/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:12:27,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:12:27,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:12:27,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:12:27,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:12:27,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:12:27,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:12:27,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:12:27,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:12:27,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:12:27,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:12:27,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:12:27,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:12:27,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:12:27,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:12:27,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:12:27,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:12:27,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:12:27,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:12:27,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:12:27,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:12:27,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:12:27,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:12:27,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:12:27,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:12:27,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:12:27,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:12:27,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:12:27,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:12:27,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:12:27,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:12:27,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:12:27,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:12:27,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:12:27,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:12:27,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:12:27,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:12:27,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:12:27,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:12:27,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:12:27,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:12:27,904 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 [2020-10-29 12:12:27,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:12:27,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:12:27,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:12:27,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:12:27,969 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:12:27,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:12:27,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:12:27,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:12:27,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:12:27,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:12:27,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:12:27,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:12:27,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:12:27,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:12:27,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:12:27,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:12:27,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:12:27,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:12:27,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:12:27,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:12:27,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:12:27,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:12:27,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:12:27,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:12:27,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:12:27,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:12:27,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:12:27,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:12:27,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:12:27,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:12:28,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:12:28,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:12:28,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:12:28,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:12:28,467 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:12:28,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-29 12:12:28,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b21d0f20/fe84c76f0f7a46028984f54fc2f3585b/FLAG93e5b52d6 [2020-10-29 12:12:29,276 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:12:29,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-29 12:12:29,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b21d0f20/fe84c76f0f7a46028984f54fc2f3585b/FLAG93e5b52d6 [2020-10-29 12:12:29,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b21d0f20/fe84c76f0f7a46028984f54fc2f3585b [2020-10-29 12:12:29,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:12:29,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:12:29,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:12:29,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:12:29,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:12:29,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:12:29" (1/1) ... [2020-10-29 12:12:29,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b47719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:29, skipping insertion in model container [2020-10-29 12:12:29,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:12:29" (1/1) ... [2020-10-29 12:12:29,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:12:29,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:12:30,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:12:30,295 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:12:30,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:12:30,609 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:12:30,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30 WrapperNode [2020-10-29 12:12:30,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:12:30,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:12:30,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:12:30,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:12:30,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (1/1) ... [2020-10-29 12:12:30,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (1/1) ... [2020-10-29 12:12:30,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (1/1) ... [2020-10-29 12:12:30,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (1/1) ... [2020-10-29 12:12:30,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (1/1) ... [2020-10-29 12:12:30,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (1/1) ... [2020-10-29 12:12:30,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (1/1) ... [2020-10-29 12:12:30,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:12:30,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:12:30,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:12:30,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:12:30,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (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 [2020-10-29 12:12:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:12:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:12:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 12:12:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 12:12:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:12:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2020-10-29 12:12:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 12:12:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2020-10-29 12:12:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure system_cleanup [2020-10-29 12:12:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2020-10-29 12:12:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2020-10-29 12:12:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2020-10-29 12:12:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure hello_message [2020-10-29 12:12:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure open_message [2020-10-29 12:12:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure close_message [2020-10-29 12:12:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2020-10-29 12:12:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2020-10-29 12:12:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2020-10-29 12:12:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure user_initialize [2020-10-29 12:12:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:12:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-29 12:12:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-29 12:12:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 12:12:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 12:12:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 12:12:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 12:12:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 12:12:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 12:12:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 12:12:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 12:12:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 12:12:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 12:12:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 12:12:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 12:12:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 12:12:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 12:12:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 12:12:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 12:12:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 12:12:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 12:12:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 12:12:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 12:12:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 12:12:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 12:12:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 12:12:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 12:12:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 12:12:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 12:12:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 