/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:48:32,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:48:32,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:48:32,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:48:32,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:48:32,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:48:32,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:48:32,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:48:32,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:48:32,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:48:32,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:48:32,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:48:32,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:48:32,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:48:32,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:48:32,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:48:32,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:48:32,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:48:32,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:48:32,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:48:32,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:48:32,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:48:32,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:48:32,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:48:32,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:48:32,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:48:32,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:48:32,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:48:32,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:48:32,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:48:32,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:48:32,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:48:32,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:48:32,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:48:32,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:48:32,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:48:32,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:48:32,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:48:32,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:48:32,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:48:32,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:48:32,543 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 [2020-10-28 14:48:32,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:48:32,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:48:32,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:48:32,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:48:32,578 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:48:32,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:48:32,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:48:32,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:48:32,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:48:32,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:48:32,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:48:32,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:48:32,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:48:32,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:48:32,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:48:32,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:48:32,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:48:32,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:48:32,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:48:32,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:48:32,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:48:32,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:48:32,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:48:32,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:48:32,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:48:32,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:48:32,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:48:32,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:48:32,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:48:32,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:48:32,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:48:32,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:48:32,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:48:32,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:48:32,989 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:48:32,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2020-10-28 14:48:33,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/845eb21ae/12e6cc50fac84d4195bf1c7dd9d30ff0/FLAGa872452dc [2020-10-28 14:48:33,795 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:48:33,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2020-10-28 14:48:33,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/845eb21ae/12e6cc50fac84d4195bf1c7dd9d30ff0/FLAGa872452dc [2020-10-28 14:48:34,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/845eb21ae/12e6cc50fac84d4195bf1c7dd9d30ff0 [2020-10-28 14:48:34,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:48:34,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:48:34,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:48:34,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:48:34,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:48:34,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f44416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34, skipping insertion in model container [2020-10-28 14:48:34,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:48:34,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:48:34,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:48:34,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:48:34,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:48:34,676 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:48:34,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34 WrapperNode [2020-10-28 14:48:34,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:48:34,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:48:34,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:48:34,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:48:34,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (1/1) ... [2020-10-28 14:48:34,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:48:34,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:48:34,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:48:34,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:48:34,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (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 [2020-10-28 14:48:34,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:48:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:48:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:48:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:48:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:48:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:48:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:48:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-28 14:48:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-28 14:48:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2020-10-28 14:48:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:48:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:48:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:48:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:48:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:48:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:48:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:48:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:48:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:48:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:48:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:48:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:48:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:48:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:48:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:48:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:48:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:48:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:48:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:48:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:48:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:48:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:48:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:48:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:48:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:48:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:48:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:48:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:48:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:48:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:48:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:48:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:48:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:48:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:48:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:48:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:48:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:48:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:48:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:48:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:48:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:48:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:48:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:48:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:48:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:48:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:48:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:48:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:48:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:48:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:48:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:48:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:48:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:48:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:48:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:48:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:48:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:48:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:48:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:48:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:48:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:48:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:48:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:48:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:48:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:48:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:48:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:48:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:48:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:48:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:48:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:48:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:48:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:48:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:48:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:48:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:48:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:48:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:48:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:48:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:48:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:48:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:48:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:48:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:48:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:48:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:48:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:48:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:48:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:48:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:48:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:48:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:48:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:48:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:48:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:48:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:48:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:48:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:48:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:48:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:48:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:48:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:48:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:48:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:48:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:48:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:48:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:48:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:48:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:48:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:48:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:48:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:48:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:48:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:48:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:48:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:48:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-28 14:48:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-28 14:48:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:48:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:48:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2020-10-28 14:48:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:48:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:48:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:48:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:48:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:48:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:48:35,347 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:48:35,663 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:48:35,663 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:48:35,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:48:35 BoogieIcfgContainer [2020-10-28 14:48:35,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:48:35,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:48:35,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:48:35,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:48:35,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:48:34" (1/3) ... [2020-10-28 14:48:35,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bc3750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:48:35, skipping insertion in model container [2020-10-28 14:48:35,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:34" (2/3) ... [2020-10-28 14:48:35,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bc3750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:48:35, skipping insertion in model container [2020-10-28 14:48:35,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:48:35" (3/3) ... [2020-10-28 14:48:35,687 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_append_equal.i [2020-10-28 14:48:35,700 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:48:35,705 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:48:35,719 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:48:35,749 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:48:35,749 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:48:35,749 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:48:35,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:48:35,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:48:35,750 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:48:35,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:48:35,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:48:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-28 14:48:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:48:35,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:35,779 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] [2020-10-28 14:48:35,779 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:35,787 INFO L82 PathProgramCache]: Analyzing trace with hash 118703695, now seen corresponding path program 1 times [2020-10-28 14:48:35,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:35,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519293782] [2020-10-28 14:48:35,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:40,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 14:48:40,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:48:40,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4335 [2020-10-28 14:48:40,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:40,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 14:48:40,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:40,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:48:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:40,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:40,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:48:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:40,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:40,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:40,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:48:40,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:40,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:40,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:40,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:48:40,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:40,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:40,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:48:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:48:40,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:48:40,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:40,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:40,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:40,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:48:40,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519293782] [2020-10-28 14:48:40,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:40,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:48:40,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203243653] [2020-10-28 14:48:40,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:48:40,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:40,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:48:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:48:40,652 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-10-28 14:48:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:41,014 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2020-10-28 14:48:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:48:41,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 14:48:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:41,025 INFO L225 Difference]: With dead ends: 108 [2020-10-28 14:48:41,025 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 14:48:41,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:48:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 14:48:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 14:48:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:48:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-28 14:48:41,077 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 38 [2020-10-28 14:48:41,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:41,079 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-28 14:48:41,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:48:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-28 14:48:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:48:41,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:41,082 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] [2020-10-28 14:48:41,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:48:41,083 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:41,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash 105327536, now seen corresponding path program 1 times [2020-10-28 14:48:41,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:41,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201177610] [2020-10-28 14:48:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:46,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 14:48:46,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:48:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:48:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:46,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:48:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:46,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:46,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:48:46,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:46,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:46,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:46,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:46,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:48:46,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:46,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:48:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:48:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:48:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:46,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:46,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:46,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:48:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:46,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:48:46,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:48:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:48:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:46,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:48:46,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:48:46,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:46,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:48:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:46,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:46,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:46,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:48:46,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:46,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:46,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:48:46,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201177610] [2020-10-28 14:48:46,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:46,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:48:46,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621936761] [2020-10-28 14:48:46,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:48:46,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:46,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:48:46,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:48:46,465 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-10-28 14:48:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:46,865 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-10-28 14:48:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:48:46,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-28 14:48:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:46,868 INFO L225 Difference]: With dead ends: 74 [2020-10-28 14:48:46,868 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:48:46,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:48:46,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:48:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-28 14:48:46,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:48:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-28 14:48:46,882 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 38 [2020-10-28 14:48:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:46,882 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-28 14:48:46,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:48:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-28 14:48:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:48:46,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:46,884 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] [2020-10-28 14:48:46,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:48:46,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:46,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1458759320, now seen corresponding path program 1 times [2020-10-28 14:48:46,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:46,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565455285] [2020-10-28 14:48:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:49,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 14:48:49,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:48:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-28 14:48:49,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:49,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:48:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:48:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:50,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:48:50,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:48:50,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:48:50,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:48:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:50,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:48:50,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:50,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:48:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:48:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:48:50,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:48:50,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:48:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:48:50,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:50,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:48:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:48:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:48:50,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565455285] [2020-10-28 