/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:38:34,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:38:34,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:38:34,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:38:34,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:38:34,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:38:34,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:38:34,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:38:34,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:38:34,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:38:34,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:38:34,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:38:34,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:38:34,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:38:34,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:38:34,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:38:34,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:38:34,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:38:34,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:38:34,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:38:34,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:38:34,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:38:34,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:38:34,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:38:34,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:38:34,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:38:34,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:38:34,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:38:34,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:38:34,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:38:34,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:38:34,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:38:34,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:38:34,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:38:34,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:38:34,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:38:34,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:38:34,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:38:34,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:38:34,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:38:34,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:38:34,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:38:34,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:38:34,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:38:34,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:38:34,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:38:34,592 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:38:34,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:38:34,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:38:34,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:38:34,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:38:34,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:38:34,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:38:34,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:38:34,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:38:34,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:38:34,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:38:34,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:38:34,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:38:34,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:38:34,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:38:34,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:38:34,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:38:34,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:38:34,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:38:34,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:38:34,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:38:34,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:38:34,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:38:34,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:38:34,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:38:34,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:38:35,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:38:35,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:38:35,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:38:35,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:38:35,111 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:38:35,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product19.cil.c [2020-09-25 07:38:35,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79e93bd35/9a1a2c63b346407cbb3b2ddaece94076/FLAG58bb68cc6 [2020-09-25 07:38:35,794 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:38:35,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product19.cil.c [2020-09-25 07:38:35,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79e93bd35/9a1a2c63b346407cbb3b2ddaece94076/FLAG58bb68cc6 [2020-09-25 07:38:36,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79e93bd35/9a1a2c63b346407cbb3b2ddaece94076 [2020-09-25 07:38:36,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:38:36,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:38:36,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:38:36,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:38:36,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:38:36,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecced43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36, skipping insertion in model container [2020-09-25 07:38:36,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:38:36,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:38:36,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:38:36,542 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:38:36,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:38:36,785 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:38:36,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36 WrapperNode [2020-09-25 07:38:36,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:38:36,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:38:36,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:38:36,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:38:36,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... [2020-09-25 07:38:36,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:38:36,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:38:36,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:38:36,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:38:36,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:38:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:38:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:38:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 07:38:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 07:38:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 07:38:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 07:38:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 07:38:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 07:38:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 07:38:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 07:38:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 07:38:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 07:38:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 07:38:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 07:38:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 07:38:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 07:38:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 07:38:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 07:38:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 07:38:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 07:38:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 07:38:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 07:38:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 07:38:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 07:38:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 07:38:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 07:38:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 07:38:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 07:38:36,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 07:38:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 07:38:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 07:38:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 07:38:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-25 07:38:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-25 07:38:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-25 07:38:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 07:38:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 07:38:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 07:38:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 07:38:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:38:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:38:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:38:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 07:38:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 07:38:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 07:38:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 07:38:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 07:38:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 07:38:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 07:38:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 07:38:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 07:38:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 07:38:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 07:38:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 07:38:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 07:38:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 07:38:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 07:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-25 07:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-25 07:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 07:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 07:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 07:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 07:38:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:38:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 07:38:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 07:38:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:38:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:38:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 07:38:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:38:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:38:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:38:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:38:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 07:38:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:38:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 07:38:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 07:38:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:38:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 07:38:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 07:38:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 07:38:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 07:38:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 07:38:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 07:38:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 07:38:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 07:38:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-25 07:38:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 07:38:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 07:38:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 07:38:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:38:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:38:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 07:38:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:38:38,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:38:38,083 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 07:38:38,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:38:38 BoogieIcfgContainer [2020-09-25 07:38:38,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:38:38,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:38:38,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:38:38,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:38:38,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:38:36" (1/3) ... [2020-09-25 07:38:38,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdaa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:38:38, skipping insertion in model container [2020-09-25 07:38:38,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:38:36" (2/3) ... [2020-09-25 07:38:38,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdaa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:38:38, skipping insertion in model container [2020-09-25 07:38:38,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:38:38" (3/3) ... [2020-09-25 07:38:38,101 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product19.cil.c [2020-09-25 07:38:38,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:38:38,125 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:38:38,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:38:38,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:38:38,185 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:38:38,185 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:38:38,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:38:38,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:38:38,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:38:38,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:38:38,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:38:38,218 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states. [2020-09-25 07:38:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:38:38,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:38:38,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:38:38,239 