/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:32:41,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:41,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:41,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:41,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:41,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:41,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:41,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:41,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:41,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:41,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:41,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:41,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:41,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:41,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:41,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:41,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:41,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:41,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:41,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:41,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:41,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:41,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:41,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:41,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:41,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:41,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:41,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:41,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:41,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:41,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:41,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:41,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:41,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:41,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:41,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:41,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:41,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:41,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:41,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:41,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:41,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:32:41,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:41,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:41,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:41,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:41,524 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:41,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:41,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:41,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:41,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:41,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:41,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:41,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:41,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:41,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:41,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:41,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:41,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:41,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:41,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:41,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:41,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:41,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:41,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:41,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:41,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:41,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:41,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:41,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:41,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:41,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:32:42,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:42,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:42,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:42,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:42,061 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:42,063 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 05:32:42,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f832fe44a/99ea55cb346142c88a85c1ebcfa16d7f/FLAGb9c7099c2 [2020-09-25 05:32:42,863 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:42,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 05:32:42,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f832fe44a/99ea55cb346142c88a85c1ebcfa16d7f/FLAGb9c7099c2 [2020-09-25 05:32:43,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f832fe44a/99ea55cb346142c88a85c1ebcfa16d7f [2020-09-25 05:32:43,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:43,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:43,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:43,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:43,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:43,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656a7a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43, skipping insertion in model container [2020-09-25 05:32:43,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:43,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:43,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:43,685 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:43,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:43,800 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:43,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43 WrapperNode [2020-09-25 05:32:43,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:43,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:43,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:43,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:43,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... [2020-09-25 05:32:43,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:43,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:43,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:43,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:43,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 05:32:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 05:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 05:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 05:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 05:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 05:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 05:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 05:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:32:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:32:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:32:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:32:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:32:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:32:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:32:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:32:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:32:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:32:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:32:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:32:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:32:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:32:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:32:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:32:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:32:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:32:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:32:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:32:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:32:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:32:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:32:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:32:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:32:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:32:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:32:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:32:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:32:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:32:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:32:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:32:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:32:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:32:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:32:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:32:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:32:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:32:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:32:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:32:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:32:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 05:32:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:32:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:32:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:32:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:32:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:32:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:32:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:32:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:32:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:32:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:32:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:32:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:32:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:32:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:32:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:32:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:32:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:32:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:32:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:32:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:32:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:32:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:32:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:32:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:32:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:32:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:32:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:32:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:32:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:32:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:32:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:32:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:32:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:32:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:32:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:32:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:32:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:32:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:32:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:32:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:32:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:32:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:32:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:32:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:32:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:32:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:32:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:32:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 05:32:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 05:32:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:32:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:32:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:32:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 05:32:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 05:32:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:32:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:32:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:32:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 05:32:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:32:44,348 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 05:32:44,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:44,610 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 05:32:44,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:44 BoogieIcfgContainer [2020-09-25 05:32:44,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:44,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:44,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:44,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:44,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:43" (1/3) ... [2020-09-25 05:32:44,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba70990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:44, skipping insertion in model container [2020-09-25 05:32:44,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:43" (2/3) ... [2020-09-25 05:32:44,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba70990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:44, skipping insertion in model container [2020-09-25 05:32:44,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:44" (3/3) ... [2020-09-25 05:32:44,626 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 05:32:44,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:44,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:32:44,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:32:44,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:44,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:44,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:44,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:44,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:44,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:44,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:44,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:44,739 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 