/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:56:02,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:56:02,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:56:02,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:56:02,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:56:02,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:56:02,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:56:02,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:56:02,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:56:02,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:56:02,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:56:02,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:56:02,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:56:02,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:56:02,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:56:02,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:56:02,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:56:02,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:56:02,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:56:02,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:56:02,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:56:02,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:56:02,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:56:02,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:56:02,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:56:02,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:56:02,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:56:02,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:56:02,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:56:02,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:56:02,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:56:02,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:56:02,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:56:02,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:56:02,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:56:02,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:56:02,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:56:02,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:56:02,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:56:02,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:56:02,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:56:02,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:56:02,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:56:02,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:56:02,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:56:02,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:56:02,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:56:02,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:56:02,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:56:02,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:56:02,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:56:02,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:56:02,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:56:02,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:56:02,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:56:02,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:56:02,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:56:02,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:56:02,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:56:02,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:56:02,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:56:02,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:56:02,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:56:02,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:56:02,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:56:02,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:56:02,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:56:02,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:56:02,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:56:02,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:56:02,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:56:02,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:56:02,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:56:02,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:56:02,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:56:02,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:56:02,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:56:02,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2020-10-27 19:56:02,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccadc0fc4/5cc653f2fa6f4c95bb9a5086ebb55bdf/FLAG8ed378777 [2020-10-27 19:56:03,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:56:03,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2020-10-27 19:56:03,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccadc0fc4/5cc653f2fa6f4c95bb9a5086ebb55bdf/FLAG8ed378777 [2020-10-27 19:56:03,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccadc0fc4/5cc653f2fa6f4c95bb9a5086ebb55bdf [2020-10-27 19:56:03,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:56:03,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:56:03,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:56:03,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:56:03,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:56:03,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:56:03" (1/1) ... [2020-10-27 19:56:03,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6095f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:03, skipping insertion in model container [2020-10-27 19:56:03,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:56:03" (1/1) ... [2020-10-27 19:56:03,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:56:04,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:56:04,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:56:04,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:56:04,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:56:04,881 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:56:04,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04 WrapperNode [2020-10-27 19:56:04,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:56:04,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:56:04,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:56:04,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:56:04,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... [2020-10-27 19:56:04,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... [2020-10-27 19:56:04,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... [2020-10-27 19:56:04,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... [2020-10-27 19:56:04,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... [2020-10-27 19:56:04,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... [2020-10-27 19:56:04,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... [2020-10-27 19:56:04,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:56:04,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:56:04,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:56:04,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:56:04,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:56:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:56:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:56:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:56:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:56:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:56:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 19:56:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-27 19:56:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-10-27 19:56:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-27 19:56:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-27 19:56:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-27 19:56:05,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-27 19:56:05,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-27 19:56:05,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-27 19:56:05,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-10-27 19:56:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-10-27 19:56:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-10-27 19:56:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-10-27 19:56:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-10-27 19:56:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-10-27 19:56:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-27 19:56:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-10-27 19:56:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-10-27 19:56:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-27 19:56:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-27 19:56:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:56:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:56:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:56:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:56:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:56:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:56:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:56:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:56:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:56:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:56:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:56:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:56:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:56:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:56:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:56:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:56:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:56:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:56:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:56:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:56:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:56:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:56:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:56:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:56:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:56:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:56:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:56:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:56:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:56:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:56:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:56:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:56:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:56:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:56:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:56:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:56:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:56:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:56:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:56:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:56:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:56:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:56:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:56:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:56:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:56:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:56:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 19:56:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:56:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:56:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 19:56:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:56:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:56:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 19:56:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:56:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:56:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:56:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:56:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:56:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:56:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:56:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:56:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:56:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:56:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:56:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:56:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:56:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:56:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:56:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:56:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:56:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:56:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:56:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:56:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:56:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:56:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:56:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:56:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:56:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:56:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:56:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:56:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:56:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:56:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:56:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:56:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:56:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:56:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:56:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:56:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:56:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:56:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:56:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:56:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:56:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:56:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:56:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 19:56:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:56:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-27 19:56:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:56:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-10-27 19:56:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-27 19:56:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:56:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-27 19:56:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-27 19:56:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-27 19:56:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:56:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-27 19:56:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-27 19:56:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-10-27 19:56:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-10-27 19:56:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-10-27 19:56:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-10-27 19:56:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-10-27 19:56:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-10-27 19:56:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-27 19:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-10-27 19:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-10-27 19:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-27 19:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-27 19:56:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:56:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:56:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:56:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 19:56:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:56:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:56:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:56:06,100 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:56:06,100 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 19:56:06,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:56:06 BoogieIcfgContainer [2020-10-27 19:56:06,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:56:06,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:56:06,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:56:06,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:56:06,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:56:03" (1/3) ... [2020-10-27 19:56:06,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32149dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:56:06, skipping insertion in model container [2020-10-27 19:56:06,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:04" (2/3) ... [2020-10-27 19:56:06,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32149dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:56:06, skipping insertion in model container [2020-10-27 19:56:06,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:56:06" (3/3) ... [2020-10-27 19:56:06,111 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2020-10-27 19:56:06,125 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:56:06,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:56:06,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:56:06,200 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:56:06,200 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:56:06,200 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:56:06,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:56:06,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:56:06,201 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:56:06,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:56:06,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:56:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2020-10-27 19:56:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:56:06,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:06,238 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] [2020-10-27 19:56:06,238 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash -338212697, now seen corresponding path program 1 times [2020-10-27 19:56:06,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:06,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549125470] [2020-10-27 19:56:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:07,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 19:56:07,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:56:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-27 19:56:07,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:56:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 19:56:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:56:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:56:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:08,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:08,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:56:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:08,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:08,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 19:56:08,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:56:08,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:08,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:56:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:08,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:08,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:56:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:56:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:56:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:56:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549125470] [2020-10-27 19:56:08,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:08,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:56:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420504752] [2020-10-27 19:56:08,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:56:08,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:08,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:56:08,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:56:08,103 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 4 states. [2020-10-27 19:56:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:09,033 INFO L93 Difference]: Finished difference Result 250 states and 328 transitions. [2020-10-27 19:56:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:56:09,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 19:56:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:09,049 INFO L225 Difference]: With dead ends: 250 [2020-10-27 19:56:09,049 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 19:56:09,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:56:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 19:56:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 104. [2020-10-27 19:56:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 19:56:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2020-10-27 19:56:09,120 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 26 [2020-10-27 19:56:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:09,121 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2020-10-27 19:56:09,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:56:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2020-10-27 19:56:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:56:09,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:09,124 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] [2020-10-27 19:56:09,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:56:09,124 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:09,125 INFO L82 PathProgramCache]: Analyzing trace with hash 556462749, now seen corresponding path program 1 times [2020-10-27 19:56:09,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:09,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954883618] [2020-10-27 19:56:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:09,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:09,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 19:56:09,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:56:09,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-27 19:56:09,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:09,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:56:09,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 19:56:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:56:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:09,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:09,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:09,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:56:09,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:09,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:09,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:09,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 19:56:09,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:09,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:56:09,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:09,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:09,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:09,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:56:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:09,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:09,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:56:09,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:09,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:56:09,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:56:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:56:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:56:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:09,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954883618] [2020-10-27 19:56:09,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:09,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:56:09,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696533881] [2020-10-27 19:56:09,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:56:09,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:09,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:56:09,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:56:09,741 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand 5 states. [2020-10-27 19:56:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:10,831 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2020-10-27 19:56:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:56:10,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-27 19:56:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:10,835 INFO L225 Difference]: With dead ends: 136 [2020-10-27 19:56:10,835 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 19:56:10,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:56:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 19:56:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 108. [2020-10-27 19:56:10,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 19:56:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2020-10-27 19:56:10,883 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 26 [2020-10-27 19:56:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:10,884 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2020-10-27 19:56:10,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:56:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2020-10-27 19:56:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:56:10,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:10,889 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] [2020-10-27 19:56:10,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:56:10,890 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:10,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:10,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1921750662, now seen corresponding path program 1 times [2020-10-27 19:56:10,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:10,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496525787] [2020-10-27 19:56:10,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:10,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:11,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:11,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 19:56:11,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:56:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-27 19:56:11,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:56:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:56:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 19:56:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:11,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:11,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:11,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:56:11,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:56:11,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:11,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:11,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 19:56:11,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:11,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:56:11,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 19:56:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:56:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:11,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:56:11,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:56:11,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:56:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:56:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:56:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:11,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496525787] [2020-10-27 19:56:11,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:11,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:56:11,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684045705] [2020-10-27 19:56:11,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:56:11,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:11,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:56:11,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:56:11,721 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand 6 states. [2020-10-27 19:56:12,304 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 19:56:13,144 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 19:56:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:14,409 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2020-10-27 19:56:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:56:14,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 19:56:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:14,417 INFO L225 Difference]: With dead ends: 311 [2020-10-27 19:56:14,417 INFO L226 Difference]: Without dead ends: 219 [2020-10-27 19:56:14,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:56:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-27 19:56:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2020-10-27 19:56:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-27 19:56:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2020-10-27 19:56:14,488 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 26 [2020-10-27 19:56:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:14,489 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2020-10-27 19:56:14,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:56:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2020-10-27 19:56:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 19:56:14,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:14,497 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] [2020-10-27 19:56:14,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:56:14,497 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:14,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:14,498 INFO L82 PathProgramCache]: Analyzing trace with hash -869311059, now seen corresponding path program 1 times [2020-10-27 19:56:14,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:14,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494970228] [2020-10-27 19:56:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:14,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:14,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 19:56:14,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:56:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-27 19:56:14,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:56:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 19:56:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 19:56:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:15,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:15,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:15,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:56:15,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:15,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:15,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:15,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 19:56:15,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:56:15,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 19:56:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:15,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:15,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:56:15,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:56:15,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 19:56:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:15,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494970228] [2020-10-27 19:56:15,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:15,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:56:15,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932717975] [2020-10-27 19:56:15,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:56:15,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:15,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:56:15,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:56:15,107 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand 6 states. [2020-10-27 19:56:15,421 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-27 19:56:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:16,697 INFO L93 Difference]: Finished difference Result 311 states and 369 transitions. [2020-10-27 19:56:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:56:16,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-27 19:56:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:16,706 INFO L225 Difference]: With dead ends: 311 [2020-10-27 19:56:16,706 INFO L226 Difference]: Without dead ends: 164 [2020-10-27 19:56:16,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:56:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-27 19:56:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2020-10-27 19:56:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 19:56:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-10-27 19:56:16,730 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 28 [2020-10-27 19:56:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:16,730 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-10-27 19:56:16,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:56:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-10-27 19:56:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 19:56:16,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:16,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:56:16,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:56:16,732 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:16,733 INFO L82 PathProgramCache]: Analyzing trace with hash -388511731, now seen corresponding path program 1 times [2020-10-27 19:56:16,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:16,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95030765] [2020-10-27 19:56:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:17,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:17,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 19:56:17,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 19:56:17,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:56:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:56:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 19:56:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:17,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:17,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:17,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:17,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 19:56:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:56:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:17,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:17,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:17,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 19:56:17,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:56:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 19:56:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 19:56:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:17,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:17,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:56:17,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 19:56:17,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:56:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:56:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:17,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:56:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:17,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:17,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:17,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:56:17,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:56:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:56:17,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:17,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95030765] [2020-10-27 19:56:17,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:17,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 19:56:17,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511113564] [2020-10-27 19:56:17,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:56:17,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:17,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:56:17,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:56:17,401 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 9 states. [2020-10-27 19:56:17,929 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 19:56:18,230 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:56:19,116 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 19:56:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:19,844 INFO L93 Difference]: Finished difference Result 160 states and 181 transitions. [2020-10-27 19:56:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 19:56:19,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-27 19:56:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:19,848 INFO L225 Difference]: With dead ends: 160 [2020-10-27 19:56:19,848 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 19:56:19,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:56:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 19:56:19,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 122. [2020-10-27 19:56:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 19:56:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2020-10-27 19:56:19,867 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 30 [2020-10-27 19:56:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:19,867 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2020-10-27 19:56:19,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:56:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2020-10-27 19:56:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 19:56:19,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:19,869 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, 1, 1, 1] [2020-10-27 19:56:19,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:56:19,869 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:19,870 INFO L82 PathProgramCache]: Analyzing trace with hash 71711021, now seen corresponding path program 1 times [2020-10-27 19:56:19,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:19,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877658639] [2020-10-27 19:56:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:20,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:56:20,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-27 19:56:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 19:56:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:56:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 19:56:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:21,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:21,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:21,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:21,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:56:21,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:56:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:21,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:21,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 19:56:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:56:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 19:56:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:56:21,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 19:56:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:21,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:21,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:56:21,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:56:21,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:56:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:56:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:56:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:21,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:21,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 19:56:21,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:21,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:56:21,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:56:21,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:56:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:56:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:21,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:56:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 19:56:21,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:56:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:56:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:56:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:22,158 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 19:56:22,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:56:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:22,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:22,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:22,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-27 19:56:22,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:56:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:56:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:56:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0