/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:18,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:18,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:18,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:18,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:18,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:18,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:18,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:18,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:18,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:18,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:18,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:18,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:18,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:18,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:18,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:18,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:18,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:18,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:18,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:18,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:18,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:18,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:18,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:18,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:18,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:18,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:18,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:18,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:18,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:18,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:18,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:18,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:18,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:18,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:18,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:18,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:18,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:18,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:18,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:18,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:18,901 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 [2020-09-24 18:23:18,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:18,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:18,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:18,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:18,931 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:18,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:18,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:18,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:18,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:18,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:18,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:18,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:18,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:18,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:18,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:18,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:18,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:18,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:18,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:18,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:18,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:18,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:18,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:18,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:18,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:18,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:18,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:18,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:18,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:18,936 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:23:19,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:19,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:19,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:19,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:19,447 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:19,448 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-24 18:23:19,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8db6d380/5d0c96f091944d4bab6ce5f87be52ff6/FLAG088bfcfe4 [2020-09-24 18:23:20,187 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:20,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-24 18:23:20,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8db6d380/5d0c96f091944d4bab6ce5f87be52ff6/FLAG088bfcfe4 [2020-09-24 18:23:20,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8db6d380/5d0c96f091944d4bab6ce5f87be52ff6 [2020-09-24 18:23:20,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:20,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:20,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:20,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:20,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:20,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:20" (1/1) ... [2020-09-24 18:23:20,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:20, skipping insertion in model container [2020-09-24 18:23:20,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:20" (1/1) ... [2020-09-24 18:23:20,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:20,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:21,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:21,059 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:21,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:21,298 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:21,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21 WrapperNode [2020-09-24 18:23:21,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:21,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:21,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:21,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:21,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (1/1) ... [2020-09-24 18:23:21,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (1/1) ... [2020-09-24 18:23:21,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (1/1) ... [2020-09-24 18:23:21,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (1/1) ... [2020-09-24 18:23:21,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (1/1) ... [2020-09-24 18:23:21,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (1/1) ... [2020-09-24 18:23:21,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (1/1) ... [2020-09-24 18:23:21,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:21,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:21,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:21,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:21,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (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 [2020-09-24 18:23:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:22,902 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:22,903 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:22,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:22 BoogieIcfgContainer [2020-09-24 18:23:22,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:22,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:22,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:22,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:22,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:20" (1/3) ... [2020-09-24 18:23:22,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:22, skipping insertion in model container [2020-09-24 18:23:22,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:21" (2/3) ... [2020-09-24 18:23:22,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:22, skipping insertion in model container [2020-09-24 18:23:22,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:22" (3/3) ... [2020-09-24 18:23:22,934 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label50.c [2020-09-24 18:23:22,946 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:22,958 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:22,979 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:23,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:23,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:23,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:23,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:23,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:23,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:23,022 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:23,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 18:23:23,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:23,077 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] [2020-09-24 18:23:23,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:23,086 INFO L82 PathProgramCache]: Analyzing trace with hash -593885342, now seen corresponding path program 1 times [2020-09-24 18:23:23,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:23,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-24 18:23:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:27,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-24 18:23:27,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:23:27,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4366 [2020-09-24 18:23:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:23:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 18:23:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:23:27,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:28,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:28,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:23:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:23:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:28,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-24 18:23:28,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:28,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:28,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626541780] [2020-09-24 18:23:28,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:28,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:28,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:28,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:28,118 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:30,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:30,160 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-24 18:23:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:30,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-24 18:23:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:30,198 INFO L225 Difference]: With dead ends: 1206 [2020-09-24 18:23:30,199 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 18:23:30,210 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 [2020-09-24 18:23:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 18:23:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-24 18:23:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-24 18:23:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-24 18:23:30,323 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 107 [2020-09-24 18:23:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:30,324 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-24 18:23:30,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-24 18:23:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 18:23:30,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:30,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:30,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:30,336 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:30,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:30,336 INFO L82 PathProgramCache]: Analyzing trace with hash -125182521, now seen corresponding path program 1 times [2020-09-24 18:23:30,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:30,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856784898] [2020-09-24 18:23:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:30,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 18:23:32,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:23:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-09-24 