/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block 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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:38:42,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:38:42,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:38:42,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:38:42,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:38:42,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:38:42,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:38:42,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:38:42,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:38:42,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:38:42,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:38:42,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:38:42,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:38:42,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:38:42,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:38:42,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:38:42,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:38:42,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:38:42,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:38:42,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:38:42,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:38:42,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:38:42,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:38:42,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:38:42,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:38:42,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:38:42,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:38:42,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:38:42,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:38:42,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:38:42,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:38:42,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:38:42,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:38:42,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:38:42,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:38:42,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:38:42,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:38:42,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:38:42,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:38:42,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:38:42,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:38:42,917 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 [2020-10-14 23:38:42,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:38:42,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:38:42,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:38:42,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:38:42,959 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:38:42,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:38:42,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:38:42,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:38:42,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:38:42,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:38:42,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:38:42,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:38:42,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:38:42,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:38:42,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:38:42,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:38:42,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:38:42,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:38:42,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:38:42,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:38:42,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:38:42,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:38:42,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:38:42,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:38:42,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:38:42,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:38:42,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:38:42,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:38:42,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:38:42,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:38:43,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:38:43,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:38:43,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:38:43,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:38:43,325 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:38:43,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2020-10-14 23:38:43,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5305a06bf/787614bd08fb41e5be775f547713bb76/FLAG63b4a416a [2020-10-14 23:38:43,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:38:43,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2020-10-14 23:38:43,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5305a06bf/787614bd08fb41e5be775f547713bb76/FLAG63b4a416a [2020-10-14 23:38:44,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5305a06bf/787614bd08fb41e5be775f547713bb76 [2020-10-14 23:38:44,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:38:44,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:38:44,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:38:44,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:38:44,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:38:44,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d0cd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44, skipping insertion in model container [2020-10-14 23:38:44,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:38:44,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:38:44,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:38:44,722 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:38:44,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:38:44,834 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:38:44,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44 WrapperNode [2020-10-14 23:38:44,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:38:44,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:38:44,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:38:44,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:38:44,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2020-10-14 23:38:44,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:38:44,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:38:44,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:38:44,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:38:44,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (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 [2020-10-14 23:38:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:38:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:38:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:38:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:38:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:38:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:38:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-14 23:38:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-14 23:38:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2020-10-14 23:38:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:38:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:38:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:38:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:38:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:38:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:38:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:38:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:38:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:38:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:38:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:38:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:38:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:38:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:38:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:38:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:38:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:38:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:38:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:38:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:38:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:38:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:38:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:38:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:38:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:38:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:38:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:38:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:38:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:38:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:38:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:38:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:38:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:38:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:38:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:38:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:38:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:38:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:38:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:38:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:38:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:38:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:38:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:38:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:38:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:38:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:38:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:38:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:38:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:38:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:38:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:38:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:38:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:38:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:38:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:38:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:38:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:38:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:38:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:38:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:38:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:38:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:38:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:38:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:38:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:38:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:38:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:38:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:38:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:38:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:38:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:38:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:38:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:38:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:38:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:38:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:38:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:38:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:38:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:38:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:38:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:38:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:38:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:38:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:38:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:38:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:38:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:38:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:38:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:38:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:38:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:38:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-14 23:38:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-14 23:38:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:38:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:38:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2020-10-14 23:38:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:38:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:38:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:38:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:38:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:38:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:38:45,519 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:38:45,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:38:45,701 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:38:45,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:45 BoogieIcfgContainer [2020-10-14 