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:38:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:38:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 533033246, now seen corresponding path program 1 times [2020-09-25 07:38:38,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:38:38,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245943620] [2020-09-25 07:38:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:38:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:43,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 07:38:43,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:38:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 07:38:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:43,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 07:38:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:43,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:38:44,251 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:38:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:38:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:38:44,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 07:38:44,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:38:44,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:38:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:44,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:38:44,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:38:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 07:38:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:44,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:38:44,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:38:44,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 07:38:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:44,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:38:44,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:38:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:38:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:44,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:44,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 07:38:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:38:44,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:44,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:44,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 07:38:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:38:44,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:38:44,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:38:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:38:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:38:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:44,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:44,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:38:44,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 07:38:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:44,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:44,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:38:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 07:38:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:44,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:44,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:44,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:44,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:44,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:44,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:38:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 07:38:44,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245943620] [2020-09-25 07:38:44,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:38:44,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:38:44,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44926786] [2020-09-25 07:38:44,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:38:44,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:38:44,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:38:44,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:38:44,716 INFO L87 Difference]: Start difference. First operand 294 states. Second operand 4 states. [2020-09-25 07:38:46,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:38:46,058 INFO L93 Difference]: Finished difference Result 446 states and 527 transitions. [2020-09-25 07:38:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:38:46,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 07:38:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:38:46,091 INFO L225 Difference]: With dead ends: 446 [2020-09-25 07:38:46,091 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 07:38:46,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:38:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 07:38:46,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 243. [2020-09-25 07:38:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 07:38:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 264 transitions. [2020-09-25 07:38:46,242 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 264 transitions. Word has length 160 [2020-09-25 07:38:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:38:46,244 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 264 transitions. [2020-09-25 07:38:46,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:38:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 264 transitions. [2020-09-25 07:38:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 07:38:46,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:38:46,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:38:46,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:38:46,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:38:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:38:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash -536188281, now seen corresponding path program 1 times [2020-09-25 07:38:46,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:38:46,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844325187] [2020-09-25 07:38:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:38:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 07:38:51,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:38:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 07:38:51,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 07:38:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:38:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,712 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:38:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:38:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:38:51,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 07:38:51,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:38:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:51,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 07:38:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:51,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:51,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 07:38:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:51,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:38:51,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:38:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:51,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:38:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 07:38:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:38:51,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:51,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:51,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 07:38:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:38:51,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:51,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:38:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:38:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:51,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:51,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 07:38:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:51,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:51,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:38:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:51,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 07:38:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:51,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:51,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:51,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:51,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:51,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:38:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:51,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 07:38:52,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844325187] [2020-09-25 07:38:52,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:38:52,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:38:52,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269755129] [2020-09-25 07:38:52,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:38:52,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:38:52,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:38:52,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:38:52,011 INFO L87 Difference]: Start difference. First operand 243 states and 264 transitions. Second operand 5 states. [2020-09-25 07:38:52,662 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:38:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:38:53,462 INFO L93 Difference]: Finished difference Result 369 states and 415 transitions. [2020-09-25 07:38:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:38:53,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 07:38:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:38:53,467 INFO L225 Difference]: With dead ends: 369 [2020-09-25 07:38:53,468 INFO L226 Difference]: Without dead ends: 277 [2020-09-25 07:38:53,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:38:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-25 07:38:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 233. [2020-09-25 07:38:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-25 07:38:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2020-09-25 07:38:53,544 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 161 [2020-09-25 07:38:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:38:53,545 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2020-09-25 07:38:53,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:38:53,545 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2020-09-25 07:38:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 07:38:53,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:38:53,548 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:38:53,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:38:53,549 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:38:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:38:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1352646037, now seen corresponding path program 1 times [2020-09-25 07:38:53,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:38:53,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957091267] [2020-09-25 07:38:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:38:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 07:38:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:38:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 07:38:58,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:58,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:38:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 07:38:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:38:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:38:59,016 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:38:59,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:38:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:38:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 07:38:59,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:38:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:38:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:38:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:38:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 07:38:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:59,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:59,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:38:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 07:38:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:38:59,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:38:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:38:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:38:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:38:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:38:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 07:38:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:38:59,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:38:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:38:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:38:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 07:38:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:38:59,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:38:59,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:38:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:38:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:38:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:38:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:59,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:38:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:59,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 07:38:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:59,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:38:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:38:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-25 