/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:33,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:33,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:33,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:33,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:33,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:33,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:33,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:33,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:33,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:33,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:33,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:33,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:33,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:33,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:33,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:33,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:33,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:33,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:33,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:33,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:33,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:33,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:33,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:33,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:33,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:33,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:33,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:33,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:33,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:33,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:33,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:33,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:33,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:33,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:33,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:33,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:33,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:33,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:33,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:33,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:33,533 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 06:41:33,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:33,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:33,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:33,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:33,562 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:33,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:33,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:33,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:33,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:33,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:33,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:33,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:33,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:33,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:33,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:33,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:33,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:33,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:33,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:33,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:33,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:33,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:33,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:33,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:33,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:33,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:33,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:33,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:33,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:33,567 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:41:34,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:34,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:34,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:34,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:34,097 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:34,099 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 06:41:34,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b0235b52/628026b6a50143119476e3d746cfa577/FLAGa64dbcb62 [2020-09-25 06:41:34,895 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:34,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 06:41:34,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b0235b52/628026b6a50143119476e3d746cfa577/FLAGa64dbcb62 [2020-09-25 06:41:35,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b0235b52/628026b6a50143119476e3d746cfa577 [2020-09-25 06:41:35,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:35,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:35,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:35,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:35,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:35,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13df943c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35, skipping insertion in model container [2020-09-25 06:41:35,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:35,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:35,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:35,816 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:35,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:35,953 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:35,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35 WrapperNode [2020-09-25 06:41:35,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:35,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:35,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:35,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:35,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:36,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:36,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:36,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:36,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:36,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:36,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:36,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:36,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (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 06:41:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:41:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:37,525 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:37,525 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:41:37,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:37 BoogieIcfgContainer [2020-09-25 06:41:37,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:37,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:37,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:37,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:37,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:35" (1/3) ... [2020-09-25 06:41:37,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4392fb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:37, skipping insertion in model container [2020-09-25 06:41:37,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (2/3) ... [2020-09-25 06:41:37,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4392fb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:37, skipping insertion in model container [2020-09-25 06:41:37,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:37" (3/3) ... [2020-09-25 06:41:37,556 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-25 06:41:37,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:37,584 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:37,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:37,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:37,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:37,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:37,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:37,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:37,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:37,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:37,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:41:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 06:41:37,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:37,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:37,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:37,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-25 06:41:37,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:37,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886080658] [2020-09-25 06:41:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 06:41:43,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:41:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:41:43,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:41:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 06:41:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:41:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:41:43,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:41:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:41:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:43,349 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 06:41:43,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886080658] [2020-09-25 06:41:43,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:43,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:41:43,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791368921] [2020-09-25 06:41:43,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:41:43,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:43,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:41:43,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:43,383 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:41:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:45,687 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 06:41:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:41:45,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 06:41:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:45,726 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 06:41:45,726 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 06:41:45,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 06:41:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 06:41:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 06:41:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 06:41:45,853 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-25 06:41:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:45,854 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 06:41:45,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:41:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 06:41:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 06:41:45,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:45,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:45,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:45,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:45,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:45,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-25 06:41:45,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:45,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539135785] [2020-09-25 06:41:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:50,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 06:41:50,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:41:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:41:50,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:50,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:41:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 06:41:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:51,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:51,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:41:51,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:41:51,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:51,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:51,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:41:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:51,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:41:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:41:51,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:51,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:41:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:51,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539135785] [2020-09-25 06:41:51,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:51,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:41:51,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276919513] [2020-09-25 06:41:51,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:41:51,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:51,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:41:51,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:51,252 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 06:41:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:54,159 