05:32:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:32:44,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:44,750 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] [2020-09-25 05:32:44,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:44,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 05:32:44,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:44,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894133892] [2020-09-25 05:32:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:45,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:32:45,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:45,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-09-25 05:32:45,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:45,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 05:32:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:32:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:45,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:45,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:45,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:32:45,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:45,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:32:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:32:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:45,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:45,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:32:45,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:45,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:45,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894133892] [2020-09-25 05:32:46,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:46,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:32:46,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901492257] [2020-09-25 05:32:46,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:32:46,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:46,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:32:46,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:32:46,040 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-09-25 05:32:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:46,313 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-25 05:32:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:32:46,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 05:32:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:46,331 INFO L225 Difference]: With dead ends: 118 [2020-09-25 05:32:46,331 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 05:32:46,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 05:32:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-09-25 05:32:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 05:32:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-09-25 05:32:46,402 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-09-25 05:32:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:46,404 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-09-25 05:32:46,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:32:46,404 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-09-25 05:32:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:32:46,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:46,407 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] [2020-09-25 05:32:46,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:32:46,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:46,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-09-25 05:32:46,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:46,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114085811] [2020-09-25 05:32:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:47,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:32:47,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-09-25 05:32:47,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:47,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:32:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:32:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:32:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:47,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:47,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:32:47,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:47,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:32:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:47,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:47,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:47,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:32:47,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:47,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:32:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:32:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:47,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114085811] [2020-09-25 05:32:47,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:47,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:47,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550640239] [2020-09-25 05:32:47,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:47,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:47,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:47,437 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-09-25 05:32:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:47,747 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-09-25 05:32:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:47,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 05:32:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:47,751 INFO L225 Difference]: With dead ends: 74 [2020-09-25 05:32:47,751 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 05:32:47,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 05:32:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-09-25 05:32:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 05:32:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 05:32:47,793 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-09-25 05:32:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:47,793 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 05:32:47,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 05:32:47,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 05:32:47,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:47,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:47,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:32:47,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:47,800 INFO L82 PathProgramCache]: Analyzing trace with hash 278069346, now seen corresponding path program 1 times [2020-09-25 05:32:47,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:47,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785820970] [2020-09-25 05:32:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:32:52,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:32:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:32:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:32:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:32:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:52,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:52,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:32:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:52,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:32:52,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:32:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:32:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:32:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:53,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:32:53,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:53,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:32:53,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:53,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:32:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:32:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:53,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785820970] [2020-09-25 05:32:53,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:53,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:32:53,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966671609] [2020-09-25 05:32:53,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:32:53,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:53,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:32:53,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:53,070 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 9 states. [2020-09-25 05:32:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:53,415 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-09-25 05:32:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:32:53,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 05:32:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:53,418 INFO L225 Difference]: With dead ends: 76 [2020-09-25 05:32:53,418 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 05:32:53,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:32:53,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 05:32:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2020-09-25 05:32:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 05:32:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-25 05:32:53,436 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 45 [2020-09-25 05:32:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:53,438 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-25 05:32:53,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:32:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-25 05:32:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:32:53,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:53,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:32:53,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:32:53,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash -512695656, now seen corresponding path program 2 times [2020-09-25 05:32:53,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:53,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000492350] [2020-09-25 05:32:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:32:58,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:32:58,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:32:58,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:32:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:32:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:58,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:32:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:32:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:32:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:32:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:32:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:32:58,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:32:58,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:32:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 05:32:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:32:58,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:32:58,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:32:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 05:32:58,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000492350] [2020-09-25 05:32:58,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:58,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 05:32:58,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663517015] [2020-09-25 05:32:58,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:32:58,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:58,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:32:58,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:58,699 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 9 states. [2020-09-25 05:32:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:58,986 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2020-09-25 05:32:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:32:58,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-09-25 05:32:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:58,988 INFO L225 Difference]: With dead ends: 115 [2020-09-25 05:32:58,988 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 05:32:58,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:32:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 05:32:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2020-09-25 05:32:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 05:32:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 05:32:58,997 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 63 [2020-09-25 05:32:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:58,998 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 05:32:58,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:32:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 05:32:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 05:32:59,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:59,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:59,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:32:59,000 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash -182223992, now seen corresponding path program 1 times [2020-09-25 05:32:59,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:59,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148358901] [2020-09-25 05:32:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:04,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:33:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:33:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:04,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:33:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:04,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:04,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:33:04,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:04,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:04,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:33:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:04,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:33:04,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 05:33:04,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:04,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:33:04,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:04,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 