/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/list-simple/dll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:47:43,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:47:43,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:47:43,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:47:43,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:47:43,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:47:43,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:47:43,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:47:44,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:47:44,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:47:44,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:47:44,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:47:44,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:47:44,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:47:44,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:47:44,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:47:44,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:47:44,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:47:44,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:47:44,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:47:44,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:47:44,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:47:44,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:47:44,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:47:44,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:47:44,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:47:44,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:47:44,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:47:44,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:47:44,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:47:44,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:47:44,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:47:44,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:47:44,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:47:44,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:47:44,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:47:44,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:47:44,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:47:44,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:47:44,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:47:44,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:47:44,088 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 [2020-10-28 14:47:44,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:47:44,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:47:44,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:47:44,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:47:44,147 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:47:44,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:47:44,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:47:44,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:47:44,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:47:44,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:47:44,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:47:44,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:47:44,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:47:44,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:47:44,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:47:44,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:47:44,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:47:44,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:47:44,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:47:44,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:47:44,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:47:44,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:47:44,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:47:44,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:47:44,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:47:44,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:47:44,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:47:44,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:47:44,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:47:44,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:47:44,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:47:44,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:47:44,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:47:44,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:47:44,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:47:44,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2020-10-28 14:47:44,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5ec0b93/4b483b062cf244d4bbee4474843b1a6b/FLAG42490b17d [2020-10-28 14:47:45,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:47:45,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2020-10-28 14:47:45,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5ec0b93/4b483b062cf244d4bbee4474843b1a6b/FLAG42490b17d [2020-10-28 14:47:45,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5ec0b93/4b483b062cf244d4bbee4474843b1a6b [2020-10-28 14:47:45,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:47:45,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:47:45,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:47:45,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:47:45,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:47:45,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:47:45" (1/1) ... [2020-10-28 14:47:45,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5796d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:45, skipping insertion in model container [2020-10-28 14:47:45,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:47:45" (1/1) ... [2020-10-28 14:47:45,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:47:45,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:47:46,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:47:46,327 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:47:46,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:47:46,498 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:47:46,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46 WrapperNode [2020-10-28 14:47:46,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:47:46,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:47:46,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:47:46,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:47:46,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (1/1) ... [2020-10-28 14:47:46,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (1/1) ... [2020-10-28 14:47:46,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (1/1) ... [2020-10-28 14:47:46,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (1/1) ... [2020-10-28 14:47:46,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (1/1) ... [2020-10-28 14:47:46,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (1/1) ... [2020-10-28 14:47:46,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (1/1) ... [2020-10-28 14:47:46,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:47:46,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:47:46,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:47:46,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:47:46,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (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 [2020-10-28 14:47:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:47:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:47:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:47:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:47:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:47:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:47:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:47:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-28 14:47:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-28 14:47:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2020-10-28 14:47:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:47:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:47:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:47:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:47:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:47:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:47:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:47:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:47:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:47:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:47:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:47:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:47:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:47:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:47:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:47:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:47:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:47:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:47:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:47:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:47:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:47:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:47:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:47:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:47:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:47:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:47:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:47:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:47:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:47:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:47:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:47:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:47:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:47:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:47:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:47:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:47:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:47:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:47:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:47:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:47:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:47:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:47:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:47:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:47:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:47:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:47:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:47:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:47:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:47:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:47:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:47:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:47:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:47:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:47:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:47:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:47:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:47:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:47:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:47:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:47:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:47:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:47:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:47:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:47:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:47:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:47:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:47:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:47:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:47:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:47:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:47:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:47:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:47:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:47:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:47:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:47:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:47:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:47:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:47:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:47:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:47:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:47:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:47:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:47:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:47:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:47:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:47:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:47:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:47:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:47:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:47:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:47:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:47:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:47:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:47:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:47:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:47:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:47:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:47:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:47:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:47:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:47:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:47:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:47:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:47:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:47:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:47:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:47:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:47:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:47:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:47:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:47:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:47:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:47:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:47:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:47:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-28 14:47:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-28 14:47:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:47:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:47:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2020-10-28 14:47:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:47:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:47:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:47:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:47:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:47:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:47:47,110 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:47:47,532 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:47:47,533 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:47:47,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:47:47 BoogieIcfgContainer [2020-10-28 14:47:47,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:47:47,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:47:47,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:47:47,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:47:47,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:47:45" (1/3) ... [2020-10-28 14:47:47,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599bac83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:47:47, skipping insertion in model container [2020-10-28 14:47:47,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:47:46" (2/3) ... [2020-10-28 14:47:47,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599bac83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:47:47, skipping insertion in model container [2020-10-28 14:47:47,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:47:47" (3/3) ... [2020-10-28 14:47:47,561 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2020-10-28 14:47:47,578 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:47:47,588 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:47:47,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:47:47,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:47:47,663 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:47:47,663 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:47:47,663 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:47:47,665 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:47:47,666 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:47:47,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:47:47,666 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:47:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-28 14:47:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:47:47,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:47:47,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:47:47,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:47:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:47:47,720 INFO L82 PathProgramCache]: Analyzing trace with hash 278959345, now seen corresponding path program 1 times [2020-10-28 14:47:47,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:47:47,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359482498] [2020-10-28 14:47:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:47:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:50,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:47:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:47:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2462 [2020-10-28 14:47:50,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:50,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 14:47:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:47:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:47:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:50,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:50,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:47:50,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:47:50,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:50,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:50,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:47:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:50,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:50,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:50,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:47:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:50,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:47:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:47:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:50,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:50,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:47:50,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:47:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:47:50,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:50,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:50,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:50,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:50,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:50,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:47:50,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:50,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:47:50,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359482498] [2020-10-28 14:47:50,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:47:50,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:47:50,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123637652] [2020-10-28 14:47:50,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:47:50,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:47:50,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:47:50,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:47:50,871 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-28 14:47:51,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:47:51,200 INFO L93 Difference]: Finished difference Result 106 states and 141 transitions. [2020-10-28 14:47:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:47:51,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-28 14:47:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:47:51,213 INFO L225 Difference]: With dead ends: 106 [2020-10-28 14:47:51,214 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:47:51,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:47:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:47:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-28 14:47:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:47:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-28 14:47:51,268 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 33 [2020-10-28 14:47:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:47:51,269 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-28 14:47:51,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:47:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-28 14:47:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:47:51,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:47:51,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:47:51,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:47:51,271 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:47:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:47:51,272 INFO L82 PathProgramCache]: Analyzing trace with hash 270647656, now seen corresponding path program 1 times [2020-10-28 14:47:51,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:47:51,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187480378] [2020-10-28 14:47:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:47:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:51,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:47:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:47:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1900 [2020-10-28 14:47:53,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:53,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 14:47:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 14:47:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:47:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:53,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:47:53,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:47:53,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:53,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:47:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:53,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:53,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:53,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:47:53,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:53,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:53,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:47:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:47:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:47:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:53,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:47:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 14:47:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:53,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:53,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:47:53,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:53,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:53,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:47:53,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187480378] [2020-10-28 14:47:53,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:47:53,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:47:53,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242932113] [2020-10-28 14:47:53,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:47:53,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:47:53,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:47:53,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:47:53,411 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 5 states. [2020-10-28 14:47:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:47:53,632 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-28 14:47:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:47:53,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-28 14:47:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:47:53,634 INFO L225 Difference]: With dead ends: 60 [2020-10-28 14:47:53,634 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 14:47:53,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:47:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 14:47:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-28 14:47:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:47:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-28 14:47:53,646 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 33 [2020-10-28 14:47:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:47:53,647 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-28 14:47:53,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:47:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-28 14:47:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:47:53,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:47:53,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:47:53,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:47:53,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:47:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:47:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1642808384, now seen corresponding path program 1 times [2020-10-28 14:47:53,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:47:53,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780362406] [2020-10-28 14:47:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:47:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:58,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:58,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:47:58,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:47:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 14:47:58,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:58,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:47:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:47:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:47:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:47:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:58,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:58,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:47:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:47:58,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:47:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:58,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:58,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:58,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:58,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:47:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:47:58,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:58,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:47:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:47:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:58,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:58,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:47:58,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:47:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:58,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:47:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:47:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:47:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:58,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:59,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:59,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:59,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:47:59,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:59,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:59,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:47:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:47:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:47:59,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780362406] [2020-10-28 14:47:59,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:47:59,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:47:59,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857987098] [2020-10-28 14:47:59,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:47:59,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:47:59,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:47:59,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:47:59,036 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 7 states. [2020-10-28 14:47:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:47:59,371 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2020-10-28 14:47:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:47:59,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-28 14:47:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:47:59,373 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:47:59,373 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:47:59,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:47:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:47:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-28 14:47:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:47:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-28 14:47:59,393 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 34 [2020-10-28 14:47:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:47:59,394 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-28 14:47:59,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:47:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-28 14:47:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:47:59,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:47:59,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:47:59,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:47:59,399 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:47:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:47:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1331277171, now seen corresponding path program 1 times [2020-10-28 14:47:59,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:47:59,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48553210] [2020-10-28 14:47:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:47:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:59,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 14:48:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:48:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:48:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:48:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:04,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:04,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:48:04,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:04,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:04,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:04,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:04,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:04,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:04,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:04,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:48:04,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:04,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:48:04,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:48:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:04,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:04,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:48:04,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 14:48:04,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:04,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:48:04,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:48:04,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:04,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:04,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:04,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:48:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:04,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:48:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:48:04,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48553210] [2020-10-28 