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-25 06:41:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:54,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 06:41:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:54,173 INFO L225 Difference]: With dead ends: 2016 [2020-09-25 06:41:54,173 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 06:41:54,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:41:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 06:41:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-25 06:41:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 06:41:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-25 06:41:54,235 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-25 06:41:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:54,236 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-25 06:41:54,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:41:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-25 06:41:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 06:41:54,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:54,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:54,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:54,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:54,245 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-25 06:41:54,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:54,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337844614] [2020-09-25 06:41:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:59,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 06:41:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:41:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:41:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:59,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 06:41:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 06:41:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:59,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:59,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:41:59,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:41:59,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:59,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:41:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:59,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:41:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:41:59,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:59,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:59,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:41:59,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:59,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337844614] [2020-09-25 06:41:59,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:59,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:41:59,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629821008] [2020-09-25 06:41:59,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:41:59,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:59,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:41:59,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:59,618 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-25 06:42:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:02,030 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-25 06:42:02,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:02,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 06:42:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:02,047 INFO L225 Difference]: With dead ends: 2961 [2020-09-25 06:42:02,047 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 06:42:02,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:42:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 06:42:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-25 06:42:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-25 06:42:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-25 06:42:02,125 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-25 06:42:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:02,127 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-25 06:42:02,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-25 06:42:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 06:42:02,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:02,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:02,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:02,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:02,144 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-25 06:42:02,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:02,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64028072] [2020-09-25 06:42:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 06:42:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:07,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 06:42:07,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:42:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:42:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:07,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:42:07,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:07,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:07,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:42:07,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:42:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:07,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:42:07,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 06:42:07,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:42:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:07,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64028072] [2020-09-25 06:42:07,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:07,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:07,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066568895] [2020-09-25 06:42:07,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:07,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:07,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:07,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:07,498 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 7 states. [2020-09-25 06:42:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:09,911 INFO L93 Difference]: Finished difference Result 4302 states and 5466 transitions. [2020-09-25 06:42:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:09,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 06:42:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:09,931 INFO L225 Difference]: With dead ends: 4302 [2020-09-25 06:42:09,931 INFO L226 Difference]: Without dead ends: 2782 [2020-09-25 06:42:09,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2020-09-25 06:42:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2649. [2020-09-25 06:42:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2649 states. [2020-09-25 06:42:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3276 transitions. [2020-09-25 06:42:10,049 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3276 transitions. Word has length 182 [2020-09-25 06:42:10,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:10,050 INFO L479 AbstractCegarLoop]: Abstraction has 2649 states and 3276 transitions. [2020-09-25 06:42:10,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3276 transitions. [2020-09-25 06:42:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 06:42:10,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:10,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:10,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:10,064 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:10,064 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-25 06:42:10,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:10,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242651393] [2020-09-25 06:42:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:15,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 06:42:15,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:42:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:42:15,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:15,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 06:42:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 06:42:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:15,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:15,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:15,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:42:15,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:15,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:15,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:15,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 06:42:15,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:42:15,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:15,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:42:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:15,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242651393] [2020-09-25 06:42:15,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:15,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:15,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22046110] [2020-09-25 06:42:15,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:15,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:15,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:15,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:15,400 INFO L87 Difference]: Start difference. First operand 2649 states and 3276 transitions. Second operand 5 states. [2020-09-25 06:42:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:17,677 INFO L93 Difference]: Finished difference Result 5344 states and 6618 transitions. [2020-09-25 06:42:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:17,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 06:42:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:17,694 INFO L225 Difference]: With dead ends: 5344 [2020-09-25 06:42:17,694 INFO L226 Difference]: Without dead ends: 2719 [2020-09-25 06:42:17,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:42:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2020-09-25 06:42:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2365. [2020-09-25 06:42:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2020-09-25 06:42:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 2819 transitions. [2020-09-25 06:42:17,767 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 2819 transitions. Word has length 183 [2020-09-25 06:42:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:17,768 INFO L479 AbstractCegarLoop]: Abstraction has 2365 states and 2819 transitions. [2020-09-25 06:42:17,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 2819 transitions. [2020-09-25 06:42:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 06:42:17,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:17,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:17,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:17,779 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:17,779 INFO L82 PathProgramCache]: Analyzing trace with hash -777703907, now seen corresponding path program 1 times [2020-09-25 06:42:17,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:17,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587726064] [2020-09-25 06:42:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 06:42:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:42:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 06:42:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:22,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:42:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:42:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:22,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:22,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:22,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:42:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:22,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:42:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:22,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:23,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 06:42:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 06:42:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:23,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:42:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 06:42:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:23,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:42:23,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:42:23,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:23,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:42:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:23,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:42:23,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587726064] [2020-09-25 06:42:23,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:23,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:23,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800160582] [2020-09-25 06:42:23,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:23,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:23,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:23,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:23,256 INFO L87 Difference]: Start difference. First operand 2365 states and 2819 transitions. Second operand 7 states.