14:48:50,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:50,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 14:48:50,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736073909] [2020-10-28 14:48:50,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:48:50,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:50,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:48:50,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:48:50,821 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 14 states. [2020-10-28 14:48:51,719 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-10-28 14:48:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:51,968 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-28 14:48:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:48:51,969 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-28 14:48:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:51,972 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:48:51,972 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:48:51,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:48:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:48:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-28 14:48:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 14:48:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-28 14:48:51,982 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 46 [2020-10-28 14:48:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:51,983 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-28 14:48:51,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:48:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-28 14:48:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:48:51,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:51,988 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] [2020-10-28 14:48:51,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:48:51,989 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:51,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:51,989 INFO L82 PathProgramCache]: Analyzing trace with hash 161446778, now seen corresponding path program 1 times [2020-10-28 14:48:51,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:51,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995573425] [2020-10-28 14:48:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:57,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:57,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:48:57,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:48:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:48:57,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:57,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 14:48:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 14:48:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:57,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:57,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:57,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:48:57,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:57,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:57,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:57,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:48:57,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 14:48:57,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:57,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:48:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:48:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:57,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:57,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:57,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:48:57,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:57,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:48:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:57,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:48:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:57,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:57,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:57,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:48:57,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:57,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:48:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:57,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:48:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:58,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:48:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-28 14:48:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:58,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:48:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:48:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:58,838 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-28 14:48:59,122 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-28 14:48:59,426 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-28 14:48:59,729 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-28 14:48:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:59,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:59,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:59,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:59,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:48:59,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:59,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:48:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:48:59,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:00,521 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-28 14:49:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:49:00,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995573425] [2020-10-28 14:49:00,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:00,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:49:00,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043720024] [2020-10-28 14:49:00,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:49:00,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:00,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:49:00,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:49:00,560 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 26 states. [2020-10-28 14:49:02,270 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-10-28 14:49:02,711 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-28 14:49:03,096 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2020-10-28 14:49:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:49:03,936 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-10-28 14:49:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:49:03,937 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2020-10-28 14:49:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:49:03,943 INFO L225 Difference]: With dead ends: 75 [2020-10-28 14:49:03,943 INFO L226 Difference]: Without dead ends: 71 [2020-10-28 14:49:03,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=128, Invalid=1432, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 14:49:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-28 14:49:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2020-10-28 14:49:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:49:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-28 14:49:03,965 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 49 [2020-10-28 14:49:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:49:03,966 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-28 14:49:03,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:49:03,966 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-28 14:49:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:49:03,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:49:03,968 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] [2020-10-28 14:49:03,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:49:03,969 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:49:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:49:03,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1700088245, now seen corresponding path program 1 times [2020-10-28 14:49:03,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:49:03,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276537485] [2020-10-28 14:49:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:49:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:07,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:07,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:49:07,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:49:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3909 [2020-10-28 14:49:07,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:07,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:49:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:49:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 14:49:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:08,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:49:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:49:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 14:49:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:49:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:49:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:49:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:49:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:08,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 14:49:08,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:49:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:49:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:49:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:49:08,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:49:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 14:49:08,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:49:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:08,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:49:08,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:09,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:09,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:09,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:09,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:49:09,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:09,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:49:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:49:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:49:09,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276537485] [2020-10-28 14:49:09,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:09,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:49:09,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189772934] [2020-10-28 14:49:09,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:49:09,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:09,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:49:09,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:49:09,343 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 26 states. [2020-10-28 14:49:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:49:10,888 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-28 14:49:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:49:10,889 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2020-10-28 14:49:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:49:10,890 INFO L225 Difference]: With dead ends: 74 [2020-10-28 14:49:10,890 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 14:49:10,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 14:49:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 14:49:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 14:49:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:49:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-28 14:49:10,909 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 49 [2020-10-28 14:49:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:49:10,910 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-28 14:49:10,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:49:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-28 14:49:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:49:10,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:49:10,912 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] [2020-10-28 14:49:10,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:49:10,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:49:10,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:49:10,914 INFO L82 PathProgramCache]: Analyzing trace with hash -753151723, now seen corresponding path program 1 times [2020-10-28 14:49:10,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:49:10,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583604015] [2020-10-28 14:49:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:49:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:12,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:49:12,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-10-28 14:49:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:12,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 14:49:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:49:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:49:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:12,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:12,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:12,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:12,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:49:12,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:12,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:13,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:49:13,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-28 14:49:13,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:13,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:49:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:49:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:13,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:13,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:13,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:13,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:49:13,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:13,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:49:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:13,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:49:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:49:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:13,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:13,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:49:13,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:13,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:49:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:49:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:13,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:49:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:13,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:13,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:49:13,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:13,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 14:49:13,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:13,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:49:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:49:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:14,614 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-28 14:49:15,120 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-28 14:49:15,684 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-10-28 14:49:16,368 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2020-10-28 14:49:17,655 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2020-10-28 14:49:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:17,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:17,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:17,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 14:49:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:17,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:49:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:49:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:18,497 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2020-10-28 14:49:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:49:18,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583604015] [2020-10-28 14:49:18,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:18,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:49:18,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792322187] [2020-10-28 14:49:18,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:49:18,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:49:18,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:49:18,568 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 28 states. [2020-10-28 14:49:19,312 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 14:49:20,483 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 14:49:21,127 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-28 14:49:22,743 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-28 14:49:23,627 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 110 [2020-10-28 14:49:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:49:24,691 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-10-28 14:49:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:49:24,692 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2020-10-28 14:49:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:49:24,695 INFO L225 Difference]: With dead ends: 80 [2020-10-28 14:49:24,695 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 14:49:24,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=159, Invalid=1733, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 14:49:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 14:49:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2020-10-28 14:49:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 14:49:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-10-28 14:49:24,728 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 51 [2020-10-28 14:49:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:49:24,728 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-10-28 14:49:24,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:49:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-10-28 14:49:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:49:24,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:49:24,733 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, 1] [2020-10-28 14:49:24,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:49:24,733 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:49:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:49:24,734 INFO L82 PathProgramCache]: Analyzing trace with hash -982695175, now seen corresponding path program 1 times [2020-10-28 14:49:24,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:49:24,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365075190] [2020-10-28 14:49:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:49:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:29,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:49:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:29,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:29,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:29,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:29,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:29,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:49:29,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:29,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:29,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:29,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:30,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:30,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:49:30,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:30,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 14:49:30,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:30,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:49:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:49:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:49:30,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:30,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:49:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:30,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:30,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:30,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:30,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:49:30,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:30,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:49:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:49:30,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:49:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:30,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:49:30,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:31,033 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-28 14:49:31,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:31,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:31,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:49:31,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:31,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:49:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:49:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:49:31,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365075190] [2020-10-28 14:49:31,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:31,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:49:31,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236088727] [2020-10-28 14:49:31,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:49:31,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:31,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:49:31,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:49:31,525 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 23 states. [2020-10-28 14:49:32,774 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-28 14:49:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:49:33,507 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2020-10-28 14:49:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:49:33,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 52 [2020-10-28 14:49:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:49:33,509 INFO L225 Difference]: With dead ends: 89 [2020-10-28 14:49:33,509 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 14:49:33,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:49:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 14:49:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-10-28 14:49:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 14:49:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-28 14:49:33,528 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 52 [2020-10-28 14:49:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:49:33,529 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-28 14:49:33,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:49:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-28 14:49:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:49:33,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:49:33,536 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:49:33,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:49:33,536 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:49:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:49:33,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1736592066, now seen corresponding path program 2 times [2020-10-28 14:49:33,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:49:33,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539027723] [2020-10-28 14:49:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:49:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:49:38,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:49:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:49:38,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:49:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:49:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:49:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:49:38,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:49:38,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 14:49:38,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:49:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:49:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 14:49:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:38,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:49:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:49:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:49:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:49:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:38,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:49:38,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:49:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:49:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:49:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:38,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:38,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:38,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:49:38,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:49:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:49:38,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 14:49:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:38,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:49:38,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:49:38,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:49:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:38,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:38,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:38,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:49:38,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:38,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 14:49:38,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539027723] [2020-10-28 14:49:38,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:38,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:49:38,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252661174] [2020-10-28 14:49:38,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:49:38,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:38,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:49:38,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:49:38,883 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 8 states. [2020-10-28 14:49:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:49:39,184 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2020-10-28 14:49:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:49:39,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-28 14:49:39,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:49:39,185 INFO L225 Difference]: With dead ends: 115 [2020-10-28 14:49:39,185 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 14:49:39,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:49:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 14:49:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-28 14:49:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:49:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-10-28 14:49:39,200 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 57 [2020-10-28 14:49:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:49:39,200 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-10-28 14:49:39,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:49:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-10-28 14:49:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:49:39,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:49:39,208 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] [2020-10-28 14:49:39,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:49:39,208 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:49:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:49:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash -360336496, now seen corresponding path program 1 times [2020-10-28 14:49:39,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:49:39,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813513552] [2020-10-28 14:49:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:49:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:44,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:44,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:49:44,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:49:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:49:44,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:44,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 14:49:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:49:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:49:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:44,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:44,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:49:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:44,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:44,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:49:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:44,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:49:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:49:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:44,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:49:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:49:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:44,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:49:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:44,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:44,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:49:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 14:49:44,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:44,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:49:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:49:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:45,799 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2020-10-28 14:49:45,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:45,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:49:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:49:46,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813513552] [2020-10-28 14:49:46,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:46,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:49:46,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400120023] [2020-10-28 14:49:46,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:49:46,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:46,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:49:46,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:49:46,177 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 23 states. [2020-10-28 14:49:47,217 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-28 14:49:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:49:47,817 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-10-28 14:49:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:49:47,818 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-10-28 14:49:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:49:47,819 INFO L225 Difference]: With dead ends: 73 [2020-10-28 14:49:47,819 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 14:49:47,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:49:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 14:49:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-10-28 14:49:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:49:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-10-28 14:49:47,836 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 53 [2020-10-28 14:49:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:49:47,837 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-10-28 14:49:47,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:49:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-10-28 14:49:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:49:47,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:49:47,842 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] [2020-10-28 14:49:47,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:49:47,842 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:49:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:49:47,843 INFO L82 PathProgramCache]: Analyzing trace with hash 785984496, now seen corresponding path program 2 times [2020-10-28 14:49:47,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:49:47,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823341048] [2020-10-28 14:49:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:49:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4778 [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:49:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:52,855 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-28 14:49:53,002 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-28 14:49:53,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:49:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:53,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:53,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:53,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:49:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:53,703 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-28 14:49:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:53,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:53,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:53,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:49:53,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:53,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:49:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:49:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:49:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:49:53,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:53,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:49:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:49:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:49:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:54,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:54,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:49:54,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-28 14:49:54,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:54,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:49:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:49:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:49:54,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:55,354 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-28 14:49:56,133 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-28 14:49:57,103 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-28 14:49:58,350 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 139 DAG size of output: 101 [2020-10-28 14:49:59,983 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 199 DAG size of output: 125 [2020-10-28 14:50:01,149 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 122 [2020-10-28 14:50:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:01,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:01,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:01,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:50:01,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:01,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:50:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:01,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:02,092 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2020-10-28 14:50:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:50:02,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823341048] [2020-10-28 14:50:02,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:02,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 14:50:02,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736923127] [2020-10-28 14:50:02,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 14:50:02,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:02,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 14:50:02,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:50:02,139 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 29 states. [2020-10-28 14:50:02,842 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 14:50:03,399 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 14:50:03,895 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 14:50:04,418 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 14:50:05,291 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-28 14:50:05,520 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-28 14:50:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:07,235 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-10-28 14:50:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:50:07,235 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 53 [2020-10-28 14:50:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:07,237 INFO L225 Difference]: With dead ends: 79 [2020-10-28 14:50:07,237 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 14:50:07,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 14:50:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 14:50:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-10-28 14:50:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 14:50:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-28 14:50:07,251 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 53 [2020-10-28 14:50:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:07,251 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-28 14:50:07,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 14:50:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-28 14:50:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:50:07,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:07,252 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] [2020-10-28 14:50:07,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:50:07,253 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:07,253 INFO L82 PathProgramCache]: Analyzing trace with hash -514112642, now seen corresponding path program 1 times [2020-10-28 14:50:07,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:07,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427267788] [2020-10-28 