/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 interpolation-heuristic=FIRST --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_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:47,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:47,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:47,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:47,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:47,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:47,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:47,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:47,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:47,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:47,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:47,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:47,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:47,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:47,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:47,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:47,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:47,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:47,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:47,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:47,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:47,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:47,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:47,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:47,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:47,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:47,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:47,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:47,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:47,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:47,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:47,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:47,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:47,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:47,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:47,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:47,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:47,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:47,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:47,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:47,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:47,974 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 11:18:48,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:48,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:48,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:48,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:48,003 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:48,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:48,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:48,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:48,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:48,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:48,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:48,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:48,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:48,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:48,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:48,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:48,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:48,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:48,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:48,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:48,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:48,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:48,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:48,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:48,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:48,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:48,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:48,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:48,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:48,009 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:48,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:48,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:48,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:48,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:48,504 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:48,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-21 11:18:48,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e7f1e2fe/6e82b493121b4f8586253ee4756c16dc/FLAGe81583652 [2020-09-21 11:18:49,098 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:49,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-21 11:18:49,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e7f1e2fe/6e82b493121b4f8586253ee4756c16dc/FLAGe81583652 [2020-09-21 11:18:49,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e7f1e2fe/6e82b493121b4f8586253ee4756c16dc [2020-09-21 11:18:49,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:49,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:49,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:49,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:49,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:49,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49, skipping insertion in model container [2020-09-21 11:18:49,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:49,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:49,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:49,723 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:49,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:49,785 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:49,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49 WrapperNode [2020-09-21 11:18:49,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:49,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:49,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:49,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:49,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:49,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:49,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:49,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:49,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (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 11:18:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-21 11:18:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-21 11:18:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 11:18:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-21 11:18:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-21 11:18:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:50,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:50,385 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 11:18:50,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:50 BoogieIcfgContainer [2020-09-21 11:18:50,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:50,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:50,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:50,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:50,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:49" (1/3) ... [2020-09-21 11:18:50,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aded10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:50, skipping insertion in model container [2020-09-21 11:18:50,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49" (2/3) ... [2020-09-21 11:18:50,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aded10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:50, skipping insertion in model container [2020-09-21 11:18:50,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:50" (3/3) ... [2020-09-21 11:18:50,401 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-09-21 11:18:50,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:50,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:50,448 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:50,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:50,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:50,476 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:50,476 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:50,476 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:50,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:50,477 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:50,477 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-21 11:18:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:18:50,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:50,509 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 11:18:50,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:50,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:50,517 INFO L82 PathProgramCache]: Analyzing trace with hash 397720622, now seen corresponding path program 1 times [2020-09-21 11:18:50,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:50,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786137118] [2020-09-21 11:18:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,681 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,681 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,682 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:18:50,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:50,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:18:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:50,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:50,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,826 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,827 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,827 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:18:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:18:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,849 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:50,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:18:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,867 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:50,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:50,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:50,881 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 11:18:50,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786137118] [2020-09-21 11:18:50,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:50,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:50,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223346135] [2020-09-21 11:18:50,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:50,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:50,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:50,912 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-09-21 11:18:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:51,154 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-09-21 11:18:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:51,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-09-21 11:18:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:51,170 INFO L225 Difference]: With dead ends: 71 [2020-09-21 11:18:51,170 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 11:18:51,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:18:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 11:18:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 11:18:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:18:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-21 11:18:51,230 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-09-21 11:18:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:51,230 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-21 11:18:51,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-21 11:18:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:18:51,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:51,234 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] [2020-09-21 11:18:51,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:51,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash -54823803, now seen corresponding path program 1 times [2020-09-21 11:18:51,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:51,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119557712] [2020-09-21 11:18:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,306 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,306 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,307 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,307 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:18:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,368 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,368 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,369 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,369 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,437 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,437 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,438 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,438 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:18:51,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:18:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:18:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,552 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,553 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,553 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:18:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:18:51,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:18:51,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 11:18:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,589 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,589 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,589 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,623 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 11:18:51,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119557712] [2020-09-21 11:18:51,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:51,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:51,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412280425] [2020-09-21 