18:23:32,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:23:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 18:23:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:32,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:32,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:32,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:32,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:23:32,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:23:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:32,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856784898] [2020-09-24 18:23:32,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:32,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:32,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58703941] [2020-09-24 18:23:32,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:32,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:32,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:32,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:32,944 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-24 18:23:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:34,703 INFO L93 Difference]: Finished difference Result 1540 states and 1960 transitions. [2020-09-24 18:23:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:34,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-24 18:23:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:34,712 INFO L225 Difference]: With dead ends: 1540 [2020-09-24 18:23:34,712 INFO L226 Difference]: Without dead ends: 737 [2020-09-24 18:23:34,716 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 [2020-09-24 18:23:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-24 18:23:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 715. [2020-09-24 18:23:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-09-24 18:23:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 834 transitions. [2020-09-24 18:23:34,775 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 834 transitions. Word has length 141 [2020-09-24 18:23:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:34,776 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 834 transitions. [2020-09-24 18:23:34,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 834 transitions. [2020-09-24 18:23:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:23:34,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:34,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:34,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:34,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:34,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:34,784 INFO L82 PathProgramCache]: Analyzing trace with hash 809468999, now seen corresponding path program 1 times [2020-09-24 18:23:34,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:34,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113645599] [2020-09-24 18:23:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:39,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 18:23:39,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:23:39,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-24 18:23:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 18:23:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:39,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:39,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:39,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:39,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:40,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:23:40,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:23:40,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:23:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:40,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113645599] [2020-09-24 18:23:40,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:40,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:40,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854677800] [2020-09-24 18:23:40,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:40,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:40,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:40,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:40,084 INFO L87 Difference]: Start difference. First operand 715 states and 834 transitions. Second operand 5 states. [2020-09-24 18:23:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:42,001 INFO L93 Difference]: Finished difference Result 1990 states and 2374 transitions. [2020-09-24 18:23:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:42,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 18:23:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:42,009 INFO L225 Difference]: With dead ends: 1990 [2020-09-24 18:23:42,009 INFO L226 Difference]: Without dead ends: 1297 [2020-09-24 18:23:42,012 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 [2020-09-24 18:23:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2020-09-24 18:23:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1250. [2020-09-24 18:23:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-09-24 18:23:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1466 transitions. [2020-09-24 18:23:42,054 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1466 transitions. Word has length 142 [2020-09-24 18:23:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:42,055 INFO L479 AbstractCegarLoop]: Abstraction has 1250 states and 1466 transitions. [2020-09-24 18:23:42,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1466 transitions. [2020-09-24 18:23:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 18:23:42,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:42,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:42,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:42,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:42,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1712229635, now seen corresponding path program 1 times [2020-09-24 18:23:42,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:42,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959900335] [2020-09-24 18:23:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:42,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 18:23:42,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-24 18:23:42,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:23:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:23:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:42,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:42,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:23:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:23:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:42,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:23:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:23:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:23:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:42,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959900335] [2020-09-24 18:23:42,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:42,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:42,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28980364] [2020-09-24 18:23:42,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:42,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:42,782 INFO L87 Difference]: Start difference. First operand 1250 states and 1466 transitions. Second operand 7 states. [2020-09-24 18:23:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:44,872 INFO L93 Difference]: Finished difference Result 3171 states and 3846 transitions. [2020-09-24 18:23:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:44,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-24 18:23:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:44,882 INFO L225 Difference]: With dead ends: 3171 [2020-09-24 18:23:44,883 INFO L226 Difference]: Without dead ends: 1943 [2020-09-24 18:23:44,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:23:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-09-24 18:23:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1892. [2020-09-24 18:23:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2020-09-24 18:23:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2181 transitions. [2020-09-24 18:23:44,968 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2181 transitions. Word has length 145 [2020-09-24 18:23:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:44,968 INFO L479 AbstractCegarLoop]: Abstraction has 1892 states and 2181 transitions. [2020-09-24 18:23:44,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2181 transitions. [2020-09-24 18:23:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 18:23:44,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:44,977 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:44,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:44,978 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:44,978 INFO L82 PathProgramCache]: Analyzing trace with hash -451289247, now seen corresponding path program 1 times [2020-09-24 18:23:44,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:44,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055758398] [2020-09-24 18:23:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:45,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-24 18:23:45,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:23:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-09-24 18:23:45,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:23:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:23:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:45,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:45,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:46,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:46,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:23:46,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:23:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:46,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:23:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:23:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:23:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:46,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055758398] [2020-09-24 18:23:46,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:46,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:46,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577713869] [2020-09-24 18:23:46,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:46,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:46,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:46,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:46,184 INFO L87 Difference]: Start difference. First operand 1892 states and 2181 transitions. Second operand 7 states. [2020-09-24 18:23:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:49,538 INFO L93 Difference]: Finished difference Result 5909 states and 6986 transitions. [2020-09-24 18:23:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:23:49,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-24 18:23:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:49,559 INFO L225 Difference]: With dead ends: 5909 [2020-09-24 18:23:49,559 INFO L226 Difference]: Without dead ends: 3860 [2020-09-24 18:23:49,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2020-09-24 18:23:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3820. [2020-09-24 18:23:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3820 states. [2020-09-24 18:23:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 4433 transitions. [2020-09-24 18:23:49,670 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 4433 transitions. Word has length 167 [2020-09-24 18:23:49,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:49,671 INFO L479 AbstractCegarLoop]: Abstraction has 3820 states and 4433 transitions. [2020-09-24 18:23:49,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 4433 transitions. [2020-09-24 18:23:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-24 18:23:49,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:49,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:49,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:49,683 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:49,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1180407542, now