12:12:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 12:12:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 12:12:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 12:12:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 12:12:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 12:12:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 12:12:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 12:12:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 12:12:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 12:12:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 12:12:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 12:12:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 12:12:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 12:12:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 12:12:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 12:12:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 12:12:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 12:12:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 12:12:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 12:12:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 12:12:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 12:12:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 12:12:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 12:12:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 12:12:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 12:12:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 12:12:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 12:12:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 12:12:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 12:12:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 12:12:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 12:12:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 12:12:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 12:12:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 12:12:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:12:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 12:12:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 12:12:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 12:12:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 12:12:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 12:12:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 12:12:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 12:12:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 12:12:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 12:12:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 12:12:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 12:12:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 12:12:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 12:12:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 12:12:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 12:12:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 12:12:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 12:12:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 12:12:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 12:12:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 12:12:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 12:12:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 12:12:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 12:12:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 12:12:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 12:12:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 12:12:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 12:12:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 12:12:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 12:12:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 12:12:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 12:12:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 12:12:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 12:12:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 12:12:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 12:12:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 12:12:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 12:12:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 12:12:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 12:12:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 12:12:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 12:12:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 12:12:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 12:12:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-29 12:12:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-10-29 12:12:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2020-10-29 12:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-29 12:12:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-10-29 12:12:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2020-10-29 12:12:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-29 12:12:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-29 12:12:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-29 12:12:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2020-10-29 12:12:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-29 12:12:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-29 12:12:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2020-10-29 12:12:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2020-10-29 12:12:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2020-10-29 12:12:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2020-10-29 12:12:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2020-10-29 12:12:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2020-10-29 12:12:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-29 12:12:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-29 12:12:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2020-10-29 12:12:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2020-10-29 12:12:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2020-10-29 12:12:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-29 12:12:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2020-10-29 12:12:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2020-10-29 12:12:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2020-10-29 12:12:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-29 12:12:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2020-10-29 12:12:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2020-10-29 12:12:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2020-10-29 12:12:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2020-10-29 12:12:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2020-10-29 12:12:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2020-10-29 12:12:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2020-10-29 12:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2020-10-29 12:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure index [2020-10-29 12:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2020-10-29 12:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2020-10-29 12:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2020-10-29 12:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2020-10-29 12:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2020-10-29 12:12:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2020-10-29 12:12:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2020-10-29 12:12:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2020-10-29 12:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2020-10-29 12:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2020-10-29 12:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2020-10-29 12:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2020-10-29 12:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 12:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 12:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2020-10-29 12:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure system_cleanup [2020-10-29 12:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-29 12:12:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2020-10-29 12:12:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2020-10-29 12:12:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2020-10-29 12:12:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure hello_message [2020-10-29 12:12:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure open_message [2020-10-29 12:12:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure close_message [2020-10-29 12:12:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2020-10-29 12:12:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 12:12:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-29 12:12:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2020-10-29 12:12:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure user_initialize [2020-10-29 12:12:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 12:12:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:12:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:12:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:12:32,138 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:12:32,139 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:12:32,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:12:32 BoogieIcfgContainer [2020-10-29 12:12:32,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:12:32,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:12:32,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:12:32,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:12:32,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:12:29" (1/3) ... [2020-10-29 12:12:32,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e792938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:12:32, skipping insertion in model container [2020-10-29 12:12:32,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:30" (2/3) ... [2020-10-29 12:12:32,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e792938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:12:32, skipping insertion in model container [2020-10-29 12:12:32,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:12:32" (3/3) ... [2020-10-29 12:12:32,150 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2020-10-29 12:12:32,163 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:12:32,168 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:12:32,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:12:32,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:12:32,212 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:12:32,212 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:12:32,212 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:12:32,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:12:32,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:12:32,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:12:32,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:12:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-29 12:12:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 12:12:32,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:32,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:12:32,257 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1553772573, now seen corresponding path program 1 times [2020-10-29 12:12:32,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:32,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50241540] [2020-10-29 12:12:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:33,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:35,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:12:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:12:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3466 [2020-10-29 12:12:35,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:35,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:12:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:12:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:12:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:12:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:36,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:36,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:36,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:36,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:12:36,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:36,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:36,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:36,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:36,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:12:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:36,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:36,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:12:36,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 12:12:36,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:36,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:12:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:12:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:12:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:36,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:36,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:12:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:36,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:12:36,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50241540] [2020-10-29 12:12:36,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:12:36,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:12:36,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934108451] [2020-10-29 12:12:36,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:12:36,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:12:36,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:12:36,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:12:36,547 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 8 states. [2020-10-29 12:12:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:12:38,990 INFO L93 Difference]: Finished difference Result 396 states and 551 transitions. [2020-10-29 12:12:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:12:38,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-29 12:12:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:12:39,007 INFO L225 Difference]: With dead ends: 396 [2020-10-29 12:12:39,008 INFO L226 Difference]: Without dead ends: 221 [2020-10-29 12:12:39,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:12:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-29 12:12:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 166. [2020-10-29 12:12:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-29 12:12:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2020-10-29 12:12:39,100 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 29 [2020-10-29 12:12:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:12:39,100 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2020-10-29 12:12:39,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:12:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2020-10-29 12:12:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 12:12:39,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:39,105 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-29 12:12:39,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:12:39,105 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:39,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1503468407, now seen corresponding path program 1 times [2020-10-29 12:12:39,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:39,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405354559] [2020-10-29 12:12:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:44,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 12:12:44,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:12:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:12:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:44,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:12:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 12:12:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:12:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:44,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:44,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:12:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:44,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:12:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:44,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:44,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:12:44,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:12:44,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:44,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:44,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:44,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:44,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:44,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:12:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:44,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:44,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:44,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:12:44,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:44,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:12:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:44,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:44,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:12:44,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:12:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:44,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:44,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:12:44,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:12:44,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:12:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:12:44,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405354559] [2020-10-29 12:12:44,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:12:44,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:12:44,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284807617] [2020-10-29 12:12:44,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:12:44,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:12:44,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:12:44,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:12:44,686 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand 12 states. [2020-10-29 12:12:45,843 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 12:12:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:12:48,905 INFO L93 Difference]: Finished difference Result 453 states and 652 transitions. [2020-10-29 12:12:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 12:12:48,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-29 12:12:48,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:12:48,919 INFO L225 Difference]: With dead ends: 453 [2020-10-29 12:12:48,919 INFO L226 Difference]: Without dead ends: 315 [2020-10-29 12:12:48,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:12:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-29 12:12:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 232. [2020-10-29 12:12:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-29 12:12:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 310 transitions. [2020-10-29 12:12:49,030 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 310 transitions. Word has length 45 [2020-10-29 12:12:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:12:49,030 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 310 transitions. [2020-10-29 12:12:49,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:12:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 310 transitions. [2020-10-29 12:12:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 12:12:49,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:49,036 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-29 12:12:49,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:12:49,036 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:49,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1032844947, now seen corresponding path program 1 times [2020-10-29 12:12:49,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:49,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914095238] [2020-10-29 12:12:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:49,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:53,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:53,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:12:53,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:12:53,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4639 [2020-10-29 12:12:53,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:53,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:12:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 12:12:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:12:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:53,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:53,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:53,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:53,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:53,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:12:53,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:53,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:53,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:53,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:53,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:53,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:12:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:53,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:53,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:12:53,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:12:53,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:53,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:12:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:54,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:54,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:12:54,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:54,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:12:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:12:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:12:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:54,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:12:54,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914095238] [2020-10-29 12:12:54,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:12:54,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:12:54,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098445603] [2020-10-29 12:12:54,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:12:54,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:12:54,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:12:54,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:12:54,070 INFO L87 Difference]: Start difference. First operand 232 states and 310 transitions. Second operand 12 states. [2020-10-29 12:12:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:12:57,241 INFO L93 Difference]: Finished difference Result 591 states and 900 transitions. [2020-10-29 12:12:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:12:57,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-29 12:12:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:12:57,253 INFO L225 Difference]: With dead ends: 591 [2020-10-29 12:12:57,253 INFO L226 Difference]: Without dead ends: 387 [2020-10-29 12:12:57,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:12:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-29 12:12:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 344. [2020-10-29 12:12:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-29 12:12:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 481 transitions. [2020-10-29 12:12:57,321 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 481 transitions. Word has length 46 [2020-10-29 12:12:57,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:12:57,322 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 481 transitions. [2020-10-29 12:12:57,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:12:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 481 transitions. [2020-10-29 12:12:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 12:12:57,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:57,325 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-29 12:12:57,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:12:57,325 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:57,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2043962197, now seen corresponding path program 1 times [2020-10-29 12:12:57,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:57,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209591148] [2020-10-29 12:12:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:58,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:02,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:02,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:13:02,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:13:02,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:13:02,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:02,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:13:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:13:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:13:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:02,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:02,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:02,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:02,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:02,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:13:02,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:02,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:02,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:13:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:02,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:02,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:02,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:13:02,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:02,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 12:13:02,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:02,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:02,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:13:02,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:13:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:02,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:02,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:02,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:02,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:13:02,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:02,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:02,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:13:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:13:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:13:02,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:13:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:02,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:02,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:13:02,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:02,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:13:02,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209591148] [2020-10-29 12:13:02,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:13:02,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:13:02,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356535560] [2020-10-29 12:13:02,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:13:02,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:02,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:13:02,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:13:02,928 INFO L87 Difference]: Start difference. First operand 344 states and 481 transitions. Second operand 14 states. [2020-10-29 12:13:03,940 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-29 12:13:08,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:08,084 INFO L93 Difference]: Finished difference Result 1063 states and 1586 transitions. [2020-10-29 12:13:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:13:08,085 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-29 12:13:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:08,092 INFO L225 Difference]: With dead ends: 1063 [2020-10-29 12:13:08,093 INFO L226 Difference]: Without dead ends: 747 [2020-10-29 12:13:08,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:13:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-29 12:13:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 649. [2020-10-29 12:13:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-10-29 12:13:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 971 transitions. [2020-10-29 12:13:08,199 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 971 transitions. Word has length 46 [2020-10-29 12:13:08,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:08,200 INFO L481 AbstractCegarLoop]: Abstraction has 649 states and 971 transitions. [2020-10-29 12:13:08,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:13:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 971 transitions. [2020-10-29 12:13:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 12:13:08,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:08,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 12:13:08,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:13:08,205 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1001909143, now seen corresponding path program 1 times [2020-10-29 12:13:08,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:08,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239499391] [2020-10-29 12:13:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:08,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:12,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:13,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:13,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 12:13:13,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:13:13,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:13,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:13:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:13:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:13:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:13,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:13,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:13:13,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:13,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:13,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:13:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:13,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:13,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:13:13,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:13,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 12:13:13,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:13,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:13:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:13:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:14,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:14,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:13:14,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:14,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:13:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:13:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:13:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:14,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:14,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:13:14,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:14,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:13:14,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:14,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:13:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:14,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:13:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:14,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:14,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:13:14,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:14,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:14,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:14,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:14,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:14,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 12:13:14,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239499391] [2020-10-29 12:13:14,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:14,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:13:14,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896620381] [2020-10-29 12:13:14,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:13:14,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:14,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:13:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:13:14,252 INFO L87 Difference]: Start difference. First operand 649 states and 971 transitions. Second operand 16 states. [2020-10-29 12:13:15,396 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-29 12:13:15,743 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-10-29 12:13:15,961 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-29 12:13:16,100 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-29 12:13:16,316 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-10-29 12:13:17,088 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-10-29 12:13:17,354 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2020-10-29 12:13:22,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:22,125 INFO L93 Difference]: Finished difference Result 1610 states and 2520 transitions. [2020-10-29 12:13:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:13:22,126 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-10-29 12:13:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:22,135 INFO L225 Difference]: With dead ends: 1610 [2020-10-29 12:13:22,135 INFO L226 Difference]: Without dead ends: 826 [2020-10-29 12:13:22,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 12:13:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-10-29 12:13:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 714. [2020-10-29 12:13:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-10-29 12:13:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1057 transitions. [2020-10-29 12:13:22,252 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1057 transitions. Word has length 62 [2020-10-29 12:13:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:22,252 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 1057 transitions. [2020-10-29 12:13:22,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:13:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1057 transitions. [2020-10-29 12:13:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:13:22,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:22,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2020-10-29 12:13:22,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:13:22,255 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash 691767091, now seen corresponding path program 1 times [2020-10-29 12:13:22,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:22,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548304533] [2020-10-29 12:13:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:22,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:23,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:27,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:13:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:13:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:27,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:13:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 12:13:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 12:13:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:27,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:27,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:13:27,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:27,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:13:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:27,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:13:27,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:13:27,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:27,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:13:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:27,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:27,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:27,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:27,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:27,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:27,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:27,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:13:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:27,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:27,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:27,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:13:27,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:27,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:13:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:13:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:27,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:27,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:27,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:13:27,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:13:27,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:27,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:13:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 12:13:27,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548304533] [2020-10-29 12:13:27,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:27,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:13:27,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494990139] [2020-10-29 12:13:27,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:13:27,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:27,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:13:27,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:13:27,700 INFO L87 Difference]: Start difference. First operand 714 states and 1057 transitions. Second operand 12 states. [2020-10-29 12:13:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:32,217 INFO L93 Difference]: Finished difference Result 1878 states and 3217 transitions. [2020-10-29 12:13:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 12:13:32,218 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-29 12:13:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:32,232 INFO L225 Difference]: With dead ends: 1878 [2020-10-29 12:13:32,232 INFO L226 Difference]: Without dead ends: 1192 [2020-10-29 12:13:32,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:13:32,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-10-29 12:13:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1091. [2020-10-29 12:13:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-10-29 12:13:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1731 transitions. [2020-10-29 12:13:32,399 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1731 transitions. Word has length 63 [2020-10-29 12:13:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:32,400 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1731 transitions. [2020-10-29 12:13:32,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:13:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1731 transitions. [2020-10-29 12:13:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 12:13:32,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:32,402 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:32,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:13:32,402 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:32,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1886416777, now seen corresponding path program 1 times [2020-10-29 12:13:32,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:32,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666325757] [2020-10-29 12:13:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:37,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:13:37,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-29 12:13:37,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:37,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:13:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 12:13:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:13:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:37,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:37,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:13:37,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:37,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:13:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:13:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:13:37,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:37,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:13:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:37,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:37,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:37,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:37,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:37,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:13:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:37,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:37,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:13:37,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:37,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:37,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:37,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 12:13:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:37,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:37,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:13:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:13:37,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:37,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:13:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 12:13:37,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666325757] [2020-10-29 12:13:37,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:13:37,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:13:37,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754140872] [2020-10-29 12:13:37,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:13:37,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:37,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:13:37,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:13:37,920 INFO L87 Difference]: Start difference. First operand 1091 states and 1731 transitions. Second operand 11 states. [2020-10-29 12:13:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:41,106 INFO L93 Difference]: Finished difference Result 2251 states and 3983 transitions. [2020-10-29 12:13:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:13:41,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-29 12:13:41,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:41,126 INFO L225 Difference]: With dead ends: 2251 [2020-10-29 12:13:41,126 INFO L226 Difference]: Without dead ends: 1226 [2020-10-29 12:13:41,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:13:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-10-29 12:13:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1118. [2020-10-29 12:13:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-10-29 12:13:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1760 transitions. [2020-10-29 12:13:41,284 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1760 transitions. Word has length 68 [2020-10-29 12:13:41,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:41,285 INFO L481 AbstractCegarLoop]: Abstraction has 1118 states and 1760 transitions. [2020-10-29 12:13:41,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:13:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1760 transitions. [2020-10-29 12:13:41,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 12:13:41,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:41,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:41,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:13:41,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:41,289 INFO L82 PathProgramCache]: Analyzing trace with hash 712259555, now seen corresponding path program 1 times [2020-10-29 12:13:41,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:41,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864715693] [2020-10-29 12:13:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 12:13:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:46,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:13:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:46,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:13:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:13:46,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 12:13:46,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:13:46,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:46,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:13:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:46,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:13:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:13:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:13:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:13:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:13:46,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:13:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:47,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:47,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:47,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:13:47,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:47,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:13:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:13:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:47,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:13:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:13:47,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864715693] [2020-10-29 12:13:47,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:47,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:13:47,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242589831] [2020-10-29 12:13:47,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:13:47,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:13:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:13:47,254 INFO L87 Difference]: Start difference. First operand 1118 states and 1760 transitions. Second operand 21 states. [2020-10-29 12:13:48,535 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-29 12:13:48,790 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-29 12:13:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:55,410 INFO L93 Difference]: Finished difference Result 2294 states and 3648 transitions. [2020-10-29 12:13:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:13:55,411 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2020-10-29 12:13:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:55,428 INFO L225 Difference]: With dead ends: 2294 [2020-10-29 12:13:55,429 INFO L226 Difference]: Without dead ends: 1245 [2020-10-29 12:13:55,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=312, Invalid=1580, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 12:13:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2020-10-29 12:13:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1127. [2020-10-29 12:13:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-10-29 12:13:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1774 transitions. [2020-10-29 12:13:55,581 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1774 transitions. Word has length 69 [2020-10-29 12:13:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:55,581 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 1774 transitions. [2020-10-29 12:13:55,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:13:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1774 transitions. [2020-10-29 12:13:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 12:13:55,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:55,583 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:55,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:13:55,583 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -985965579, now seen corresponding path program 1 times [2020-10-29 12:13:55,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:55,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971182054] [2020-10-29 12:13:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:00,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:00,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:14:00,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:14:00,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:00,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 12:14:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:14:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:14:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:14:01,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:14:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:14:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 12:14:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:14:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:14:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:01,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:14:01,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:14:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:14:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:14:01,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:14:01,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:14:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:14:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:01,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:14:01,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:14:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:14:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:01,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:14:01,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:14:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:14:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:14:01,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 12:14:01,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:14:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:14:02,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971182054] [2020-10-29 12:14:02,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:02,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 12:14:02,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322528676] [2020-10-29 12:14:02,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 12:14:02,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:02,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 12:14:02,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:14:02,304 INFO L87 Difference]: Start difference. First operand 1127 states and 1774 transitions. Second operand 25 states. [2020-10-29 12:14:03,893 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-29 12:14:04,104 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-29 12:14:04,380 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-29 12:14:04,611 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-29 12:14:04,853 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-29 12:14:05,101 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-29 12:14:05,796 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-29 12:14:06,308 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 12:14:06,710 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-29 12:14:07,433 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-29 12:14:11,375 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-29 12:14:11,681 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-29 12:14:16,492 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-29 12:14:16,717 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-29 12:14:19,815 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-29 12:14:19,993 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-29 12:14:20,204 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-29 12:14:20,393 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-29 12:14:20,598 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-29 12:14:20,896 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-29 12:14:21,363 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-29 12:14:22,001 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-29 12:14:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:24,465 INFO L93 Difference]: Finished difference Result 3524 states and 6479 transitions. [2020-10-29 12:14:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-29 12:14:24,466 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 73 [2020-10-29 12:14:24,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:24,494 INFO L225 Difference]: With dead ends: 3524 [2020-10-29 12:14:24,494 INFO L226 Difference]: Without dead ends: 2475 [2020-10-29 12:14:24,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3268 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1516, Invalid=8584, Unknown=0, NotChecked=0, Total=10100 [2020-10-29 12:14:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2020-10-29 12:14:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2148. [2020-10-29 12:14:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2148 states. [2020-10-29 12:14:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3687 transitions. [2020-10-29 12:14:24,794 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3687 transitions. Word has length 73 [2020-10-29 12:14:24,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:24,794 INFO L481 AbstractCegarLoop]: Abstraction has 2148 states and 3687 transitions. [2020-10-29 12:14:24,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 12:14:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3687 transitions. [2020-10-29 12:14:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:14:24,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:24,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:24,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:14:24,797 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:24,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:24,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1767233683, now seen corresponding path program 1 times [2020-10-29 12:14:24,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:24,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508406020] [2020-10-29 12:14:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5593 [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:14:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 12:14:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:31,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:31,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:31,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:31,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:31,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:14:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:31,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:14:31,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:14:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:14:32,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:14:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:14:32,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:32,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:14:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:32,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:14:32,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:14:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:14:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:32,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:32,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:14:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:14:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:14:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:14:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:14:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:14:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:32,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:14:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:14:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 12:14:32,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508406020] [2020-10-29 12:14:32,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:32,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 12:14:32,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509422258] [2020-10-29 12:14:32,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 12:14:32,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:32,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 12:14:32,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2020-10-29 12:14:32,974 INFO L87 Difference]: Start difference. First operand 2148 states and 3687 transitions. Second operand 32 states. [2020-10-29 12:14:35,412 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 12:14:35,656 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-29 12:14:36,325 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-29 12:14:36,806 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 12:14:37,345 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-29 12:14:37,617 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-29 12:14:38,644 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-29 12:14:38,958 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-29 12:14:39,294 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-10-29 12:14:44,308 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-29 12:14:44,650 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-29 12:14:45,014 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-29 12:14:45,470 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-29 12:14:50,701 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-29 12:14:54,244 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-29 12:14:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:59,148 INFO L93 Difference]: Finished difference Result 7579 states and 13413 transitions. [2020-10-29 12:14:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-10-29 12:14:59,154 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 79 [2020-10-29 12:14:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:59,217 INFO L225 Difference]: With dead ends: 7579 [2020-10-29 12:14:59,217 INFO L226 Difference]: Without dead ends: 5489 [2020-10-29 12:14:59,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6404 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=2789, Invalid=15843, Unknown=0, NotChecked=0, Total=18632 [2020-10-29 12:14:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2020-10-29 12:14:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5129. [2020-10-29 12:14:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5129 states. [2020-10-29 12:14:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 8604 transitions. [2020-10-29 12:14:59,949 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 8604 transitions. Word has length 79 [2020-10-29 12:14:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:59,950 INFO L481 AbstractCegarLoop]: Abstraction has 5129 states and 8604 transitions. [2020-10-29 12:14:59,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 12:14:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 8604 transitions. [2020-10-29 12:14:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 12:14:59,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:59,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:59,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:14:59,953 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash 858950363, now seen corresponding path program 1 times [2020-10-29 12:14:59,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:59,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380835402] [2020-10-29 12:14:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:01,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:15:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 12:15:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:05,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:15:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:15:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:15:05,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:15:05,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:15:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:15:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:05,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:05,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:05,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:15:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:05,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:15:05,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:15:05,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:15:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:15:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:15:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:15:05,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:15:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:15:05,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:15:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:05,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:15:05,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:15:05,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380835402] [2020-10-29 12:15:05,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:05,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:15:05,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134454993] [2020-10-29 12:15:05,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:15:05,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:05,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:15:05,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:15:05,605 INFO L87 Difference]: Start difference. First operand 5129 states and 8604 transitions. Second operand 18 states. [2020-10-29 12:15:08,647 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 12:15:13,046 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 12:15:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:15,599 INFO L93 Difference]: Finished difference Result 9497 states and 18630 transitions. [2020-10-29 12:15:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 12:15:15,600 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-29 12:15:15,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:15,678 INFO L225 Difference]: With dead ends: 9497 [2020-10-29 12:15:15,679 INFO L226 Difference]: Without dead ends: 7286 [2020-10-29 12:15:15,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=494, Invalid=2698, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 12:15:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2020-10-29 12:15:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 6781. [2020-10-29 12:15:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6781 states. [2020-10-29 12:15:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 11308 transitions. [2020-10-29 12:15:16,637 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 11308 transitions. Word has length 80 [2020-10-29 12:15:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:16,637 INFO L481 AbstractCegarLoop]: Abstraction has 6781 states and 11308 transitions. [2020-10-29 12:15:16,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:15:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 11308 transitions. [2020-10-29 12:15:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 12:15:16,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:16,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:16,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:15:16,645 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:16,646 INFO L82 PathProgramCache]: Analyzing trace with hash -966022127, now seen corresponding path program 1 times [2020-10-29 12:15:16,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:16,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114600007] [2020-10-29 12:15:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:23,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 12:15:23,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6586 [2020-10-29 12:15:23,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:23,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 12:15:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:15:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 12:15:23,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:23,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:23,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:15:23,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:23,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:23,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:15:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:23,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:15:23,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:23,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 12:15:23,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:23,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:23,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:23,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:23,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:15:23,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:15:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:24,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:15:24,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:15:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:15:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:24,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:15:24,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:15:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:15:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:24,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:15:24,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:15:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:24,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:15:24,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:15:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:15:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 12:15:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:15:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:15:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:15:24,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:15:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:24,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:15:24,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:24,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 12:15:25,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114600007] [2020-10-29 12:15:25,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:25,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 12:15:25,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327525870] [2020-10-29 12:15:25,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 12:15:25,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:25,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 12:15:25,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:15:25,220 INFO L87 Difference]: Start difference. First operand 6781 states and 11308 transitions. Second operand 29 states. [2020-10-29 12:15:25,363 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-29 12:15:27,144 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-10-29 12:15:28,016 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 12:15:28,469 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-10-29 12:15:28,843 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-29 12:15:29,381 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-29 12:15:29,648 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-29 12:15:31,007 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 12:15:31,273 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 12:15:32,238 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-29 12:15:32,573 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-10-29 12:15:32,826 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-29 12:15:33,068 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 12:15:33,290 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-29 12:15:33,631 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-29 12:15:35,125 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-29 12:15:36,754 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-29 12:15:38,718 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 12:15:38,954 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2020-10-29 12:15:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:42,871 INFO L93 Difference]: Finished difference Result 10713 states and 17948 transitions. [2020-10-29 12:15:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 12:15:42,872 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 95 [2020-10-29 12:15:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:42,931 INFO L225 Difference]: With dead ends: 10713 [2020-10-29 12:15:42,932 INFO L226 Difference]: Without dead ends: 7284 [2020-10-29 12:15:42,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=750, Invalid=4506, Unknown=0, NotChecked=0, Total=5256 [2020-10-29 12:15:42,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2020-10-29 12:15:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 6910. [2020-10-29 12:15:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6910 states. [2020-10-29 12:15:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6910 states to 6910 states and 11459 transitions. [2020-10-29 12:15:43,734 INFO L78 Accepts]: Start accepts. Automaton has 6910 states and 11459 transitions. Word has length 95 [2020-10-29 12:15:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:43,735 INFO L481 AbstractCegarLoop]: Abstraction has 6910 states and 11459 transitions. [2020-10-29 12:15:43,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 12:15:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6910 states and 11459 transitions. [2020-10-29 12:15:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 12:15:43,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:43,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:43,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:15:43,738 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:43,739 INFO L82 PathProgramCache]: Analyzing trace with hash 664276963, now seen corresponding path program 1 times [2020-10-29 12:15:43,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:43,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893225099] [2020-10-29 12:15:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:43,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:49,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:49,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 12:15:49,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6081 [2020-10-29 12:15:49,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:49,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 12:15:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:15:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 12:15:49,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,906 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-10-29 12:15:51,308 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-10-29 12:15:51,628 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-29 12:15:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:52,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:15:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:15:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:15:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 12:15:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:52,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:15:52,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:15:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:15:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:52,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:15:52,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:15:52,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:15:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:52,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:15:52,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:52,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:52,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:52,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:15:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0