/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:24:06,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:24:06,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:24:06,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:24:06,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:24:06,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:24:06,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:24:06,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:24:06,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:24:06,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:24:06,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:24:06,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:24:06,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:24:06,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:24:06,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:24:06,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:24:06,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:24:06,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:24:06,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:24:06,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:24:06,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:24:06,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:24:06,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:24:06,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:24:06,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:24:06,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:24:06,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:24:06,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:24:06,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:24:06,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:24:06,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:24:06,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:24:06,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:24:06,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:24:06,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:24:06,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:24:06,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:24:06,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:24:06,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:24:06,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:24:06,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:24:06,847 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 [2020-10-27 01:24:06,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:24:06,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:24:06,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:24:06,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:24:06,889 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:24:06,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:24:06,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:24:06,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:24:06,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:24:06,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:24:06,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:24:06,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:24:06,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:24:06,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:24:06,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:24:06,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:24:06,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:24:06,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:24:06,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:24:06,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:24:06,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:24:06,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:24:06,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:24:06,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:24:06,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:24:06,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:24:06,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:24:06,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:24:06,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:24:06,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:24:07,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:24:07,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:24:07,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:24:07,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:24:07,384 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:24:07,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-27 01:24:07,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af3b0318/1c054016bbd24605967ff6f54e451fc3/FLAG854d6f1e2 [2020-10-27 01:24:08,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:24:08,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-27 01:24:08,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af3b0318/1c054016bbd24605967ff6f54e451fc3/FLAG854d6f1e2 [2020-10-27 01:24:08,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af3b0318/1c054016bbd24605967ff6f54e451fc3 [2020-10-27 01:24:08,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:24:08,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:24:08,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:24:08,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:24:08,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:24:08,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:24:08" (1/1) ... [2020-10-27 01:24:08,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cae07a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:08, skipping insertion in model container [2020-10-27 01:24:08,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:24:08" (1/1) ... [2020-10-27 01:24:08,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:24:08,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:24:09,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:24:09,230 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:24:09,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:24:09,413 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:24:09,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09 WrapperNode [2020-10-27 01:24:09,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:24:09,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:24:09,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:24:09,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:24:09,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (1/1) ... [2020-10-27 01:24:09,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (1/1) ... [2020-10-27 01:24:09,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (1/1) ... [2020-10-27 01:24:09,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (1/1) ... [2020-10-27 01:24:09,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (1/1) ... [2020-10-27 01:24:09,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (1/1) ... [2020-10-27 01:24:09,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (1/1) ... [2020-10-27 01:24:09,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:24:09,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:24:09,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:24:09,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:24:09,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (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 [2020-10-27 01:24:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:24:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:24:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:24:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:24:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:24:09,574 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:24:09,574 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 01:24:09,574 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-27 01:24:09,574 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-27 01:24:09,574 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2020-10-27 01:24:09,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:24:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:24:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:24:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:24:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:24:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:24:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:24:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:24:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:24:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:24:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:24:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:24:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:24:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:24:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:24:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:24:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:24:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:24:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:24:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:24:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:24:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:24:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:24:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:24:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:24:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:24:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:24:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:24:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:24:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:24:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:24:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:24:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:24:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:24:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:24:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:24:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:24:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:24:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:24:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:24:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:24:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:24:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:24:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:24:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:24:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:24:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:24:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:24:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:24:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:24:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:24:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:24:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:24:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:24:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:24:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:24:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:24:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:24:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:24:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:24:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:24:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:24:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:24:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:24:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:24:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:24:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:24:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:24:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:24:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:24:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:24:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:24:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:24:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:24:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:24:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:24:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:24:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:24:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:24:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:24:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:24:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:24:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:24:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:24:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:24:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:24:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:24:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:24:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:24:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:24:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:24:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:24:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:24:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:24:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:24:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:24:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:24:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:24:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:24:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:24:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:24:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:24:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:24:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:24:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:24:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:24:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:24:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:24:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:24:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:24:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:24:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:24:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 