05:33:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:04,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:04,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:33:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:04,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:33:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 05:33:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:04,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:04,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:33:04,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:04,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:33:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 05:33:04,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148358901] [2020-09-25 05:33:04,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:04,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:33:04,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20363336] [2020-09-25 05:33:04,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:33:04,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:04,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:33:04,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:33:04,360 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 10 states. [2020-09-25 05:33:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:04,751 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 05:33:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:33:04,756 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-09-25 05:33:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:04,758 INFO L225 Difference]: With dead ends: 128 [2020-09-25 05:33:04,758 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 05:33:04,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 05:33:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-09-25 05:33:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 05:33:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 05:33:04,777 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 75 [2020-09-25 05:33:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:04,778 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 05:33:04,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:33:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 05:33:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 05:33:04,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:04,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:33:04,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:33:04,780 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:04,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:04,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1955081336, now seen corresponding path program 2 times [2020-09-25 05:33:04,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:04,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513524065] [2020-09-25 05:33:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:09,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:33:09,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:09,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:33:09,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:09,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:09,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:09,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:33:09,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:33:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:09,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:09,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:09,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:09,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:33:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:10,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:33:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 05:33:10,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:10,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:33:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:33:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:33:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:33:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:10,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:33:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 05:33:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:10,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:10,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:33:10,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:10,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:33:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 05:33:10,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513524065] [2020-09-25 05:33:10,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:10,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:33:10,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723872563] [2020-09-25 05:33:10,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:33:10,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:10,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:33:10,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:33:10,243 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 8 states. [2020-09-25 05:33:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:10,455 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2020-09-25 05:33:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:33:10,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 05:33:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:10,457 INFO L225 Difference]: With dead ends: 130 [2020-09-25 05:33:10,457 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 05:33:10,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:33:10,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 05:33:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-09-25 05:33:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 05:33:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-09-25 05:33:10,475 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 87 [2020-09-25 05:33:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:10,476 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-09-25 05:33:10,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:33:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-09-25 05:33:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 05:33:10,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:10,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:33:10,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:33:10,478 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:10,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1865398913, now seen corresponding path program 1 times [2020-09-25 05:33:10,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:10,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964540138] [2020-09-25 05:33:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:15,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 05:33:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:33:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:15,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 05:33:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:33:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:15,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:33:15,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:15,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:33:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:15,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:33:15,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:33:15,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:15,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:15,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:33:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:15,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:15,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:15,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:15,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:15,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:15,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:33:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 05:33:15,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:15,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:33:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 05:33:15,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964540138] [2020-09-25 05:33:15,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:15,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:33:15,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496360554] [2020-09-25 05:33:15,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:33:15,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:15,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:33:15,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:33:15,989 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 10 states. [2020-09-25 05:33:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:16,665 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-09-25 05:33:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:33:16,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-25 05:33:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:16,668 INFO L225 Difference]: With dead ends: 114 [2020-09-25 05:33:16,668 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 05:33:16,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:33:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 05:33:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2020-09-25 05:33:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 05:33:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-25 05:33:16,688 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 88 [2020-09-25 05:33:16,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:16,691 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-25 05:33:16,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:33:16,692 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-25 05:33:16,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 05:33:16,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:16,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:16,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:33:16,702 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:16,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:16,703 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 05:33:16,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:16,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655071478] [2020-09-25 05:33:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:16,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 05:33:22,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5355 [2020-09-25 05:33:22,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 05:33:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:33:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:33:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:22,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:33:22,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:33:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:33:22,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-25 05:33:22,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:33:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:33:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:33:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:33:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:33:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:33:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:33:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:33:23,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:33:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:23,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:33:23,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 05:33:23,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655071478] [2020-09-25 05:33:23,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:23,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 05:33:23,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721392769] [2020-09-25 05:33:23,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 05:33:23,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:23,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 05:33:23,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:33:23,108 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 19 states. [2020-09-25 05:33:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:24,616 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2020-09-25 05:33:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 05:33:24,621 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-09-25 05:33:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:24,622 INFO L225 Difference]: With dead ends: 122 [2020-09-25 05:33:24,622 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 05:33:24,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 05:33:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 05:33:24,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 05:33:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 05:33:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 05:33:24,633 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 89 [2020-09-25 05:33:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:24,635 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 05:33:24,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 05:33:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 05:33:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 05:33:24,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:24,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:33:24,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:33:24,639 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:24,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 1 times [2020-09-25 05:33:24,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:24,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333595426] [2020-09-25 05:33:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking...