/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:07:40,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:07:40,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:07:40,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:07:40,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:07:40,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:07:40,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:07:40,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:07:40,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:07:40,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:07:40,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:07:40,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:07:40,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:07:40,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:07:41,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:07:41,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:07:41,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:07:41,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:07:41,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:07:41,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:07:41,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:07:41,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:07:41,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:07:41,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:07:41,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:07:41,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:07:41,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:07:41,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:07:41,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:07:41,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:07:41,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:07:41,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:07:41,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:07:41,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:07:41,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:07:41,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:07:41,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:07:41,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:07:41,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:07:41,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:07:41,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:07:41,046 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 05:07:41,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:07:41,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:07:41,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:07:41,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:07:41,088 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:07:41,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:07:41,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:07:41,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:07:41,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:07:41,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:07:41,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:07:41,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:07:41,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:07:41,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:07:41,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:07:41,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:07:41,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:07:41,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:07:41,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:07:41,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:07:41,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:07:41,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:07:41,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:07:41,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:07:41,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:07:41,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:07:41,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:07:41,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:07:41,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:07:41,094 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:07:41,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:07:41,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:07:41,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:07:41,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:07:41,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:07:41,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_equal.i [2020-10-14 05:07:41,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55bd8641/95e1c43c50f34ebfa8948aa38a9be256/FLAGa7dcbc561 [2020-10-14 05:07:41,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:07:42,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_prepend_equal.i [2020-10-14 05:07:42,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55bd8641/95e1c43c50f34ebfa8948aa38a9be256/FLAGa7dcbc561 [2020-10-14 05:07:42,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55bd8641/95e1c43c50f34ebfa8948aa38a9be256 [2020-10-14 05:07:42,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:07:42,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:07:42,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:07:42,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:07:42,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:07:42,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4e4768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42, skipping insertion in model container [2020-10-14 05:07:42,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:07:42,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:07:42,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:07:42,800 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:07:42,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:07:42,910 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:07:42,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42 WrapperNode [2020-10-14 05:07:42,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:07:42,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:07:42,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:07:42,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:07:42,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (1/1) ... [2020-10-14 05:07:42,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:07:42,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:07:42,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:07:42,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:07:42,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (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 05:07:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:07:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:07:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:07:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:07:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:07:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:07:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-14 05:07:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-14 05:07:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2020-10-14 05:07:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:07:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:07:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:07:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:07:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:07:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:07:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:07:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:07:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:07:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:07:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:07:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:07:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:07:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:07:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:07:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:07:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:07:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:07:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:07:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:07:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:07:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:07:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:07:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:07:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:07:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:07:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:07:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:07:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:07:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:07:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:07:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:07:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:07:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:07:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:07:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:07:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:07:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:07:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:07:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:07:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:07:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:07:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:07:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:07:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:07:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:07:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:07:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:07:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:07:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:07:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:07:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:07:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:07:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:07:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:07:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:07:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:07:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:07:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:07:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:07:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:07:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:07:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:07:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:07:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:07:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:07:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:07:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:07:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:07:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:07:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:07:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:07:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:07:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:07:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:07:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:07:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:07:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:07:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:07:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:07:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:07:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:07:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:07:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:07:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:07:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:07:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:07:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:07:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:07:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:07:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:07:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:07:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:07:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:07:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:07:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:07:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:07:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:07:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:07:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:07:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:07:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:07:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:07:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:07:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:07:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:07:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:07:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:07:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:07:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:07:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:07:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:07:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-14 