14:50:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:07,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:11,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:11,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:50:11,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:50:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3768 [2020-10-28 14:50:11,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:11,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 14:50:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:50:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:11,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:11,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:11,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:50:11,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:11,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 14:50:11,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:11,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:50:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:50:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:50:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:50:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:11,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:50:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:11,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:11,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:11,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:50:11,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:11,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:50:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:11,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:50:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:11,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:11,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:50:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 14:50:11,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:11,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:50:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:50:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:13,232 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-10-28 14:50:13,478 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-28 14:50:13,740 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-28 14:50:14,178 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2020-10-28 14:50:18,227 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 309 DAG size of output: 221 [2020-10-28 14:50:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:18,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:18,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:50:18,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:18,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:50:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:18,609 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-28 14:50:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:50:18,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427267788] [2020-10-28 14:50:18,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:18,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:50:18,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880043643] [2020-10-28 14:50:18,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:50:18,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:18,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:50:18,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:50:18,648 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 28 states. [2020-10-28 14:50:20,808 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 14:50:21,340 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-28 14:50:23,552 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 14:50:25,824 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 14:50:27,763 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-28 14:50:28,416 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-10-28 14:50:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:30,075 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 14:50:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:50:30,076 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2020-10-28 14:50:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:30,077 INFO L225 Difference]: With dead ends: 87 [2020-10-28 14:50:30,078 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 14:50:30,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 14:50:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 14:50:30,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2020-10-28 14:50:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 14:50:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2020-10-28 14:50:30,092 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 54 [2020-10-28 14:50:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:30,092 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2020-10-28 14:50:30,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:50:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2020-10-28 14:50:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 14:50:30,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:30,094 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] [2020-10-28 14:50:30,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:50:30,094 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1280820139, now seen corresponding path program 1 times [2020-10-28 14:50:30,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:30,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40400168] [2020-10-28 14:50:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4080 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:50:34,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:34,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:50:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:35,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:35,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:35,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:35,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:50:35,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:35,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:50:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:50:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:50:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:35,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:35,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:35,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:50:35,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:35,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:50:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:50:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:35,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:35,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:35,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:50:35,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:35,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-28 14:50:35,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:35,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:50:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:35,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:50:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:36,449 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-28 14:50:36,802 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-28 14:50:37,303 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-10-28 14:50:38,077 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 111 [2020-10-28 14:50:39,207 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 111 [2020-10-28 14:50:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 14:50:39,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:50:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:40,187 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-28 14:50:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:50:40,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40400168] [2020-10-28 14:50:40,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:40,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 14:50:40,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969116926] [2020-10-28 14:50:40,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 14:50:40,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:40,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 14:50:40,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:50:40,227 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 29 states. [2020-10-28 14:50:40,981 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 14:50:41,735 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-28 14:50:42,366 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 14:50:43,019 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-28 14:50:44,493 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-28 14:50:45,263 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2020-10-28 14:50:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:46,454 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2020-10-28 14:50:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:50:46,455 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2020-10-28 14:50:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:46,456 INFO L225 Difference]: With dead ends: 83 [2020-10-28 14:50:46,457 INFO L226 Difference]: Without dead ends: 79 [2020-10-28 14:50:46,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=162, Invalid=1908, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 14:50:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-28 14:50:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2020-10-28 14:50:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 14:50:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-28 14:50:46,470 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 55 [2020-10-28 14:50:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:46,470 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-28 14:50:46,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 14:50:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-28 14:50:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 14:50:46,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:46,471 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-28 14:50:46,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:50:46,472 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:46,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1867826165, now seen corresponding path program 3 times [2020-10-28 14:50:46,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:46,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758111416] [2020-10-28 14:50:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:47,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:50:47,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:50:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-28 14:50:47,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:47,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 14:50:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:50:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:48,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:48,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:48,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:50:48,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:48,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:48,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:48,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:50:48,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-28 14:50:48,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:48,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:50:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:50:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:48,765 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-28 14:50:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:48,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:48,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:48,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:50:48,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:48,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:50:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:50:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:50:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:48,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:48,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:50:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:48,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:50:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:50:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:50:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:49,816 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 14:50:50,093 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 14:50:50,569 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-28 14:50:51,017 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-28 14:50:51,491 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-10-28 14:50:52,098 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-28 14:50:52,578 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-28 14:50:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:53,525 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-10-28 14:50:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:50:53,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758111416] [2020-10-28 14:50:53,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:53,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 14:50:53,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935543116] [2020-10-28 14:50:53,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 14:50:53,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:53,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 14:50:53,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:50:53,571 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 30 states. [2020-10-28 14:50:54,185 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:50:54,984 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-28 14:50:55,302 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 14:50:55,628 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 14:50:57,208 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2020-10-28 14:50:57,925 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-28 14:50:58,753 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-10-28 14:50:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:59,831 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-28 14:50:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 14:50:59,833 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-10-28 14:50:59,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:59,834 INFO L225 Difference]: With dead ends: 82 [2020-10-28 14:50:59,834 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 14:50:59,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=169, Invalid=1993, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 14:50:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 14:50:59,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2020-10-28 14:50:59,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 14:50:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-28 14:50:59,848 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 55 [2020-10-28 14:50:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:59,848 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-28 14:50:59,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 14:50:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-28 14:50:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:50:59,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:59,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:59,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:50:59,849 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:59,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:59,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1941566685, now seen corresponding path program 1 times [2020-10-28 14:50:59,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:59,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333565527] [2020-10-28 14:50:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:51:00,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-28 14:51:00,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 14:51:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:51:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:51:00,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:00,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:00,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:51:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:00,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:51:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:51:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:51:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:00,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:51:00,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:51:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:00,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:51:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:01,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:01,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:01,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:01,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 14:51:01,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:01,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:51:01,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:01,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:01,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:01,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:51:01,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:01,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:51:01,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333565527] [2020-10-28 14:51:01,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:01,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:51:01,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181744712] [2020-10-28 14:51:01,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:51:01,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:01,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:51:01,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:51:01,901 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 23 states. [2020-10-28 14:51:03,389 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-10-28 14:51:03,647 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-28 14:51:03,904 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-28 14:51:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:04,163 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-28 14:51:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:51:04,164 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2020-10-28 14:51:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:04,166 INFO L225 Difference]: With dead ends: 84 [2020-10-28 14:51:04,166 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 14:51:04,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 14:51:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 14:51:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-28 14:51:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 14:51:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-28 14:51:04,182 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 56 [2020-10-28 14:51:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:04,182 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-28 14:51:04,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:51:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-28 14:51:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:51:04,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:04,183 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, 1] [2020-10-28 14:51:04,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:51:04,183 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1177864509, now seen corresponding path program 2 times [2020-10-28 14:51:04,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:04,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965276024] [2020-10-28 14:51:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:09,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:09,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:51:09,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:51:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4836 [2020-10-28 14:51:09,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:09,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 14:51:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:51:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:09,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:09,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:09,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:51:09,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:09,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:09,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:09,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:09,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:09,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:51:09,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 14:51:09,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:09,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:51:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:51:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:09,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:09,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:09,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:09,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:51:09,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:09,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:51:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:09,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:51:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:09,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:09,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:09,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:51:09,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:09,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:51:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:09,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:51:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:10,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:10,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:51:10,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:10,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-28 14:51:10,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:10,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:51:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:51:10,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:11,243 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-10-28 14:51:11,452 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-10-28 14:51:11,767 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-28 14:51:12,125 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-28 14:51:12,430 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-28 14:51:12,836 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-10-28 14:51:13,186 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-28 14:51:19,913 WARN L193 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 386 DAG size of output: 241 [2020-10-28 14:51:21,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:21,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:21,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:21,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:51:21,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:21,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:51:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:22,033 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-10-28 14:51:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:51:22,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965276024] [2020-10-28 14:51:22,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:22,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 14:51:22,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597162069] [2020-10-28 14:51:22,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 14:51:22,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:22,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 14:51:22,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:51:22,076 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 31 states. [2020-10-28 14:51:24,904 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 246 [2020-10-28 14:51:28,821 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 247 [2020-10-28 14:51:32,348 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 251 [2020-10-28 14:51:34,222 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-28 14:51:34,565 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-28 14:51:35,111 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:51:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:37,241 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 14:51:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 14:51:37,243 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 56 [2020-10-28 14:51:37,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:37,244 INFO L225 Difference]: With dead ends: 87 [2020-10-28 14:51:37,245 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 14:51:37,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=166, Invalid=1996, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 14:51:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 14:51:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2020-10-28 