11:18:51,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:51,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:51,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:51,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:51,629 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2020-09-21 11:18:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:51,901 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-09-21 11:18:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:51,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-21 11:18:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:51,906 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:18:51,906 INFO L226 Difference]: Without dead ends: 40 [2020-09-21 11:18:51,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:18:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-21 11:18:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-21 11:18:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:51,921 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-09-21 11:18:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:51,921 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:51,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:18:51,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:51,923 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] [2020-09-21 11:18:51,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:51,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:51,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1630368017, now seen corresponding path program 1 times [2020-09-21 11:18:51,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:51,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345021438] [2020-09-21 11:18:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,952 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:18:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,990 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,991 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,991 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,993 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:18:51,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,058 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,058 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,058 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,100 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,100 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,101 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:18:52,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:18:52,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:18:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:18:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,123 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:52,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,130 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 11:18:52,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345021438] [2020-09-21 11:18:52,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:52,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:52,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612174456] [2020-09-21 11:18:52,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:52,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:52,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:52,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:52,133 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 11:18:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:52,341 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 11:18:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:52,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 11:18:52,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:52,343 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:18:52,344 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:18:52,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 11:18:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:18:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:18:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:52,354 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 28 [2020-09-21 11:18:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:52,355 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:52,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:52,355 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:18:52,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:52,357 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] [2020-09-21 11:18:52,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:18:52,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash -228020471, now seen corresponding path program 1 times [2020-09-21 11:18:52,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:52,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658406168] [2020-09-21 11:18:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,407 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,407 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,408 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,413 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:18:52,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:18:52,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:18:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,459 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,459 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:52,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,511 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,511 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,511 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:18:52,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:18:52,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:18:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,564 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,564 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:18:52,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:18:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:18:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 11:18:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,594 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:52,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,602 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 11:18:52,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658406168] [2020-09-21 11:18:52,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:52,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:52,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38010422] [2020-09-21 11:18:52,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:52,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:52,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:52,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:52,608 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 11:18:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:52,905 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 11:18:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:52,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-21 11:18:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:52,908 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:18:52,908 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:18:52,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 11:18:52,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:18:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:18:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:52,927 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 29 [2020-09-21 11:18:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:52,927 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:52,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:18:52,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:52,933 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] [2020-09-21 11:18:52,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:18:52,933 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:52,934 INFO L82 PathProgramCache]: Analyzing trace with hash -268248811, now seen corresponding path program 1 times [2020-09-21 11:18:52,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:52,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662334098] [2020-09-21 11:18:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,954 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,954 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:18:52,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:18:52,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 11:18:52,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,976 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,977 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,977 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,977 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:52,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,010 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:18:53,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:18:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,048 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,048 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,049 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:18:53,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:18:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:18:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:53,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:53,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:53,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:53,077 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 11:18:53,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662334098] [2020-09-21 11:18:53,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:53,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:53,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418055881] [2020-09-21 11:18:53,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:53,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:53,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:53,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:53,080 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 11:18:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:53,289 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 11:18:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:53,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-21 11:18:53,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:53,292 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:18:53,293 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:18:53,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 11:18:53,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:18:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:18:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:53,305 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-09-21 11:18:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:53,306 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:53,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:18:53,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:53,308 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] [2020-09-21 11:18:53,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:18:53,308 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:53,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1239302998, now seen corresponding path program 1 times [2020-09-21 11:18:53,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:53,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524179304] [2020-09-21 11:18:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:53,333 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:53,333 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:53,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:18:53,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:53 BoogieIcfgContainer [2020-09-21 11:18:53,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:53,365 INFO L168 Benchmark]: Toolchain (without parser) took 3935.72 ms. Allocated memory was 145.2 MB in the beginning and 248.0 MB in the end (delta: 102.8 MB). Free memory was 101.3 MB in the beginning and 154.0 MB in the end (delta: -52.7 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,366 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:53,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.37 ms. Allocated memory is still 145.2 MB. Free memory was 100.9 MB in the beginning and 89.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,368 INFO L168 Benchmark]: Boogie Preprocessor took 167.00 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 89.4 MB in the beginning and 177.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,369 INFO L168 Benchmark]: RCFGBuilder took 437.25 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 159.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,370 INFO L168 Benchmark]: TraceAbstraction took 2969.57 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 158.4 MB in the beginning and 154.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.37 ms. Allocated memory is still 145.2 MB. Free memory was 100.9 MB in the beginning and 89.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 167.00 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 89.4 MB in the beginning and 177.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.25 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 159.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2969.57 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 158.4 MB in the beginning and 154.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] RET, EXPR fmax_double(x, y) [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) [L16] return x != x; [L71] RET, EXPR isnan_double(res) [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 190 SDtfs, 174 SDslu, 81 SDs, 0 SdLazy, 520 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 1.0s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 8990 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...