23:38:45,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:38:45,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:38:45,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:38:45,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:38:45,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:38:44" (1/3) ... [2020-10-14 23:38:45,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f8b65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:45, skipping insertion in model container [2020-10-14 23:38:45,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (2/3) ... [2020-10-14 23:38:45,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f8b65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:45, skipping insertion in model container [2020-10-14 23:38:45,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:45" (3/3) ... [2020-10-14 23:38:45,717 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2020-10-14 23:38:45,729 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:38:45,738 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:38:45,755 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:38:45,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:38:45,781 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:38:45,781 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:38:45,781 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:38:45,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:38:45,782 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:38:45,782 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:38:45,782 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:38:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-14 23:38:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:38:45,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:45,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:45,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1640491568, now seen corresponding path program 1 times [2020-10-14 23:38:45,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:45,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104609291] [2020-10-14 23:38:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:47,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:38:47,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:47,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-14 23:38:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:47,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:38:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:38:47,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:38:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:47,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:47,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:38:47,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:47,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:47,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:47,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:38:47,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:47,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:38:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:47,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:47,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:38:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:47,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:38:47,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 23:38:47,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:47,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:38:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:38:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:48,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:48,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:48,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:38:48,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:48,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:38:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:38:48,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104609291] [2020-10-14 23:38:48,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:38:48,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 23:38:48,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494371791] [2020-10-14 23:38:48,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:38:48,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:38:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:38:48,399 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 15 states. [2020-10-14 23:38:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:49,652 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2020-10-14 23:38:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:38:49,654 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-10-14 23:38:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:49,667 INFO L225 Difference]: With dead ends: 111 [2020-10-14 23:38:49,668 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:38:49,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:38:49,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:38:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 23:38:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:38:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-14 23:38:49,726 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 29 [2020-10-14 23:38:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:49,727 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-14 23:38:49,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:38:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-14 23:38:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:38:49,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:49,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:49,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:38:49,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:49,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2071724172, now seen corresponding path program 1 times [2020-10-14 23:38:49,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:49,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133633161] [2020-10-14 23:38:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:51,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:38:51,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:51,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-14 23:38:51,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:51,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:38:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:38:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:38:51,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:51,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:51,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:38:51,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:38:51,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:51,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:38:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:38:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:51,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:38:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:51,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:51,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:38:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 23:38:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:51,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:38:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:38:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:51,956 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-14 23:38:52,130 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-14 23:38:52,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:52,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:52,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:52,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:52,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 23:38:52,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:52,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:38:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:38:52,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133633161] [2020-10-14 23:38:52,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:38:52,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:38:52,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703982375] [2020-10-14 23:38:52,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:38:52,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:52,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:38:52,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:38:52,422 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 19 states. [2020-10-14 23:38:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:53,254 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-10-14 23:38:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:38:53,254 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2020-10-14 23:38:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:53,256 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:38:53,256 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:38:53,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:38:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:38:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-14 23:38:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:38:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-14 23:38:53,269 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 34 [2020-10-14 23:38:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:53,269 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-14 23:38:53,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:38:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-14 23:38:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:38:53,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:53,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:53,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:38:53,272 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:53,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1937851779, now seen corresponding path program 1 times [2020-10-14 23:38:53,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:53,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296723163] [2020-10-14 23:38:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:58,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:58,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:38:58,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:38:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:38:58,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:58,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:38:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:38:58,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:58,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:58,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:58,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:58,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:38:58,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:58,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:38:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:38:58,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:38:58,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:58,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:38:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:38:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:58,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:38:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:58,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:59,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:59,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:38:59,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:38:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-10-14 23:38:59,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:59,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:38:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:38:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:00,317 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-10-14 23:39:00,551 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-14 23:39:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:00,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:00,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:00,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:39:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:00,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:39:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:39:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:00,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296723163] [2020-10-14 23:39:00,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:39:00,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-14 23:39:00,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110065039] [2020-10-14 23:39:00,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:39:00,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:00,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:39:00,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:39:00,684 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 20 states. [2020-10-14 23:39:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:01,593 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-14 23:39:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:39:01,594 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2020-10-14 23:39:01,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:01,596 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:39:01,596 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:39:01,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:39:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:39:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-10-14 23:39:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:39:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-10-14 23:39:01,607 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 36 [2020-10-14 23:39:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:01,608 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-10-14 23:39:01,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:39:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-10-14 23:39:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:39:01,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:01,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:01,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:39:01,610 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:01,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1754985232, now seen corresponding path program 1 times [2020-10-14 23:39:01,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:01,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775139119] [2020-10-14 23:39:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:01,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:01,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:39:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 23:39:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:01,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:39:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:39:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:01,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:01,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:01,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:01,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:01,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:01,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:01,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:01,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:01,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:39:01,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:01,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:39:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:39:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:39:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:39:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:01,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:01,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:01,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:01,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:39:01,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:01,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:01,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:39:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:01,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:01,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:01,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:01,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:39:01,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:01,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:01,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:01,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775139119] [2020-10-14 23:39:01,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:39:01,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:39:01,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958694909] [2020-10-14 23:39:01,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:39:01,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:01,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:39:01,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:39:01,831 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 7 states. [2020-10-14 23:39:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:02,015 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2020-10-14 23:39:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:39:02,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-14 23:39:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:02,017 INFO L225 Difference]: With dead ends: 75 [2020-10-14 23:39:02,017 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:39:02,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:39:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:39:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 23:39:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:39:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 23:39:02,026 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 31 [2020-10-14 23:39:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:02,026 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 23:39:02,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:39:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 23:39:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:39:02,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:02,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:02,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:39:02,028 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:02,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1937850105, now seen corresponding path program 1 times [2020-10-14 23:39:02,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:02,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085989653] [2020-10-14 23:39:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:02,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:02,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:39:02,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-14 23:39:02,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:02,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:39:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:39:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:03,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:03,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:03,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:03,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:03,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:03,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:39:03,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 23:39:03,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:03,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:39:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:39:03,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:03,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:39:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:03,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:03,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:03,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:03,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 23:39:03,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:03,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:39:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:39:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:04,159 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-14 23:39:04,437 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-14 23:39:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:04,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:04,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:04,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:04,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:39:04,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:04,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:05,100 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-14 23:39:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:05,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085989653] [2020-10-14 23:39:05,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:05,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:39:05,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345169629] [2020-10-14 23:39:05,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:39:05,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:05,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:39:05,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:39:05,120 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 23 states. [2020-10-14 23:39:06,456 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 23:39:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:06,845 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-10-14 23:39:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:39:06,846 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 36 [2020-10-14 23:39:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:06,848 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:39:06,848 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:39:06,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:39:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:39:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-14 23:39:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:39:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-14 23:39:06,857 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 36 [2020-10-14 23:39:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:06,858 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-14 23:39:06,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:39:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-14 23:39:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:39:06,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:06,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:06,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:39:06,860 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:06,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:06,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1257793409, now seen corresponding path program 1 times [2020-10-14 23:39:06,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:06,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494628532] [2020-10-14 23:39:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:06,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:07,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:08,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:39:08,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:39:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1949 [2020-10-14 23:39:08,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:08,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:39:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:39:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:08,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:08,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:39:08,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:08,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:08,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:08,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:39:08,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 23:39:08,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:08,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:39:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:39:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:09,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:09,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:09,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:09,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 23:39:09,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:09,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:39:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:09,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:39:09,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:09,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:09,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:39:09,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:09,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:09,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494628532] [2020-10-14 23:39:09,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:39:09,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-14 23:39:09,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438659622] [2020-10-14 23:39:09,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:39:09,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:09,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:39:09,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:39:09,427 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 16 states. [2020-10-14 23:39:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:10,184 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-14 23:39:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:39:10,185 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-14 23:39:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:10,186 INFO L225 Difference]: With dead ends: 84 [2020-10-14 23:39:10,186 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:39:10,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:39:10,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:39:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 23:39:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:39:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-14 23:39:10,194 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 36 [2020-10-14 23:39:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:10,194 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-14 23:39:10,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:39:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-14 23:39:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:39:10,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:10,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:10,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:39:10,196 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1741899832, now seen corresponding path program 1 times [2020-10-14 23:39:10,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:10,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263188873] [2020-10-14 23:39:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:10,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:39:10,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 23:39:10,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:10,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:39:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:39:10,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:10,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:10,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:10,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:10,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:10,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:39:10,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:39:10,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:10,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:10,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:10,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:39:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:39:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:10,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:10,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:39:10,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:10,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:39:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:39:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:10,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:39:10,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:10,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:10,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263188873] [2020-10-14 23:39:10,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:10,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:39:10,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144595584] [2020-10-14 23:39:10,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:39:10,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:10,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:39:10,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:39:10,798 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 11 states. [2020-10-14 23:39:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:11,063 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-10-14 23:39:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:39:11,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-14 23:39:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:11,068 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:39:11,069 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:39:11,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:39:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:39:11,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-10-14 23:39:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:39:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 23:39:11,091 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 38 [2020-10-14 23:39:11,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:11,092 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 23:39:11,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:39:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 23:39:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:39:11,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:11,099 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:39:11,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:39:11,099 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:11,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:11,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1741901506, now seen corresponding path program 1 times [2020-10-14 23:39:11,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:11,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051622893] [2020-10-14 23:39:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:16,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:39:16,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:39:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 23:39:16,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:16,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:39:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:39:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:16,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:16,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:16,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:16,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:16,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:16,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:16,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:16,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:16,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:39:16,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:39:16,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:16,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:39:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:39:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:17,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:17,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:17,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 23:39:17,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:17,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:39:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:39:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:18,525 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 112 [2020-10-14 23:39:19,383 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 97 [2020-10-14 23:39:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:19,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:19,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:19,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:19,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:39:19,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:19,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:19,883 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-10-14 23:39:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:19,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051622893] [2020-10-14 23:39:19,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:19,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:39:19,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676030411] [2020-10-14 23:39:19,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:39:19,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:19,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:39:19,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:39:19,913 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 24 states. [2020-10-14 23:39:22,211 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 153 [2020-10-14 23:39:22,486 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 23:39:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:23,156 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-14 23:39:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:39:23,157 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 38 [2020-10-14 23:39:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:23,157 INFO L225 Difference]: With dead ends: 64 [2020-10-14 23:39:23,158 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:39:23,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=149, Invalid=1573, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:39:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:39:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-14 23:39:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:39:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-14 23:39:23,166 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2020-10-14 23:39:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:23,166 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-14 23:39:23,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:39:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-14 23:39:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:39:23,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:23,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:23,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:39:23,168 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:23,168 INFO L82 PathProgramCache]: Analyzing trace with hash -411808697, now seen corresponding path program 1 times [2020-10-14 23:39:23,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:23,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088888373] [2020-10-14 23:39:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:24,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:24,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:39:24,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-14 23:39:24,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:24,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:39:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:39:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:24,777 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-10-14 23:39:25,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:25,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:25,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:25,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:39:25,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:25,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:25,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:25,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:25,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:25,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 23:39:25,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:25,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:25,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:25,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:25,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:25,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 23:39:25,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:25,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:39:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:39:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:27,469 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 220 DAG size of output: 117 [2020-10-14 23:39:30,336 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 247 DAG size of output: 153 [2020-10-14 23:39:31,731 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2020-10-14 23:39:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:32,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:32,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:32,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:39:32,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:32,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:32,634 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-14 23:39:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:39:32,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088888373] [2020-10-14 23:39:32,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:32,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:39:32,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119569666] [2020-10-14 23:39:32,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:39:32,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:32,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:39:32,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:39:32,661 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 24 states. [2020-10-14 23:39:34,647 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-14 23:39:35,428 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 23:39:48,598 WARN L193 SmtUtils]: Spent 11.52 s on a formula simplification that was a NOOP. DAG size: 234 [2020-10-14 23:39:53,785 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-14 23:39:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:54,156 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-10-14 23:39:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:39:54,157 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 43 [2020-10-14 23:39:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:54,159 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:39:54,159 