seen corresponding path program 1 times [2020-09-24 18:23:49,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:49,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063049500] [2020-09-24 18:23:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:54,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-24 18:23:54,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:23:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:23:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-24 18:23:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:23:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:54,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:54,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:54,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:54,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:23:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:54,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:54,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:23:54,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:54,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:54,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:54,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:54,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:54,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:23:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 18:23:54,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:23:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:23:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-24 18:23:54,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063049500] [2020-09-24 18:23:54,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:54,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:23:54,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747557490] [2020-09-24 18:23:54,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:54,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:54,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:54,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:54,996 INFO L87 Difference]: Start difference. First operand 3820 states and 4433 transitions. Second operand 5 states. [2020-09-24 18:23:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:56,647 INFO L93 Difference]: Finished difference Result 8144 states and 9475 transitions. [2020-09-24 18:23:56,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:56,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-09-24 18:23:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:56,667 INFO L225 Difference]: With dead ends: 8144 [2020-09-24 18:23:56,667 INFO L226 Difference]: Without dead ends: 4171 [2020-09-24 18:23:56,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2020-09-24 18:23:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4167. [2020-09-24 18:23:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-09-24 18:23:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 4718 transitions. [2020-09-24 18:23:56,776 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 4718 transitions. Word has length 202 [2020-09-24 18:23:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:56,777 INFO L479 AbstractCegarLoop]: Abstraction has 4167 states and 4718 transitions. [2020-09-24 18:23:56,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 4718 transitions. [2020-09-24 18:23:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 18:23:56,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:56,788 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-09-24 18:23:56,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:23:56,789 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash 76072862, now seen corresponding path program 1 times [2020-09-24 18:23:56,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:56,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111208957] [2020-09-24 18:23:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:56,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:01,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-24 18:24:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:24:01,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:24:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:24:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:01,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:01,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:01,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:01,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:24:01,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:24:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:24:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:02,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:02,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:24:02,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:02,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 18:24:02,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:02,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:24:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:02,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:24:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:02,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:24:02,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:24:02,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 18:24:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:02,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-24 18:24:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:02,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:02,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:24:02,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:02,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:24:02,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:02,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:02,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:24:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 93 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 18:24:02,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111208957] [2020-09-24 18:24:02,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:02,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:02,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56718541] [2020-09-24 18:24:02,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:02,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:02,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:02,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:02,168 INFO L87 Difference]: Start difference. First operand 4167 states and 4718 transitions. Second operand 7 states. [2020-09-24 18:24:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:04,415 INFO L93 Difference]: Finished difference Result 9568 states and 11009 transitions. [2020-09-24 18:24:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:04,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-24 18:24:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:04,438 INFO L225 Difference]: With dead ends: 9568 [2020-09-24 18:24:04,439 INFO L226 Difference]: Without dead ends: 5433 [2020-09-24 18:24:04,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2020-09-24 18:24:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5261. [2020-09-24 18:24:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5261 states. [2020-09-24 18:24:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 5924 transitions. [2020-09-24 18:24:04,576 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 5924 transitions. Word has length 206 [2020-09-24 18:24:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:04,577 INFO L479 AbstractCegarLoop]: Abstraction has 5261 states and 5924 transitions. [2020-09-24 18:24:04,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 5924 transitions. [2020-09-24 18:24:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 18:24:04,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:04,589 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, 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] [2020-09-24 18:24:04,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:24:04,590 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1219149427, now seen corresponding path program 1 times [2020-09-24 18:24:04,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:04,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555154587] [2020-09-24 18:24:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:05,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-24 18:24:05,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:05,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-24 18:24:05,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 18:24:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:24:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:05,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:05,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:05,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:05,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:05,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:05,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:05,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:05,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:05,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:24:05,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 18:24:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 18:24:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 18:24:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:24:05,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 18:24:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:24:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:05,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555154587] [2020-09-24 18:24:05,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:05,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:05,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119269310] [2020-09-24 18:24:05,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:05,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:05,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:05,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:05,379 INFO L87 Difference]: Start difference. First operand 5261 states and 5924 transitions. Second operand 7 states. [2020-09-24 18:24:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:07,564 INFO L93 Difference]: Finished difference Result 10510 states and 11988 transitions. [2020-09-24 18:24:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:07,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-09-24 18:24:07,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:07,588 INFO L225 Difference]: With dead ends: 10510 [2020-09-24 18:24:07,588 INFO L226 Difference]: Without dead ends: 5281 [2020-09-24 18:24:07,602 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 [2020-09-24 18:24:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2020-09-24 18:24:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5275. [2020-09-24 18:24:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5275 states. [2020-09-24 18:24:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 5786 transitions. [2020-09-24 18:24:07,711 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 5786 transitions. Word has length 204 [2020-09-24 18:24:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:07,711 INFO L479 AbstractCegarLoop]: Abstraction has 5275 states and 5786 transitions. [2020-09-24 18:24:07,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 5786 transitions. [2020-09-24 18:24:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 18:24:07,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:07,726 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:07,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:24:07,726 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:07,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1217921601, now seen corresponding path program 1 times [2020-09-24 18:24:07,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:07,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976234585] [2020-09-24 18:24:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking...