/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=0.4 --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/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:54,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:54,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:54,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:54,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:54,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:54,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:54,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:54,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:54,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:54,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:54,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:54,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:54,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:54,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:54,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:54,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:54,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:54,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:54,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:54,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:54,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:54,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:54,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:54,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:54,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:54,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:54,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:54,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:54,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:54,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:54,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:54,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:54,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:54,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:54,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:54,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:54,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:54,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:54,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:54,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:54,413 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 05:37:54,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:54,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:54,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:54,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:54,460 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:54,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:54,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:54,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:54,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:54,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:54,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:54,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:54,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:54,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:54,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:54,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:54,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:54,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:54,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:54,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:54,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:54,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:54,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:54,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:54,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:54,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:54,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:54,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:54,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:54,467 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:37:54,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:54,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:54,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:54,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:54,968 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:54,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 05:37:55,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49054e0e/eb4b2f8ddf234b04920d9bc9ca429140/FLAGf13ae8196 [2020-09-25 05:37:55,686 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:55,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 05:37:55,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49054e0e/eb4b2f8ddf234b04920d9bc9ca429140/FLAGf13ae8196 [2020-09-25 05:37:55,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49054e0e/eb4b2f8ddf234b04920d9bc9ca429140 [2020-09-25 05:37:55,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:55,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:55,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:55,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:55,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:55,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:55" (1/1) ... [2020-09-25 05:37:55,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:55, skipping insertion in model container [2020-09-25 05:37:55,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:55" (1/1) ... [2020-09-25 05:37:55,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:56,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:56,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:56,518 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:56,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:56,735 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:56,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56 WrapperNode [2020-09-25 05:37:56,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:56,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:56,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:56,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:56,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... [2020-09-25 05:37:56,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... [2020-09-25 05:37:56,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... [2020-09-25 05:37:56,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... [2020-09-25 05:37:56,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... [2020-09-25 05:37:56,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... [2020-09-25 05:37:56,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... [2020-09-25 05:37:56,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:56,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:56,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:56,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:56,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:58,319 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:58,319 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:58,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:58 BoogieIcfgContainer [2020-09-25 05:37:58,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:58,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:58,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:58,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:58,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:55" (1/3) ... [2020-09-25 05:37:58,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:58, skipping insertion in model container [2020-09-25 05:37:58,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:56" (2/3) ... [2020-09-25 05:37:58,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:58, skipping insertion in model container [2020-09-25 05:37:58,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:58" (3/3) ... [2020-09-25 05:37:58,339 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 05:37:58,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:58,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:58,392 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:58,430 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:58,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:58,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:58,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:58,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:58,431 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:58,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:58,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:58,468 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:37:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 05:37:58,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:58,481 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] [2020-09-25 05:37:58,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:58,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 05:37:58,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:58,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 05:37:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:37:59,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:37:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 05:37:59,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:59,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:37:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:37:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:59,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:59,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:59,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:37:59,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:59,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:59,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:37:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:59,657 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 05:37:59,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 05:37:59,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:59,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:37:59,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455915466] [2020-09-25 05:37:59,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:59,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:59,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:59,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:59,691 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 05:38:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:02,615 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 05:38:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:38:02,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-25 05:38:02,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:02,659 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 05:38:02,659 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 05:38:02,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 05:38:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 05:38:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 05:38:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 05:38:02,814 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 71 [2020-09-25 05:38:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:02,814 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 05:38:02,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 05:38:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 05:38:02,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:02,829 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, 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] [2020-09-25 05:38:02,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:02,829 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:02,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:02,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2032396842, now seen corresponding path program 1 times [2020-09-25 05:38:02,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:02,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020279376] [2020-09-25 05:38:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:02,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:07,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:07,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 05:38:07,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:38:07,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:07,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:38:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:38:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:08,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:08,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:38:08,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:08,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:08,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:38:08,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:38:08,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:08,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:38:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:08,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020279376] [2020-09-25 05:38:08,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:08,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:08,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819559397] [2020-09-25 05:38:08,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:08,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:08,236 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 5 states. [2020-09-25 05:38:09,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:09,889 INFO L93 Difference]: Finished difference Result 1742 states and 2233 transitions. [2020-09-25 05:38:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:09,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 05:38:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:09,901 INFO L225 Difference]: With dead ends: 1742 [2020-09-25 05:38:09,901 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 05:38:09,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:09,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 05:38:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2020-09-25 05:38:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-09-25 05:38:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1292 transitions. [2020-09-25 05:38:09,945 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1292 transitions. Word has length 154 [2020-09-25 05:38:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:09,948 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1292 transitions. [2020-09-25 05:38:09,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1292 transitions. [2020-09-25 05:38:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 05:38:09,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:09,956 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, 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] [2020-09-25 05:38:09,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:09,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 05:38:09,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:09,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930862508] [2020-09-25 05:38:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:15,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 05:38:15,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:15,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:15,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:38:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:15,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:15,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:15,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:15,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:15,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:15,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:38:15,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:15,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:38:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:15,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930862508] [2020-09-25 05:38:15,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:15,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:15,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087188351] [2020-09-25 05:38:15,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:15,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:15,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:15,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:15,314 INFO L87 Difference]: Start difference. First operand 1030 states and 1292 transitions. Second operand 6 states. [2020-09-25 05:38:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:18,100 INFO L93 Difference]: Finished difference Result 2880 states and 3810 transitions. [2020-09-25 05:38:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:18,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 05:38:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:18,117 INFO L225 Difference]: With dead ends: 2880 [2020-09-25 05:38:18,117 INFO L226 Difference]: Without dead ends: 2015 [2020-09-25 05:38:18,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2020-09-25 05:38:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1958. [2020-09-25 05:38:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-09-25 05:38:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2580 transitions. [2020-09-25 05:38:18,201 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2580 transitions. Word has length 160 [2020-09-25 05:38:18,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:18,203 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2580 transitions. [2020-09-25 05:38:18,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2580 transitions. [2020-09-25 05:38:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:38:18,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:18,207 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, 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] [2020-09-25 05:38:18,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:18,207 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash -677190618, now seen corresponding path program 1 times [2020-09-25 05:38:18,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:18,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890184569] [2020-09-25 05:38:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:23,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 05:38:23,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:38:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:38:23,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:23,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:38:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 05:38:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:23,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:23,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:23,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:38:23,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:23,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:38:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:23,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:38:23,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 05:38:23,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:23,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 05:38:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:23,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890184569] [2020-09-25 05:38:23,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:23,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:38:23,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148541889] [2020-09-25 05:38:23,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:23,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:23,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:23,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:23,720 INFO L87 Difference]: Start difference. First operand 1958 states and 2580 transitions. Second operand 8 states. [2020-09-25 05:38:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:26,530 INFO L93 Difference]: Finished difference Result 5671 states and 7978 transitions. [2020-09-25 05:38:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:38:26,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 05:38:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:26,553 INFO L225 Difference]: With dead ends: 5671 [2020-09-25 05:38:26,553 INFO L226 Difference]: Without dead ends: 3878 [2020-09-25 05:38:26,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:38:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2020-09-25 05:38:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3370. [2020-09-25 05:38:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2020-09-25 05:38:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4525 transitions. [2020-09-25 05:38:26,696 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4525 transitions. Word has length 179 [2020-09-25 05:38:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:26,696 INFO L479 AbstractCegarLoop]: Abstraction has 3370 states and 4525 transitions. [2020-09-25 05:38:26,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4525 transitions. [2020-09-25 05:38:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 05:38:26,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:26,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 05:38:26,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:26,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash -772883364, now seen corresponding path program 1 times [2020-09-25 05:38:26,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:26,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647859732] [2020-09-25 05:38:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:30,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:31,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-25 05:38:31,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:38:31,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:38:31,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:31,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:38:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:38:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:31,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:31,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:31,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:31,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:31,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 05:38:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:31,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:38:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:38:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:32,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:38:32,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 05:38:32,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:32,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:38:32,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:32,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647859732] [2020-09-25 05:38:32,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:32,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:32,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229461592] [2020-09-25 05:38:32,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:32,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:32,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:32,256 INFO L87 Difference]: Start difference. First operand 3370 states and 4525 transitions. Second operand 8 states. [2020-09-25 05:38:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:35,167 INFO L93 Difference]: Finished difference Result 7763 states and 10812 transitions. [2020-09-25 05:38:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:38:35,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-09-25 05:38:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:35,190 INFO L225 Difference]: With dead ends: 7763 [2020-09-25 05:38:35,190 INFO L226 Difference]: Without dead ends: 3760 [2020-09-25 05:38:35,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:38:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2020-09-25 05:38:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3348. [2020-09-25 05:38:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3348 states. [2020-09-25 05:38:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 4304 transitions. [2020-09-25 05:38:35,314 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 4304 transitions. Word has length 243 [2020-09-25 05:38:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:35,315 INFO L479 AbstractCegarLoop]: Abstraction has 3348 states and 4304 transitions. [2020-09-25 05:38:35,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 4304 transitions. [2020-09-25 05:38:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 05:38:35,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:35,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:35,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:35,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1172462050, now seen corresponding path program 1 times [2020-09-25 05:38:35,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:35,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925909019] [2020-09-25 05:38:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:40,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 05:38:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:38:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:40,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:38:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:38:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:40,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:38:40,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:40,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 05:38:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:40,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:38:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:38:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:40,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:38:40,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:40,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 05:38:40,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:40,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 05:38:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:40,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925909019] [2020-09-25 05:38:40,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:40,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:40,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681866957] [2020-09-25 05:38:40,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:40,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:40,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:40,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:40,863 INFO L87 Difference]: Start difference. First operand 3348 states and 4304 transitions. Second operand 7 states. [2020-09-25 05:38:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:43,098 INFO L93 Difference]: Finished difference Result 7193 states and 9354 transitions. [2020-09-25 05:38:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:38:43,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-09-25 05:38:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:43,118 INFO L225 Difference]: With dead ends: 7193 [2020-09-25 05:38:43,118 INFO L226 Difference]: Without dead ends: 3842 [2020-09-25 05:38:43,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:38:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2020-09-25 05:38:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3520. [2020-09-25 05:38:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3520 states. [2020-09-25 05:38:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 4469 transitions. [2020-09-25 05:38:43,219 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 4469 transitions. Word has length 279 [2020-09-25 05:38:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:43,219 INFO L479 AbstractCegarLoop]: Abstraction has 3520 states and 4469 transitions. [2020-09-25 05:38:43,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 4469 transitions. [2020-09-25 05:38:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-09-25 05:38:43,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:43,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 05:38:43,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:38:43,227 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:43,227 INFO L82 PathProgramCache]: Analyzing trace with hash -769016548, now seen corresponding path program 1 times [2020-09-25 05:38:43,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:43,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951687460] [2020-09-25 05:38:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking...