,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:20:45,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:20:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:45,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341438723] [2020-09-21 12:20:45,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:45,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:20:45,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982849380] [2020-09-21 12:20:45,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:20:45,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:45,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:20:45,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:20:45,512 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-09-21 12:20:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:45,740 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-21 12:20:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:20:45,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-21 12:20:45,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:45,743 INFO L225 Difference]: With dead ends: 63 [2020-09-21 12:20:45,743 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 12:20:45,744 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 [2020-09-21 12:20:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 12:20:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-21 12:20:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:20:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-21 12:20:45,752 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 25 [2020-09-21 12:20:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:45,753 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-21 12:20:45,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:20:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-21 12:20:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 12:20:45,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:45,754 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] [2020-09-21 12:20:45,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:20:45,755 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1944362408, now seen corresponding path program 1 times [2020-09-21 12:20:45,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:45,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494685700] [2020-09-21 12:20:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:45,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:45,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:45,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:20:45,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:20:45,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:20:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:45,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:45,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:45,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:20:45,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:45,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:45,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:20:45,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:45,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:20:46,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:20:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:20:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:46,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:20:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:46,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:20:46,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:20:46,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:20:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:20:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:46,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494685700] [2020-09-21 12:20:46,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:46,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:20:46,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368318874] [2020-09-21 12:20:46,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:20:46,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:20:46,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:20:46,124 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-09-21 12:20:46,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:46,324 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-21 12:20:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:20:46,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-21 12:20:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:46,327 INFO L225 Difference]: With dead ends: 63 [2020-09-21 12:20:46,327 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 12:20:46,327 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 [2020-09-21 12:20:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 12:20:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-21 12:20:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:20:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-21 12:20:46,335 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-09-21 12:20:46,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:46,336 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-21 12:20:46,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:20:46,336 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-21 12:20:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 12:20:46,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:46,337 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] [2020-09-21 12:20:46,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:20:46,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:46,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:46,338 INFO L82 PathProgramCache]: Analyzing trace with hash 553653529, now seen corresponding path program 1 times [2020-09-21 12:20:46,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:46,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892399715] [2020-09-21 12:20:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:46,355 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:46,355 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:46,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:20:46,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:46 BoogieIcfgContainer [2020-09-21 12:20:46,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:46,386 INFO L168 Benchmark]: Toolchain (without parser) took 5062.06 ms. Allocated memory was 138.9 MB in the beginning and 248.5 MB in the end (delta: 109.6 MB). Free memory was 102.3 MB in the beginning and 181.6 MB in the end (delta: -79.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:46,387 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:46,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.66 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 101.6 MB in the beginning and 178.6 MB in the end (delta: -77.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:46,389 INFO L168 Benchmark]: Boogie Preprocessor took 50.67 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 176.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:46,390 INFO L168 Benchmark]: RCFGBuilder took 443.36 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 155.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:46,391 INFO L168 Benchmark]: TraceAbstraction took 4085.77 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 154.6 MB in the beginning and 181.6 MB in the end (delta: -27.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:46,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 473.66 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 101.6 MB in the beginning and 178.6 MB in the end (delta: -77.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.67 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 176.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.36 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 155.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4085.77 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 154.6 MB in the beginning and 181.6 MB in the end (delta: -27.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; [L76] CALL, EXPR fmin_double(x, y) [L46] CALL, EXPR __fpclassify_double(x) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] RET, EXPR __fpclassify_double(x) [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] RET, EXPR fmin_double(x, y) [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 207 SDtfs, 191 SDslu, 81 SDs, 0 SdLazy, 578 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s 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, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 7570 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...