05:07:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-14 05:07:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:07:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:07:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2020-10-14 05:07:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:07:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:07:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:07:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:07:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:07:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:07:43,518 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:07:43,684 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:07:43,685 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 05:07:43,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:07:43 BoogieIcfgContainer [2020-10-14 05:07:43,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:07:43,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:07:43,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:07:43,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:07:43,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:07:42" (1/3) ... [2020-10-14 05:07:43,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d946735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:07:43, skipping insertion in model container [2020-10-14 05:07:43,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:42" (2/3) ... [2020-10-14 05:07:43,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d946735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:07:43, skipping insertion in model container [2020-10-14 05:07:43,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:07:43" (3/3) ... [2020-10-14 05:07:43,699 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2020-10-14 05:07:43,710 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:07:43,720 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:07:43,734 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:07:43,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:07:43,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:07:43,759 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:07:43,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:07:43,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:07:43,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:07:43,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:07:43,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:07:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-14 05:07:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:07:43,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:43,791 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] [2020-10-14 05:07:43,792 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:43,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1196981672, now seen corresponding path program 1 times [2020-10-14 05:07:43,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:43,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089185100] [2020-10-14 05:07:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:44,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:45,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 05:07:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-14 05:07:45,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:45,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 05:07:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:07:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:45,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:07:45,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:45,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:07:45,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:45,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:45,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:45,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:45,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:07:45,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:45,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:07:45,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:07:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:45,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:07:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:07:45,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:45,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:45,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:07:45,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:45,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:07:45,883 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 05:07:45,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089185100] [2020-10-14 05:07:45,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:45,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:07:45,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282156089] [2020-10-14 05:07:45,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:07:45,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:45,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:07:45,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:07:45,923 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-10-14 05:07:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:46,245 INFO L93 Difference]: Finished difference Result 93 states and 116 transitions. [2020-10-14 05:07:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:07:46,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-14 05:07:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:46,263 INFO L225 Difference]: With dead ends: 93 [2020-10-14 05:07:46,264 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 05:07:46,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:07:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 05:07:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-10-14 05:07:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 05:07:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-14 05:07:46,338 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2020-10-14 05:07:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:46,339 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-14 05:07:46,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:07:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-14 05:07:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:07:46,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:46,343 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] [2020-10-14 05:07:46,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:07:46,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1196990321, now seen corresponding path program 1 times [2020-10-14 05:07:46,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:46,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809533462] [2020-10-14 05:07:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 05:07:49,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:07:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3603 [2020-10-14 05:07:49,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:50,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:50,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:07:50,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:50,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:50,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:50,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:50,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:50,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:50,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:07:50,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:50,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:07:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:50,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:07:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:07:50,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:50,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:07:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:50,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:07:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:50,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:07:50,244 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 05:07:50,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809533462] [2020-10-14 05:07:50,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:50,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:07:50,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446110698] [2020-10-14 05:07:50,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:07:50,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:50,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:07:50,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:07:50,257 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2020-10-14 05:07:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:50,519 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-14 05:07:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:07:50,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-14 05:07:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:50,522 INFO L225 Difference]: With dead ends: 64 [2020-10-14 05:07:50,523 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 05:07:50,524 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 05:07:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 05:07:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-10-14 05:07:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 05:07:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 05:07:50,536 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2020-10-14 05:07:50,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:50,536 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 05:07:50,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:07:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 05:07:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 05:07:50,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:50,538 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] [2020-10-14 05:07:50,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:07:50,539 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:50,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1608179635, now seen corresponding path program 1 times [2020-10-14 05:07:50,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:50,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686583512] [2020-10-14 05:07:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:55,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:07:55,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:07:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4567 [2020-10-14 05:07:55,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:55,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:07:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:07:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:55,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:55,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:55,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:55,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:55,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:55,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:07:55,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:07:55,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:55,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:07:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:55,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:07:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:55,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:07:55,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:55,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:07:55,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:55,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:07:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:55,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:55,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:55,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:07:55,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:55,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:55,248 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 05:07:55,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686583512] [2020-10-14 05:07:55,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:55,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:07:55,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185374697] [2020-10-14 05:07:55,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:07:55,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:55,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:07:55,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:07:55,251 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-14 05:07:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:55,406 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-10-14 05:07:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:07:55,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-14 05:07:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:55,408 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:07:55,408 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 05:07:55,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:07:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 05:07:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-14 05:07:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:07:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-14 05:07:55,424 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2020-10-14 05:07:55,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:55,424 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-14 05:07:55,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:07:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-14 05:07:55,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 05:07:55,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:55,428 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] [2020-10-14 05:07:55,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:07:55,428 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:55,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1474166129, now seen corresponding path program 1 times [2020-10-14 05:07:55,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:55,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611529742] [2020-10-14 05:07:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:08:00,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:08:00,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:08:00,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:00,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:08:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:00,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:00,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:08:00,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:00,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:00,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:08:00,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:08:00,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:00,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:08:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:08:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:00,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:08:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:00,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:08:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:00,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:08:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:00,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:00,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:00,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:08:00,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:00,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:00,627 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 05:08:00,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611529742] [2020-10-14 05:08:00,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:00,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:08:00,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349030294] [2020-10-14 05:08:00,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:08:00,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:00,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:08:00,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:08:00,634 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-10-14 05:08:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:00,864 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-14 05:08:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:08:00,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-14 05:08:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:00,866 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:08:00,866 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 05:08:00,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:08:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 05:08:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-14 05:08:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:08:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-14 05:08:00,883 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 35 [2020-10-14 05:08:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:00,884 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-14 05:08:00,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:08:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-14 05:08:00,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:08:00,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:00,886 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] [2020-10-14 05:08:00,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:08:00,886 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:00,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:00,887 INFO L82 PathProgramCache]: Analyzing trace with hash -2012413935, now seen corresponding path program 1 times [2020-10-14 05:08:00,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:00,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669048780] [2020-10-14 05:08:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:03,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 05:08:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:08:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2585 [2020-10-14 05:08:03,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:03,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:08:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:08:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:08:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:03,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:08:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:03,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:08:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:03,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:08:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:03,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:03,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:03,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 05:08:03,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:03,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:08:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:03,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:03,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:03,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:08:03,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:03,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:03,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669048780] [2020-10-14 05:08:03,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:08:03,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:08:03,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320631830] [2020-10-14 05:08:03,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:08:03,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:03,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:08:03,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:08:03,832 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 12 states. [2020-10-14 05:08:04,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:04,105 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-14 05:08:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:08:04,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-14 05:08:04,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:04,106 INFO L225 Difference]: With dead ends: 49 [2020-10-14 05:08:04,107 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 05:08:04,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:08:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 05:08:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-14 05:08:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 05:08:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 05:08:04,114 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 40 [2020-10-14 05:08:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:04,115 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 05:08:04,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:08:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 05:08:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:08:04,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:04,116 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] [2020-10-14 05:08:04,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:08:04,116 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:04,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2012412261, now seen corresponding path program 1 times [2020-10-14 05:08:04,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:04,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638008813] [2020-10-14 05:08:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 05:08:04,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-14 05:08:04,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:08:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:08:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:04,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:04,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 05:08:04,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:05,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:05,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:05,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 05:08:05,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:05,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:08:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:05,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:08:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:05,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:08:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:08:05,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638008813] [2020-10-14 05:08:05,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:08:05,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-14 05:08:05,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149756639] [2020-10-14 05:08:05,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:08:05,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:08:05,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:08:05,780 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 20 states. [2020-10-14 05:08:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:06,657 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-14 05:08:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:08:06,657 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2020-10-14 05:08:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:06,659 INFO L225 Difference]: With dead ends: 49 [2020-10-14 05:08:06,659 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:08:06,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:08:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:08:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-14 05:08:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:08:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-14 05:08:06,668 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 40 [2020-10-14 05:08:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:06,668 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-14 05:08:06,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:08:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-14 05:08:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:08:06,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:06,675 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] [2020-10-14 05:08:06,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:08:06,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:06,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1192855508, now seen corresponding path program 1 times [2020-10-14 05:08:06,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:06,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466188737] [2020-10-14 05:08:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:06,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:08:08,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:08,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1851 [2020-10-14 05:08:08,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:08:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:08:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:08,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:08,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:08:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:08,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 05:08:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:09,979 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 94 [2020-10-14 05:08:10,177 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2020-10-14 05:08:10,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:10,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:08:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:10,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:10,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466188737] [2020-10-14 05:08:10,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:10,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:08:10,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108452009] [2020-10-14 05:08:10,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:08:10,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:10,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:08:10,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:08:10,271 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 12 states. [2020-10-14 05:08:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:10,828 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-10-14 05:08:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:08:10,829 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-14 05:08:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:10,830 INFO L225 Difference]: With dead ends: 63 [2020-10-14 05:08:10,831 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:08:10,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:08:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:08:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2020-10-14 05:08:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 05:08:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 05:08:10,840 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 42 [2020-10-14 05:08:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:10,840 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 05:08:10,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:08:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 05:08:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:08:10,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:10,841 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] [2020-10-14 05:08:10,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:08:10,842 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:10,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1192853834, now seen corresponding path program 1 times [2020-10-14 05:08:10,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:10,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422960713] [2020-10-14 05:08:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:12,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:12,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:08:12,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-14 05:08:12,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:12,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:08:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:08:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:12,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:12,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:12,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:12,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:12,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:12,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:12,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:12,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:12,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 05:08:12,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:12,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:08:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:08:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:12,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:12,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:12,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 05:08:12,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:12,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:08:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:13,332 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-10-14 05:08:13,584 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-14 05:08:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:13,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:08:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:13,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:08:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:14,082 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-14 05:08:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:08:14,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422960713] [2020-10-14 05:08:14,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:14,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:08:14,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852646292] [2020-10-14 05:08:14,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:08:14,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:14,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:08:14,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:08:14,099 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 27 states. [2020-10-14 05:08:15,691 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 05:08:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:16,124 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-10-14 05:08:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:08:16,125 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 42 [2020-10-14 05:08:16,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:16,126 INFO L225 Difference]: With dead ends: 62 [2020-10-14 05:08:16,126 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:08:16,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:08:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:08:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-10-14 05:08:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:08:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-14 05:08:16,137 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 42 [2020-10-14 05:08:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:16,137 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-14 05:08:16,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:08:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-14 05:08:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:08:16,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:16,138 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] [2020-10-14 05:08:16,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:08:16,139 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:16,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1585882518, now seen corresponding path program 1 times [2020-10-14 05:08:16,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:16,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741996917] [2020-10-14 05:08:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:18,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:08:18,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:08:18,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2226 [2020-10-14 05:08:18,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:18,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:08:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:08:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:18,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:18,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:08:18,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:18,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:18,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:18,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:18,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 05:08:18,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:18,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:18,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:18,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 05:08:18,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:18,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:08:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:19,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:19,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:19,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:08:19,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:19,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:08:19,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741996917] [2020-10-14 05:08:19,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:19,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:08:19,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087581636] [2020-10-14 05:08:19,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:08:19,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:19,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:08:19,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:08:19,251 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 20 states. [2020-10-14 05:08:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:20,090 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-14 05:08:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:08:20,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2020-10-14 05:08:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:20,092 INFO L225 Difference]: With dead ends: 90 [2020-10-14 05:08:20,093 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:08:20,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:08:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:08:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-14 05:08:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 05:08:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-14 05:08:20,104 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 42 [2020-10-14 05:08:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:20,104 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-14 05:08:20,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:08:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-14 05:08:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:08:20,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:20,106 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] [2020-10-14 05:08:20,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:08:20,106 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:20,106 INFO L82 PathProgramCache]: Analyzing trace with hash 423777671, now seen corresponding path program 2 times [2020-10-14 05:08:20,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:20,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008879513] [2020-10-14 05:08:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:08:21,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-10-14 05:08:21,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:21,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:08:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 05:08:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:21,847 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-14 05:08:22,162 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2020-10-14 05:08:22,431 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 32 [2020-10-14 05:08:22,643 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 20 [2020-10-14 05:08:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:22,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:22,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:22,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:22,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:22,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 05:08:22,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:22,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:08:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:23,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:23,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:23,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 05:08:23,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:23,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:08:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:23,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:24,747 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 176 DAG size of output: 125 [2020-10-14 05:08:25,668 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 123 [2020-10-14 05:08:25,906 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-14 05:08:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:25,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:25,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:25,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:08:25,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:25,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:08:26,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008879513] [2020-10-14 05:08:26,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:26,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:08:26,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009875278] [2020-10-14 05:08:26,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:08:26,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:26,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:08:26,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:08:26,229 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 25 states. [2020-10-14 05:08:27,710 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-14 05:08:29,043 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 162 [2020-10-14 05:08:29,760 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-14 05:08:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:30,096 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-10-14 05:08:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:08:30,097 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 44 [2020-10-14 05:08:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:30,098 INFO L225 Difference]: With dead ends: 56 [2020-10-14 05:08:30,099 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 05:08:30,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:08:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 05:08:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-10-14 05:08:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 05:08:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-14 05:08:30,114 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2020-10-14 05:08:30,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:30,117 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-14 05:08:30,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:08:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-14 05:08:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:08:30,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:30,118 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] [2020-10-14 05:08:30,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:08:30,119 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:30,119 INFO L82 PathProgramCache]: Analyzing trace with hash 423779345, now seen corresponding path program 2 times [2020-10-14 05:08:30,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:30,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279298284] [2020-10-14 05:08:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:31,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:08:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:31,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:31,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:31,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:08:31,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:31,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:32,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 05:08:32,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:08:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:32,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:32,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 05:08:32,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:08:32,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:32,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:32,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:33,390 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-14 05:08:34,052 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 79 [2020-10-14 05:08:34,659 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 81 [2020-10-14 05:08:35,377 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-10-14 05:08:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:35,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:35,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:35,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:35,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 05:08:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:35,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:08:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:36,176 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-14 05:08:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:08:36,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279298284] [2020-10-14 05:08:36,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:36,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:08:36,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176564198] [2020-10-14 05:08:36,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:08:36,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:36,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:08:36,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:08:36,200 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 29 states. [2020-10-14 05:08:38,460 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-10-14 05:08:38,701 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-10-14 05:08:39,061 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-14 05:08:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:39,437 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-10-14 05:08:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:08:39,438 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2020-10-14 05:08:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:39,439 INFO L225 Difference]: With dead ends: 52 [2020-10-14 05:08:39,440 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:08:39,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:08:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:08:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-14 05:08:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 05:08:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-14 05:08:39,448 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 44 [2020-10-14 05:08:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:39,448 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-14 05:08:39,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:08:39,448 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-14 05:08:39,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:08:39,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:39,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:39,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:08:39,450 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:39,450 INFO L82 PathProgramCache]: Analyzing trace with hash -769898462, now seen corresponding path program 3 times [2020-10-14 05:08:39,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:39,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779678105] [2020-10-14 05:08:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:39,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:39,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:39,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:08:39,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-14 05:08:39,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:39,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:08:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:40,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:40,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:40,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:40,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:40,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:40,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:40,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:40,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:40,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:40,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:08:40,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:40,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:08:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:40,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:40,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:08:40,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:40,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:40,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779678105] [2020-10-14 05:08:40,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:40,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:08:40,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103215322] [2020-10-14 05:08:40,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:08:40,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:40,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:08:40,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:08:40,175 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 9 states. [2020-10-14 05:08:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:40,411 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-10-14 05:08:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:08:40,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-14 05:08:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:40,412 INFO L225 Difference]: With dead ends: 55 [2020-10-14 05:08:40,413 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 05:08:40,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:08:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 05:08:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-14 05:08:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 05:08:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-14 05:08:40,422 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2020-10-14 05:08:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:40,422 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-14 05:08:40,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:08:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-14 05:08:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:08:40,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:40,423 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:40,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:08:40,424 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -769896788, now seen corresponding path program 3 times [2020-10-14 05:08:40,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:40,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899927971] [2020-10-14 05:08:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:45,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:45,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:08:45,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:08:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4621 [2020-10-14 05:08:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:08:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:08:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:45,756 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 72 [2020-10-14 05:08:46,334 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2020-10-14 05:08:46,779 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 52 [2020-10-14 05:08:47,202 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 49 [2020-10-14 05:08:47,463 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 55 [2020-10-14 05:08:47,616 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-10-14 05:08:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:47,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:47,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 05:08:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:48,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:08:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:49,287 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 58 [2020-10-14 05:08:49,649 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-14 05:08:50,092 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-10-14 05:08:50,542 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-10-14 05:08:50,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:50,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:50,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:50,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:08:50,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 05:08:50,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:50,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:08:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:58,399 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 118 [2020-10-14 05:09:06,817 WARN L193 SmtUtils]: Spent 7.07 s on a formula simplification. DAG size of input: 272 DAG size of output: 183