01:24:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:24:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:24:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:24:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-27 01:24:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-27 01:24:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:24:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:24:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2020-10-27 01:24:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:24:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:24:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:24:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:24:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:24:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:24:09,937 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:24:10,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:24:10,239 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 01:24:10,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:24:10 BoogieIcfgContainer [2020-10-27 01:24:10,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:24:10,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:24:10,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:24:10,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:24:10,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:24:08" (1/3) ... [2020-10-27 01:24:10,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bc6b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:24:10, skipping insertion in model container [2020-10-27 01:24:10,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:09" (2/3) ... [2020-10-27 01:24:10,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bc6b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:24:10, skipping insertion in model container [2020-10-27 01:24:10,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:24:10" (3/3) ... [2020-10-27 01:24:10,251 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2020-10-27 01:24:10,264 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:24:10,269 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:24:10,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:24:10,316 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:24:10,316 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:24:10,317 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:24:10,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:24:10,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:24:10,317 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:24:10,317 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:24:10,317 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:24:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-27 01:24:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:24:10,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:10,348 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] [2020-10-27 01:24:10,348 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1102594133, now seen corresponding path program 1 times [2020-10-27 01:24:10,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:10,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004005067] [2020-10-27 01:24:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 01:24:15,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:24:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4647 [2020-10-27 01:24:15,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:24:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:24:15,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:15,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:24:15,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:24:15,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 01:24:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:24:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:24:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:15,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:24:15,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:24:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:24:15,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:24:15,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:24:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:24:15,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:24:15,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004005067] [2020-10-27 01:24:15,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:24:15,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:24:15,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113100751] [2020-10-27 01:24:15,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:24:15,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:15,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:24:15,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:24:15,612 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 7 states. [2020-10-27 01:24:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:15,983 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2020-10-27 01:24:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:24:15,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-27 01:24:15,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:15,994 INFO L225 Difference]: With dead ends: 120 [2020-10-27 01:24:15,995 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 01:24:15,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:24:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 01:24:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 01:24:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 01:24:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-27 01:24:16,052 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 39 [2020-10-27 01:24:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:16,053 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-27 01:24:16,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:24:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-27 01:24:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 01:24:16,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:16,056 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:16,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:24:16,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:16,058 INFO L82 PathProgramCache]: Analyzing trace with hash 760087732, now seen corresponding path program 1 times [2020-10-27 01:24:16,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:16,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855969991] [2020-10-27 01:24:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 01:24:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 01:24:21,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:24:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 01:24:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:21,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:24:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:21,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:21,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 01:24:21,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:24:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:21,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:21,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:24:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 01:24:21,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:24:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:24:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:22,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:22,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:22,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:24:22,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:24:22,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855969991] [2020-10-27 01:24:22,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:22,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:24:22,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686759166] [2020-10-27 01:24:22,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:24:22,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:22,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:24:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:24:22,197 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 18 states. [2020-10-27 01:24:23,305 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-27 01:24:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:23,601 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-27 01:24:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:24:23,602 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-27 01:24:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:23,604 INFO L225 Difference]: With dead ends: 63 [2020-10-27 01:24:23,604 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 01:24:23,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:24:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 01:24:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 01:24:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 01:24:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-27 01:24:23,616 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 48 [2020-10-27 01:24:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:23,616 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-27 01:24:23,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:24:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-27 01:24:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 01:24:23,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:23,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:23,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:24:23,619 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1186636108, now seen corresponding path program 1 times [2020-10-27 01:24:23,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:23,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289230699] [2020-10-27 01:24:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:24,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:28,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:28,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 01:24:28,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:24:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 01:24:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 01:24:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:28,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:28,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:28,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:28,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:24:28,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 01:24:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:29,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:29,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:24:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:29,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:29,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:29,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:29,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:24:29,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:29,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:24:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:29,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 01:24:29,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:24:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:24:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:30,000 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-27 01:24:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:30,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 01:24:30,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:24:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:30,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289230699] [2020-10-27 01:24:30,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:30,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 01:24:30,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285759436] [2020-10-27 01:24:30,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 01:24:30,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:30,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 01:24:30,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:24:30,283 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 22 states. [2020-10-27 01:24:31,249 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-27 01:24:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:31,650 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2020-10-27 01:24:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:24:31,651 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-27 01:24:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:31,656 INFO L225 Difference]: With dead ends: 74 [2020-10-27 01:24:31,656 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 01:24:31,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2020-10-27 01:24:31,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 01:24:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2020-10-27 01:24:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 01:24:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-27 01:24:31,688 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2020-10-27 01:24:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:31,689 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-27 01:24:31,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 01:24:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-27 01:24:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 01:24:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:31,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:24:31,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:24:31,694 