14:51:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 14:51:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2020-10-28 14:51:37,263 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 56 [2020-10-28 14:51:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:37,264 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2020-10-28 14:51:37,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 14:51:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2020-10-28 14:51:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:51:37,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:37,265 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] [2020-10-28 14:51:37,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:51:37,265 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:37,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2115618554, now seen corresponding path program 2 times [2020-10-28 14:51:37,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:37,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722925958] [2020-10-28 14:51:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:51:41,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:41,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4163 [2020-10-28 14:51:41,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 14:51:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 14:51:41,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:41,875 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 41 [2020-10-28 14:51:42,223 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 44 [2020-10-28 14:51:42,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:42,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:42,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:42,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:42,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:42,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:42,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:42,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:42,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:51:42,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 14:51:42,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:42,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:51:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:43,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:43,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:51:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:51:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:43,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:43,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:51:43,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:43,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:51:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:43,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:51:43,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:44,090 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-28 14:51:44,602 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-28 14:51:45,302 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-10-28 14:51:45,846 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-28 14:51:46,964 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2020-10-28 14:51:47,261 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-28 14:51:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:51:47,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:51:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,753 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-28 14:51:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:51:47,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722925958] [2020-10-28 14:51:47,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:47,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 14:51:47,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371268226] [2020-10-28 14:51:47,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 14:51:47,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:47,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 14:51:47,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:51:47,796 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 29 states. [2020-10-28 14:51:48,554 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-28 14:51:49,389 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-28 14:51:51,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:51,215 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-10-28 14:51:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:51:51,216 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2020-10-28 14:51:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:51,217 INFO L225 Difference]: With dead ends: 85 [2020-10-28 14:51:51,218 INFO L226 Difference]: Without dead ends: 81 [2020-10-28 14:51:51,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=114, Invalid=1446, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 14:51:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-28 14:51:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2020-10-28 14:51:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 14:51:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-28 14:51:51,232 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 57 [2020-10-28 14:51:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:51,233 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-28 14:51:51,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 14:51:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-28 14:51:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:51:51,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:51,234 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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] [2020-10-28 14:51:51,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:51:51,234 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash -969297562, now seen corresponding path program 4 times [2020-10-28 14:51:51,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:51,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017079646] [2020-10-28 14:51:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:55,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:55,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:51:55,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:51:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4225 [2020-10-28 14:51:55,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:55,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 14:51:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 14:51:55,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:55,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:51:55,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:56,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:56,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:51:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:56,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:51:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:56,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:56,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:51:56,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:56,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:51:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:51:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:57,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:51:57,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:51:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-28 14:51:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:57,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:51:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:58,081 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-28 14:51:58,287 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-28 14:51:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:58,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:58,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:58,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:58,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:51:58,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:58,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:58,822 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2020-10-28 14:51:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 14:51:58,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017079646] [2020-10-28 14:51:58,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:58,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:51:58,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113307250] [2020-10-28 14:51:58,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:51:58,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:58,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:51:58,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:51:58,852 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 28 states. [2020-10-28 14:51:59,804 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-28 14:52:01,223 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-28 14:52:01,568 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-28 14:52:01,957 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-28 14:52:02,456 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2020-10-28 14:52:02,852 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-28 14:52:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:03,286 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-28 14:52:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:52:03,287 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 57 [2020-10-28 14:52:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:03,288 INFO L225 Difference]: With dead ends: 84 [2020-10-28 14:52:03,289 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 14:52:03,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=159, Invalid=1733, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 14:52:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 14:52:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-28 14:52:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:52:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-28 14:52:03,301 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 57 [2020-10-28 14:52:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:03,301 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-28 14:52:03,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:52:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-28 14:52:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:52:03,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:03,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:03,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:52:03,303 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:03,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:03,303 INFO L82 PathProgramCache]: Analyzing trace with hash 143016232, now seen corresponding path program 1 times [2020-10-28 14:52:03,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:03,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222762663] [2020-10-28 14:52:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:03,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:08,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:52:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:08,529 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-10-28 14:52:08,689 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 26 [2020-10-28 14:52:08,803 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2020-10-28 14:52:08,946 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-10-28 14:52:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:09,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:09,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:09,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:52:09,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:52:09,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:09,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:52:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:09,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:09,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:09,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:52:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:09,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:09,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:52:09,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 14:52:09,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:09,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:52:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:52:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:09,890 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2020-10-28 14:52:10,401 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 29 [2020-10-28 14:52:11,142 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 41 [2020-10-28 14:52:17,169 WARN L193 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 485 DAG size of output: 167