07:38:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:38:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:38:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:38:59,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:38:59,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:38:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:38:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:38:59,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:38:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:38:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:38:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:38:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:38:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 07:38:59,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957091267] [2020-09-25 07:38:59,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:38:59,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:38:59,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777296344] [2020-09-25 07:38:59,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:38:59,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:38:59,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:38:59,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:38:59,462 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand 5 states. [2020-09-25 07:39:00,187 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 07:39:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:39:01,700 INFO L93 Difference]: Finished difference Result 519 states and 593 transitions. [2020-09-25 07:39:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:39:01,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 07:39:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:39:01,710 INFO L225 Difference]: With dead ends: 519 [2020-09-25 07:39:01,711 INFO L226 Difference]: Without dead ends: 401 [2020-09-25 07:39:01,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:39:01,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-09-25 07:39:01,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 345. [2020-09-25 07:39:01,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-25 07:39:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 382 transitions. [2020-09-25 07:39:01,818 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 382 transitions. Word has length 170 [2020-09-25 07:39:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:39:01,818 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 382 transitions. [2020-09-25 07:39:01,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:39:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 382 transitions. [2020-09-25 07:39:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 07:39:01,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:39:01,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:39:01,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:39:01,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:39:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:39:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1183570364, now seen corresponding path program 1 times [2020-09-25 07:39:01,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:39:01,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936520919] [2020-09-25 07:39:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:39:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:05,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:06,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:06,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 07:39:06,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:39:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:39:06,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:06,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:39:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 07:39:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:39:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:39:07,266 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:39:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:39:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:39:07,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 07:39:07,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:39:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:39:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:39:07,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:39:07,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 07:39:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:39:07,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:39:07,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 07:39:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:39:07,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:39:07,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:39:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:39:07,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:39:07,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 07:39:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:39:07,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:39:07,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 07:39:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:39:07,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:39:07,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:39:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:39:07,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:39:07,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:39:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:39:07,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 07:39:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:39:07,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:39:07,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:39:07,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:39:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:39:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:39:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:39:07,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:39:07,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:39:07,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:39:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:39:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 07:39:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:39:07,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:39:07,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:39:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:39:07,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:39:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-25 07:39:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:39:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:39:07,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:39:07,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:39:07,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:39:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:39:07,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:39:07,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:39:07,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:39:07,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:39:07,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:39:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:39:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:39:07,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936520919] [2020-09-25 07:39:07,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:39:07,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 07:39:07,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89729839] [2020-09-25 07:39:07,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:39:07,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:39:07,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:39:07,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:39:07,596 INFO L87 Difference]: Start difference. First operand 345 states and 382 transitions. Second operand 10 states. [2020-09-25 07:39:08,226 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:09,242 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:09,580 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 07:39:10,482 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 07:39:10,827 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-25 07:39:11,132 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 07:39:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:39:11,184 INFO L93 Difference]: Finished difference Result 546 states and 638 transitions. [2020-09-25 07:39:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:39:11,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 178 [2020-09-25 07:39:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:39:11,186 INFO L225 Difference]: With dead ends: 546 [2020-09-25 07:39:11,186 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:39:11,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:39:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:39:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:39:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:39:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:39:11,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-09-25 07:39:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:39:11,192 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:39:11,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:39:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:39:11,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:39:11,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:39:11,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 07:39:11,430 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:11,600 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:11,774 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:11,963 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:12,124 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:12,293 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:12,458 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:12,625 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:12,789 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:12,964 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:13,127 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:13,251 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 9 [2020-09-25 07:39:13,412 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:13,576 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:13,736 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 9 [2020-09-25 07:39:13,887 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:39:14,066 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:14,224 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:14,379 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:14,541 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:14,699 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:14,863 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:15,016 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:15,175 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:15,333 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:15,487 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:15,642 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:15,802 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:15,959 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:16,115 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:16,274 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:16,432 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:16,592 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:16,750 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:16,912 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:17,066 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:17,227 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:17,384 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:17,538 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:17,696 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:17,878 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:18,038 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:18,201 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:18,358 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:18,516 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:18,676 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:18,828 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:18,934 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 9 [2020-09-25 07:39:19,091 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:19,260 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 07:39:19,418 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:19,577 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:19,735 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 07:39:19,839 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 9 [2020-09-25 07:39:19,959 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 9 [2020-09-25 07:39:20,376 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 9 [2020-09-25 07:39:20,615 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 07:39:20,841 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 1 [2020-09-25 07:39:21,049 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 1 [2020-09-25 07:39:21,254 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 1 [2020-09-25 07:39:21,486 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 07:39:21,748 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 1 [2020-09-25 07:39:22,049 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:39:22,490 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 16 [2020-09-25 07:39:22,685 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 1 [2020-09-25 07:39:22,852 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 1 [2020-09-25 07:39:23,209 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 10 [2020-09-25 07:39:23,438 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 07:39:23,689 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 07:39:24,110 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 10 [2020-09-25 07:39:24,521 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 10 [2020-09-25 07:39:24,778 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25