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash -183067321, now seen corresponding path program 1 times [2020-10-27 01:24:31,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:31,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861531361] [2020-10-27 01:24:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:36,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:24:36,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 01:24:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 01:24:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 01:24:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:37,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:37,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:37,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:37,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:24:37,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:37,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:38,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:38,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-27 01:24:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:24:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:24:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:38,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:38,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:38,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:24:38,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:38,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:38,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:38,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:38,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 01:24:38,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:24:38,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:38,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:38,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:24:38,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 01:24:38,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:24:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:24:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:39,446 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-27 01:24:39,845 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-10-27 01:24:40,318 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2020-10-27 01:24:40,811 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2020-10-27 01:24:41,339 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2020-10-27 01:24:42,360 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-10-27 01:24:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:42,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:42,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:42,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 01:24:42,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:24:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:42,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:43,026 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-27 01:24:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:24:43,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861531361] [2020-10-27 01:24:43,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:43,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 01:24:43,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702027936] [2020-10-27 01:24:43,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 01:24:43,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:43,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 01:24:43,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:24:43,068 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 26 states. [2020-10-27 01:24:45,225 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2020-10-27 01:24:45,800 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2020-10-27 01:24:46,327 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-10-27 01:24:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:47,282 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2020-10-27 01:24:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:24:47,283 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 53 [2020-10-27 01:24:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:47,285 INFO L225 Difference]: With dead ends: 81 [2020-10-27 01:24:47,285 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 01:24:47,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=130, Invalid=1430, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 01:24:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 01:24:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-27 01:24:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 01:24:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2020-10-27 01:24:47,305 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 53 [2020-10-27 01:24:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:47,305 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2020-10-27 01:24:47,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 01:24:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2020-10-27 01:24:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 01:24:47,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:47,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:24:47,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:24:47,308 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash -58635417, now seen corresponding path program 1 times [2020-10-27 01:24:47,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:47,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569095931] [2020-10-27 01:24:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:52,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:52,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:24:52,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:24:52,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:24:52,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 01:24:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 01:24:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:52,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:52,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:52,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:52,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:24:52,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:52,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:52,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:52,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 01:24:52,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:24:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:53,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:53,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:53,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:53,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:24:53,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:53,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:53,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:53,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:53,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:53,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:53,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:53,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:24:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:24:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:53,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:24:53,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 01:24:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:24:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:24:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:54,745 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-27 01:24:54,973 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-27 01:24:55,493 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-10-27 01:25:02,457 WARN L193 SmtUtils]: Spent 6.42 s on a formula simplification. DAG size of input: 336 DAG size of output: 322 [2020-10-27 01:25:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:02,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:02,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:02,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 01:25:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:02,858 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-27 01:25:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:25:02,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569095931] [2020-10-27 01:25:02,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:25:02,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 01:25:02,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71822485] [2020-10-27 01:25:02,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:25:02,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:25:02,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:25:02,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:25:02,909 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 27 states. [2020-10-27 01:25:10,917 WARN L193 SmtUtils]: Spent 7.45 s on a formula simplification. DAG size of input: 329 DAG size of output: 329 [2020-10-27 01:25:11,404 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-27 01:25:18,575 WARN L193 SmtUtils]: Spent 6.82 s on a formula simplification. DAG size of input: 329 DAG size of output: 329 [2020-10-27 01:25:26,275 WARN L193 SmtUtils]: Spent 7.29 s on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2020-10-27 01:25:27,523 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-27 01:25:27,863 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 01:25:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:25:29,385 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2020-10-27 01:25:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:25:29,387 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 53 [2020-10-27 01:25:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:25:29,389 INFO L225 Difference]: With dead ends: 97 [2020-10-27 01:25:29,389 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 01:25:29,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:25:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 01:25:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2020-10-27 01:25:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:25:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2020-10-27 01:25:29,410 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 53 [2020-10-27 01:25:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:25:29,410 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2020-10-27 01:25:29,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:25:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2020-10-27 01:25:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 01:25:29,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:25:29,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:25:29,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:25:29,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:25:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:25:29,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1406872738, now seen corresponding path program 1 times [2020-10-27 01:25:29,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:25:29,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372296623] [2020-10-27 01:25:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:25:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:34,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:34,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:25:34,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:25:34,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 01:25:34,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:25:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:34,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 01:25:34,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:34,781 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-10-27 01:25:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:35,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:35,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:35,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:25:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:35,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:35,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:25:35,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 01:25:35,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:25:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:25:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:35,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:35,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:35,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:35,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:25:35,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:25:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:25:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:35,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:25:35,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:25:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:36,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:25:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:36,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:36,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:25:36,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:36,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 01:25:36,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:25:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:25:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:36,931 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 01:25:37,243 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 01:25:37,689 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-27 01:25:40,864 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 217 DAG size of output: 199 [2020-10-27 01:25:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:41,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:41,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:41,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:41,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 01:25:41,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:25:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:42,273 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2020-10-27 01:25:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:25:42,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372296623] [2020-10-27 01:25:42,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:25:42,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 01:25:42,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952042653] [2020-10-27 01:25:42,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 01:25:42,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:25:42,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 01:25:42,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:25:42,323 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand 30 states. [2020-10-27 01:25:43,312 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-27 01:25:44,948 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-10-27 01:25:45,449 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-10-27 01:25:46,185 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-27 01:25:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:25:48,392 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2020-10-27 01:25:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 01:25:48,394 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-10-27 01:25:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:25:48,398 INFO L225 Difference]: With dead ends: 95 [2020-10-27 01:25:48,398 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 01:25:48,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 01:25:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 01:25:48,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2020-10-27 01:25:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 01:25:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2020-10-27 01:25:48,420 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 55 [2020-10-27 01:25:48,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:25:48,421 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2020-10-27 01:25:48,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 01:25:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2020-10-27 01:25:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 01:25:48,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:25:48,423 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-27 01:25:48,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:25:48,423 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:25:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:25:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1531304642, now seen corresponding path program 2 times [2020-10-27 01:25:48,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:25:48,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376394786] [2020-10-27 01:25:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:25:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:53,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:53,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:25:53,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:25:53,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 01:25:53,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 01:25:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:53,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 01:25:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:53,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:53,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:53,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:25:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:53,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:53,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:25:53,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 01:25:53,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:25:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:25:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:54,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:54,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:54,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:54,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:25:54,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:25:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:25:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:54,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:54,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:54,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:25:54,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:54,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:25:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:55,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:55,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:25:55,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:25:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-27 01:25:55,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:25:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:25:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:56,160 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-27 01:25:56,388 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-27 01:25:56,754 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-27 01:25:57,180 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-27 01:25:57,690 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-10-27 01:25:58,336 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2020-10-27 01:25:58,908 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2020-10-27 01:26:05,832 WARN L193 SmtUtils]: Spent 6.11 s on a formula simplification. DAG size of input: 281 DAG size of output: 216 [2020-10-27 01:26:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:07,048 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-27 01:26:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:26:07,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376394786] [2020-10-27 01:26:07,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:26:07,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 01:26:07,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140440097] [2020-10-27 01:26:07,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 01:26:07,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:26:07,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 01:26:07,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:26:07,091 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand 30 states. [2020-10-27 01:26:10,537 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 01:26:14,780 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 01:26:18,640 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 01:26:22,468 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-27 01:26:22,894 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-27 01:26:23,594 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-27 01:26:24,452 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-10-27 01:26:25,150 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-10-27 01:26:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:26:27,024 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2020-10-27 01:26:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:26:27,028 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-10-27 01:26:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:26:27,030 INFO L225 Difference]: With dead ends: 107 [2020-10-27 01:26:27,030 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 01:26:27,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=165, Invalid=1997, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 01:26:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 01:26:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2020-10-27 01:26:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 01:26:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-10-27 01:26:27,070 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 55 [2020-10-27 01:26:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:26:27,071 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-10-27 01:26:27,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 01:26:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-10-27 01:26:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 01:26:27,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:26:27,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:26:27,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:26:27,075 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:26:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:26:27,075 INFO L82 PathProgramCache]: Analyzing trace with hash 499805189, now seen corresponding path program 1 times [2020-10-27 01:26:27,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:26:27,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174915554] [2020-10-27 01:26:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:26:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:28,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:31,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:31,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:32,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:32,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 01:26:32,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:26:32,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 01:26:32,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 01:26:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:26:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:26:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:26:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:32,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:32,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:32,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:26:32,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:32,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:26:32,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:26:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:26:32,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:32,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:26:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:32,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:32,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:26:32,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 01:26:32,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:26:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:26:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:32,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:32,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:32,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:26:32,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:26:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:26:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:26:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:26:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:32,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:32,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:26:32,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 01:26:32,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:26:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:26:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:33,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:33,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:33,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:26:33,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:26:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:33,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:33,629 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-10-27 01:26:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:26:33,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174915554] [2020-10-27 01:26:33,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:26:33,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:26:33,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658757610] [2020-10-27 01:26:33,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:26:33,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:26:33,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:26:33,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:26:33,644 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 23 states. [2020-10-27 01:26:35,269 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-27 01:26:35,610 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-27 01:26:35,948 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-27 01:26:36,297 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-27 01:26:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:26:36,709 INFO L93 Difference]: Finished difference Result 97 states and 118 transitions. [2020-10-27 01:26:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:26:36,714 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2020-10-27 01:26:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:26:36,715 INFO L225 Difference]: With dead ends: 97 [2020-10-27 01:26:36,715 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 01:26:36,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 01:26:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 01:26:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-27 01:26:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 01:26:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2020-10-27 01:26:36,733 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 56 [2020-10-27 01:26:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:26:36,733 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2020-10-27 01:26:36,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:26:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2020-10-27 01:26:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 01:26:36,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:26:36,735 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:26:36,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:26:36,736 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:26:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:26:36,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2083659057, now seen corresponding path program 2 times [2020-10-27 01:26:36,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:26:36,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251720736] [2020-10-27 01:26:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:26:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:41,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:41,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 01:26:41,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:26:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:26:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 01:26:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:26:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 01:26:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:42,132 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2020-10-27 01:26:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:26:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:42,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:42,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:26:42,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:42,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:26:42,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:26:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:26:42,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:26:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:42,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:42,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:26:42,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:42,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 01:26:42,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:26:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 01:26:42,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:43,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:43,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:43,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:26:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:26:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:26:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:26:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:43,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:43,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:43,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:43,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:26:43,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:26:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:26:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:43,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:43,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:43,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:26:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:26:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:26:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:44,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:44,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:26:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:45,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:26:45,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251720736] [2020-10-27 01:26:45,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:26:45,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 01:26:45,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740050959] [2020-10-27 01:26:45,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 01:26:45,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:26:45,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 01:26:45,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:26:45,496 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand 32 states. [2020-10-27 01:26:46,411 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 01:26:47,588 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-27 01:26:47,798 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-27 01:26:48,325 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-27 01:26:48,719 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-27 01:26:48,993 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-27 01:26:49,405 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-27 01:26:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:26:50,215 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2020-10-27 01:26:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:26:50,217 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2020-10-27 01:26:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:26:50,220 INFO L225 Difference]: With dead ends: 95 [2020-10-27 01:26:50,220 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 01:26:50,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 01:26:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 01:26:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-27 01:26:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 01:26:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2020-10-27 01:26:50,251 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 61 [2020-10-27 01:26:50,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:26:50,253 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2020-10-27 01:26:50,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 01:26:50,253 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2020-10-27 01:26:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 01:26:50,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:26:50,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:26:50,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:26:50,256 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:26:50,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:26:50,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1959227153, now seen corresponding path program 3 times [2020-10-27 01:26:50,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:26:50,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977629496] [2020-10-27 01:26:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:26:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:50,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:55,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:55,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 01:26:55,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:26:55,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 01:26:55,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:55,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 01:26:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:26:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 01:26:55,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:55,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:26:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:55,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:55,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:26:55,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:26:55,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:26:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:26:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:26:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:55,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:26:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-27 01:26:55,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:26:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 01:26:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:26:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:26:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:26:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:56,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:26:56,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:26:56,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:56,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:56,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:26:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:26:56,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 01:26:56,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:26:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:26:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:57,443 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-27 01:26:57,640 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-27 01:26:57,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 01:26:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:26:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:58,238 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-27 01:26:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:26:58,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977629496] [2020-10-27 01:26:58,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:26:58,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 01:26:58,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096595746] [2020-10-27 01:26:58,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 01:26:58,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:26:58,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 01:26:58,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:26:58,266 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand 28 states. [2020-10-27 01:26:59,211 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-27 01:27:00,597 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-27 01:27:01,060 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-27 01:27:01,686 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-27 01:27:02,237 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-27 01:27:02,757 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-10-27 01:27:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:03,438 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2020-10-27 01:27:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:27:03,440 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 61 [2020-10-27 01:27:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:03,442 INFO L225 Difference]: With dead ends: 99 [2020-10-27 01:27:03,442 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 01:27:03,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=146, Invalid=1576, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 01:27:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 01:27:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 01:27:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 01:27:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-10-27 01:27:03,459 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 61 [2020-10-27 01:27:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:03,459 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-10-27 01:27:03,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 01:27:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-10-27 01:27:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:27:03,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:03,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-27 01:27:03,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:27:03,461 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:03,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1010936605, now seen corresponding path program 2 times [2020-10-27 01:27:03,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:03,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391882132] [2020-10-27 01:27:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:03,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:27:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:08,652 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2020-10-27 01:27:08,777 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-27 01:27:08,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:08,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:27:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:09,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:09,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:27:09,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 01:27:09,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:27:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:27:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:09,601 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-27 01:27:09,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:09,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:09,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:27:09,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:27:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:09,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:09,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:09,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:27:09,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:27:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:27:09,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:10,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:27:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:27:10,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 01:27:10,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:27:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:27:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:11,655 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 43 [2020-10-27 01:27:12,275 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-10-27 01:27:13,361 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2020-10-27 01:27:15,634 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 187 DAG size of output: 79