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:39:54,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:39:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:39:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-14 23:39:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:39:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-14 23:39:54,167 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 43 [2020-10-14 23:39:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:54,168 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-14 23:39:54,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:39:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-14 23:39:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:39:54,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:54,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:54,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:39:54,169 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash -411807023, now seen corresponding path program 1 times [2020-10-14 23:39:54,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:54,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816193567] [2020-10-14 23:39:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:54,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:56,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:56,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:39:56,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-14 23:39:56,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:56,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:39:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:39:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:56,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:56,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:56,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:56,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:56,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:57,203 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-10-14 23:39:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:57,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:57,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:57,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 23:39:57,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:57,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:39:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:39:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:58,179 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-10-14 23:39:58,910 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2020-10-14 23:39:59,826 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2020-10-14 23:40:00,820 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2020-10-14 23:40:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:01,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:01,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:40:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:01,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:02,019 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-14 23:40:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:40:02,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816193567] [2020-10-14 23:40:02,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:02,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:40:02,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298899136] [2020-10-14 23:40:02,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:40:02,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:02,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:40:02,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:40:02,066 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 28 states. [2020-10-14 23:40:03,687 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-14 23:40:03,988 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-14 23:40:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:05,279 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-10-14 23:40:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:40:05,280 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 43 [2020-10-14 23:40:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:05,281 INFO L225 Difference]: With dead ends: 53 [2020-10-14 23:40:05,281 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:40:05,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:40:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:40:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-10-14 23:40:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:40:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-14 23:40:05,290 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 43 [2020-10-14 23:40:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:05,290 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-14 23:40:05,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:40:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-14 23:40:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:40:05,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:05,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:05,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:40:05,292 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:05,292 INFO L82 PathProgramCache]: Analyzing trace with hash -609513598, now seen corresponding path program 2 times [2020-10-14 23:40:05,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:05,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071001276] [2020-10-14 23:40:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:05,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:40:06,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:06,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-14 23:40:06,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:06,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:40:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:40:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:06,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:06,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:06,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:06,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:06,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:06,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:06,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:40:06,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 23:40:06,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:06,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:06,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:40:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:06,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:06,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:06,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:40:06,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:06,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:40:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:06,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:06,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:06,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:06,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:06,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:06,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:06,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:06,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:40:06,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071001276] [2020-10-14 23:40:06,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:06,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:40:06,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893364309] [2020-10-14 23:40:06,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:40:06,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:06,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:40:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:40:06,257 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 8 states. [2020-10-14 23:40:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:06,499 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-14 23:40:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:40:06,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-14 23:40:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:06,506 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:40:06,506 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:40:06,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:40:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:40:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-14 23:40:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:40:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-14 23:40:06,514 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2020-10-14 23:40:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:06,515 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-14 23:40:06,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:40:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-14 23:40:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:40:06,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:06,516 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:06,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:40:06,516 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:06,517 INFO L82 PathProgramCache]: Analyzing trace with hash -609511924, now seen corresponding path program 2 times [2020-10-14 23:40:06,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:06,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048364497] [2020-10-14 23:40:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:10,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:10,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:40:10,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4305 [2020-10-14 23:40:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:10,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:40:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:40:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:11,155 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-14 23:40:11,450 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-10-14 23:40:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:11,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:11,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:11,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:11,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:11,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:12,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:12,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:40:12,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 23:40:12,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:12,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:40:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:12,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:12,762 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-14 23:40:13,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:40:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:13,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:13,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:13,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 23:40:13,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:13,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:13,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:40:13,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:13,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:40:13,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:14,412 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-14 23:40:17,958 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 230 DAG size of output: 157 [2020-10-14 23:40:21,432 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 232 DAG size of output: 182 [2020-10-14 23:40:27,348 WARN L193 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 309 DAG size of output: 248 [2020-10-14 23:40:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:40:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:28,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:40:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:40:28,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048364497] [2020-10-14 23:40:28,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:28,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:40:28,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343977401] [2020-10-14 23:40:28,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:40:28,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:28,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:40:28,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:40:28,522 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 30 states. [2020-10-14 23:40:30,602 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 23:40:31,678 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-14 23:40:39,906 WARN L193 SmtUtils]: Spent 7.73 s on a formula simplification. DAG size of input: 257 DAG size of output: 212 [2020-10-14 23:40:40,894 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-14 23:40:41,356 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-14 23:40:41,580 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-14 23:40:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:42,213 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-10-14 23:40:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:40:42,214 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 45 [2020-10-14 23:40:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:42,215 INFO L225 Difference]: With dead ends: 74 [2020-10-14 23:40:42,215 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:40:42,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=179, Invalid=2271, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:40:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:40:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-10-14 23:40:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:40:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-14 23:40:42,230 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 45 [2020-10-14 23:40:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:42,230 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-14 23:40:42,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:40:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-14 23:40:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:40:42,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:42,231 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] [2020-10-14 23:40:42,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:40:42,232 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:42,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1339011869, now seen corresponding path program 3 times [2020-10-14 23:40:42,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:42,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970052465] [2020-10-14 23:40:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:45,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:40:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-10-14 23:40:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:45,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:40:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:40:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:45,665 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-14 23:40:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:46,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:46,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:40:46,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 23:40:46,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:46,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:40:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:40:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:46,999 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-14 23:40:47,451 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-14 23:40:47,775 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-14 23:40:48,009 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-14 23:40:48,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:40:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:48,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:48,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:48,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 23:40:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:48,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:40:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:40:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:52,620 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2020-10-14 23:40:54,222 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 146 DAG size of output: 111 [2020-10-14 23:40:58,574 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 164 DAG size of output: 135 [2020-10-14 23:41:01,749 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 173 DAG size of output: 157 [2020-10-14 23:41:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:02,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:02,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:02,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:41:02,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:02,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:41:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:03,464 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-14 23:41:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:41:03,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970052465] [2020-10-14 23:41:03,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:03,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:41:03,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913520179] [2020-10-14 23:41:03,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:41:03,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:41:03,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:41:03,498 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 34 states. [2020-10-14 23:41:05,850 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-14 23:41:06,269 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 23:41:06,581 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-14 23:41:07,043 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-14 23:41:07,703 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2020-10-14 23:41:11,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:11,272 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-14 23:41:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:41:11,273 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 50 [2020-10-14 23:41:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:11,273 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:41:11,274 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 23:41:11,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=240, Invalid=2516, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:41:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 23:41:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-14 23:41:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:41:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-14 23:41:11,283 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 50 [2020-10-14 23:41:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:11,283 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-14 23:41:11,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:41:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-14 23:41:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:41:11,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:11,285 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:41:11,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:41:11,285 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:11,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1699738418, now seen corresponding path program 3 times [2020-10-14 23:41:11,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:11,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650052459] [2020-10-14 23:41:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:11,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:11,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:41:11,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:41:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-14 23:41:11,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:11,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:41:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:41:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:41:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:12,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:12,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:12,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:12,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:41:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:41:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:12,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:12,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:41:12,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:12,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:41:12,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:12,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:12,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:12,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:12,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:41:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:41:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:12,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:41:12,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650052459] [2020-10-14 23:41:12,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:12,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:41:12,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099516892] [2020-10-14 23:41:12,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:41:12,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:41:12,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:41:12,398 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 15 states. [2020-10-14 23:41:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:12,993 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2020-10-14 23:41:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:41:12,994 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-14 23:41:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:12,995 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:41:12,995 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:41:12,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:41:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:41:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2020-10-14 23:41:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 23:41:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 23:41:13,005 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 52 [2020-10-14 23:41:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:13,005 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 23:41:13,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:41:13,006 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 23:41:13,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:41:13,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:13,007 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:41:13,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:41:13,007 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:13,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:13,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1699736744, now seen corresponding path program 4 times [2020-10-14 23:41:13,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:13,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927355090] [2020-10-14 23:41:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:17,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:17,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:41:17,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:41:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4832 [2020-10-14 23:41:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:17,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:41:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:41:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:41:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:18,151 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-14 23:41:18,357 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-14 23:41:18,690 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 60 [2020-10-14 23:41:19,155 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2020-10-14 23:41:19,367 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-14 23:41:19,520 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-14 23:41:19,673 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-10-14 23:41:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:20,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:20,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:20,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:20,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:20,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:41:20,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:41:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-14 23:41:20,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:20,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:41:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:41:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:21,039 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-10-14 23:41:21,230 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-10-14 23:41:21,504 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-14 23:41:22,194 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-14 23:41:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:41:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:22,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:22,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:41:22,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 23:41:22,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:22,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:41:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:41:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:41,253 WARN L193 SmtUtils]: Spent 9.32 s on a formula simplification. DAG size of input: 451 DAG size of output: 210 [2020-10-14 23:41:57,670 WARN L193 SmtUtils]: Spent 15.49 s on a formula simplification. DAG size of input: 731 DAG size of output: 250