/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:59:42,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:59:42,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:59:42,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:59:42,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:59:42,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:59:42,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:59:42,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:59:42,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:59:42,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:59:42,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:59:42,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:59:42,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:59:42,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:59:42,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:59:42,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:59:42,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:59:42,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:59:42,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:59:42,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:59:42,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:59:42,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:59:42,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:59:42,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:59:42,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:59:42,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:59:42,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:59:42,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:59:42,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:59:42,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:59:42,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:59:42,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:59:42,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:59:42,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:59:42,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:59:42,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:59:42,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:59:42,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:59:42,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:59:42,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:59:42,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:59:42,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:59:42,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:59:42,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:59:42,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:59:42,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:59:42,803 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:59:42,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:59:42,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:59:42,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:59:42,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:59:42,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:59:42,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:59:42,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:59:42,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:59:42,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:59:42,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:59:42,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:59:42,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:59:42,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:59:42,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:59:42,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:59:42,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:59:42,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:42,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:59:42,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:59:42,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:59:42,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:59:42,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:59:42,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:59:42,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:59:42,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:59:43,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:59:43,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:59:43,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:59:43,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:59:43,331 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:59:43,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-25 01:59:43,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b61367968/387f221e57a14d37bef31527a68cb4a3/FLAG643d374bc [2020-09-25 01:59:43,992 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:59:43,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-25 01:59:44,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b61367968/387f221e57a14d37bef31527a68cb4a3/FLAG643d374bc [2020-09-25 01:59:44,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b61367968/387f221e57a14d37bef31527a68cb4a3 [2020-09-25 01:59:44,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:59:44,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:59:44,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:44,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:59:44,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:59:44,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6017e0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44, skipping insertion in model container [2020-09-25 01:59:44,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:59:44,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:59:44,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:44,666 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:59:44,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:44,830 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:59:44,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44 WrapperNode [2020-09-25 01:59:44,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:44,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:59:44,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:59:44,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:59:44,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:59:44,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:59:44,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:59:44,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:59:44,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:59:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:59:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 01:59:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 01:59:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-25 01:59:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:59:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:59:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 01:59:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-25 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:59:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:59:45,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:59:45,374 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 01:59:45,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:45 BoogieIcfgContainer [2020-09-25 01:59:45,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:59:45,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:59:45,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:59:45,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:59:45,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:59:44" (1/3) ... [2020-09-25 01:59:45,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36156bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:45, skipping insertion in model container [2020-09-25 01:59:45,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (2/3) ... [2020-09-25 01:59:45,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36156bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:45, skipping insertion in model container [2020-09-25 01:59:45,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:45" (3/3) ... [2020-09-25 01:59:45,391 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-09-25 01:59:45,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:59:45,409 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:59:45,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:59:45,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:59:45,456 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:59:45,456 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:59:45,456 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:59:45,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:59:45,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:59:45,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:59:45,457 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:59:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-25 01:59:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 01:59:45,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:45,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:45,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:45,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1497092675, now seen corresponding path program 1 times [2020-09-25 01:59:45,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:45,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195393128] [2020-09-25 01:59:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 01:59:46,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-25 01:59:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 01:59:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:59:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:46,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:59:46,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:46,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:46,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 01:59:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:59:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:59:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 01:59:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:59:46,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 01:59:46,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:59:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:46,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:59:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:59:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:59:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:46,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195393128] [2020-09-25 01:59:46,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:46,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:59:46,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927491635] [2020-09-25 01:59:46,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:59:46,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:46,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:59:46,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:59:46,444 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 4 states. [2020-09-25 01:59:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:46,744 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2020-09-25 01:59:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:59:46,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-25 01:59:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:46,760 INFO L225 Difference]: With dead ends: 141 [2020-09-25 01:59:46,760 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 01:59:46,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:59:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 01:59:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 01:59:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 01:59:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-09-25 01:59:46,834 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 40 [2020-09-25 01:59:46,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:46,835 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-09-25 01:59:46,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:59:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-09-25 01:59:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 01:59:46,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:46,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:46,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:59:46,840 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:46,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:46,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2105627481, now seen corresponding path program 1 times [2020-09-25 01:59:46,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:46,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401885157] [2020-09-25 01:59:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 01:59:47,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 01:59:47,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 01:59:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:47,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:47,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:47,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:59:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:47,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 01:59:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:59:47,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:59:47,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 01:59:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:59:47,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 01:59:47,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:59:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:59:47,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 01:59:47,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:59:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:47,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401885157] [2020-09-25 01:59:47,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:47,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:47,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729959062] [2020-09-25 01:59:47,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:47,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:47,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:47,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:47,595 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 6 states. [2020-09-25 01:59:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:47,834 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-09-25 01:59:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:47,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 01:59:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:47,839 INFO L225 Difference]: With dead ends: 88 [2020-09-25 01:59:47,840 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 01:59:47,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 01:59:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-09-25 01:59:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 01:59:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-25 01:59:47,857 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 54 [2020-09-25 01:59:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:47,858 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-25 01:59:47,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-25 01:59:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 01:59:47,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:47,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:47,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:59:47,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:47,861 INFO L82 PathProgramCache]: Analyzing trace with hash -14326599, now seen corresponding path program 1 times [2020-09-25 01:59:47,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:47,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727833869] [2020-09-25 01:59:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 01:59:48,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 01:59:48,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 01:59:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:59:48,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:48,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:59:48,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 01:59:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:59:48,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:59:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 01:59:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 01:59:48,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 01:59:48,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 01:59:48,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 01:59:48,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 01:59:48,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 01:59:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:48,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727833869] [2020-09-25 01:59:48,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:48,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:48,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343537958] [2020-09-25 01:59:48,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:48,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:48,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:48,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:48,409 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-25 01:59:48,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:48,606 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-25 01:59:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:48,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 01:59:48,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:48,609 INFO L225 Difference]: With dead ends: 92 [2020-09-25 01:59:48,609 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 01:59:48,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 01:59:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-25 01:59:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 01:59:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-25 01:59:48,621 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 55 [2020-09-25 01:59:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:48,621 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-25 01:59:48,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-25 01:59:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 01:59:48,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:48,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:48,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:59:48,624 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:48,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:48,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1519558622, now seen corresponding path program 1 times [2020-09-25 01:59:48,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:48,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64667894] [2020-09-25 01:59:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 01:59:48,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 01:59:48,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 01:59:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:48,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:59:48,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 01:59:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:59:48,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:59:48,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 01:59:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:59:48,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 01:59:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:59:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 01:59:49,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 01:59:49,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:59:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:49,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64667894] [2020-09-25 01:59:49,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:49,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:49,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86373030] [2020-09-25 01:59:49,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:49,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:49,062 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-25 01:59:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:49,257 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-25 01:59:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:49,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-25 01:59:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:49,260 INFO L225 Difference]: With dead ends: 92 [2020-09-25 01:59:49,260 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 01:59:49,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 01:59:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-25 01:59:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 01:59:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-25 01:59:49,283 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 56 [2020-09-25 01:59:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:49,284 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-25 01:59:49,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-25 01:59:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 01:59:49,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:49,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:49,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:59:49,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash 358345182, now seen corresponding path program 1 times [2020-09-25 01:59:49,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:49,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95275974] [2020-09-25 01:59:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 01:59:49,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 01:59:49,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 01:59:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:59:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 01:59:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:59:49,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:59:49,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 01:59:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 01:59:49,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 01:59:49,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 01:59:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 01:59:49,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 01:59:49,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:59:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:49,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95275974] [2020-09-25 01:59:49,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:49,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:49,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925160225] [2020-09-25 01:59:49,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:49,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:49,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:49,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:49,741 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-25 01:59:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:49,923 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-25 01:59:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:49,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-09-25 01:59:49,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:49,926 INFO L225 Difference]: With dead ends: 92 [2020-09-25 01:59:49,926 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 01:59:49,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 01:59:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-25 01:59:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 01:59:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-25 01:59:49,936 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 57 [2020-09-25 01:59:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:49,936 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-25 01:59:49,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-25 01:59:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 01:59:49,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:49,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:49,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:59:49,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:49,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:49,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1239578082, now seen corresponding path program 1 times [2020-09-25 01:59:49,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:49,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534993318] [2020-09-25 01:59:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:59:49,961 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:59:49,961 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:59:49,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:59:49,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:59:49 BoogieIcfgContainer [2020-09-25 01:59:49,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:59:49,995 INFO L168 Benchmark]: Toolchain (without parser) took 5638.51 ms. Allocated memory was 146.3 MB in the beginning and 248.5 MB in the end (delta: 102.2 MB). Free memory was 101.1 MB in the beginning and 129.7 MB in the end (delta: -28.6 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:49,995 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:59:49,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.03 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 181.2 MB in the end (delta: -80.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:49,997 INFO L168 Benchmark]: Boogie Preprocessor took 57.47 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:49,998 INFO L168 Benchmark]: RCFGBuilder took 491.91 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 156.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:49,999 INFO L168 Benchmark]: TraceAbstraction took 4608.28 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 156.1 MB in the beginning and 129.7 MB in the end (delta: 26.4 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:50,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 469.03 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 181.2 MB in the end (delta: -80.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.47 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.91 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 156.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4608.28 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 156.1 MB in the beginning and 129.7 MB in the end (delta: 26.4 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L62] CALL, EXPR isnan_double(x) [L16] return x != x; [L62] RET, EXPR isnan_double(x) [L62] COND TRUE !isnan_double(x) [L64] CALL, EXPR fmin_double(x, y) [L45] CALL, EXPR __fpclassify_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] RET, EXPR __fpclassify_double(x) [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] RET, EXPR fmin_double(x, y) [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 401 SDtfs, 157 SDslu, 734 SDs, 0 SdLazy, 575 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 24072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...