14:48:04,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:04,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:48:04,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408484434] [2020-10-28 14:48:04,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:48:04,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:04,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:48:04,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:48:04,755 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 9 states. [2020-10-28 14:48:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:05,192 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-28 14:48:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:48:05,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-28 14:48:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:05,194 INFO L225 Difference]: With dead ends: 60 [2020-10-28 14:48:05,194 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:48:05,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:48:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:48:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-28 14:48:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:48:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 14:48:05,206 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 34 [2020-10-28 14:48:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:05,207 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 14:48:05,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:48:05,207 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 14:48:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:48:05,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:05,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:05,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:48:05,209 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:05,210 INFO L82 PathProgramCache]: Analyzing trace with hash 60046777, now seen corresponding path program 1 times [2020-10-28 14:48:05,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:05,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606065869] [2020-10-28 14:48:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 14:48:10,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:48:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:48:10,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:48:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:48:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:10,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:48:10,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:48:10,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:48:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:48:10,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 14:48:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:48:10,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:48:10,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:48:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:10,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:10,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:48:10,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:10,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:48:10,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606065869] [2020-10-28 14:48:10,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:10,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:48:10,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503812169] [2020-10-28 14:48:10,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:48:10,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:10,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:48:10,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:48:10,425 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-28 14:48:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:10,635 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-10-28 14:48:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:48:10,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-28 14:48:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:10,636 INFO L225 Difference]: With dead ends: 81 [2020-10-28 14:48:10,637 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:48:10,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:48:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:48:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-28 14:48:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:48:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-28 14:48:10,648 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 39 [2020-10-28 14:48:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:10,650 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-28 14:48:10,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:48:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-28 14:48:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:48:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:10,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:10,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:48:10,665 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash -449426313, now seen corresponding path program 1 times [2020-10-28 14:48:10,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:10,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129638710] [2020-10-28 14:48:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:11,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 14:48:15,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:48:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:48:15,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:48:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:48:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:15,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:48:15,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:48:15,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:48:15,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:48:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:48:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:48:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 14:48:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:48:15,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:48:15,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:48:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:15,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:48:15,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:15,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:48:15,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129638710] [2020-10-28 14:48:15,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:15,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:48:15,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102843472] [2020-10-28 14:48:15,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:48:15,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:15,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:48:15,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:48:15,942 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 8 states. [2020-10-28 14:48:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:16,232 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2020-10-28 14:48:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:48:16,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-28 14:48:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:16,234 INFO L225 Difference]: With dead ends: 81 [2020-10-28 14:48:16,234 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:48:16,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:48:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:48:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-28 14:48:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 14:48:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-28 14:48:16,242 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 39 [2020-10-28 14:48:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:16,242 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-28 14:48:16,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:48:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-28 14:48:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 14:48:16,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:16,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:16,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:48:16,244 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:16,245 INFO L82 PathProgramCache]: Analyzing trace with hash -966400497, now seen corresponding path program 1 times [2020-10-28 14:48:16,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:16,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845434182] [2020-10-28 14:48:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:21,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:21,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 14:48:21,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:48:21,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 14:48:21,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:21,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:21,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:48:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 14:48:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:48:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:48:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:21,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:21,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:21,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:21,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:48:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:21,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:21,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:21,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:21,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:48:21,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:48:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 14:48:21,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:21,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:48:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:22,518 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2020-10-28 14:48:23,591 WARN L193 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 58 [2020-10-28 14:48:23,867 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 39 [2020-10-28 14:48:23,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:23,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:23,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:23,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:48:23,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:23,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:48:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:48:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:48:24,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845434182] [2020-10-28 14:48:24,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:24,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:48:24,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768226437] [2020-10-28 14:48:24,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:48:24,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:24,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:48:24,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:48:24,044 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 14 states. [2020-10-28 14:48:24,962 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-28 14:48:25,810 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-28 14:48:26,342 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-28 14:48:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:26,747 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2020-10-28 14:48:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:48:26,748 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-28 14:48:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:26,749 INFO L225 Difference]: With dead ends: 72 [2020-10-28 14:48:26,749 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 14:48:26,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:48:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 14:48:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2020-10-28 14:48:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:48:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-28 14:48:26,767 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 44 [2020-10-28 14:48:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:26,768 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-28 14:48:26,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:48:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-28 14:48:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 14:48:26,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:26,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:26,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:48:26,770 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:26,771 INFO L82 PathProgramCache]: Analyzing trace with hash -964791783, now seen corresponding path program 1 times [2020-10-28 14:48:26,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:26,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595410880] [2020-10-28 14:48:26,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:29,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:29,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 14:48:29,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2366 [2020-10-28 14:48:29,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:29,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 14:48:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 14:48:29,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:29,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:29,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:48:29,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:29,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:29,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:29,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:29,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 14:48:29,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:29,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:48:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:48:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:48:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-28 14:48:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:30,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:48:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:48:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:31,063 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-28 14:48:31,439 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-28 14:48:31,837 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-28 14:48:32,074 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-28 14:48:32,344 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-28 14:48:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:32,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:32,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:32,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 14:48:32,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:32,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:48:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:48:32,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:33,162 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2020-10-28 14:48:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:48:33,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595410880] [2020-10-28 14:48:33,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:33,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:48:33,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243182367] [2020-10-28 14:48:33,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:48:33,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:33,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:48:33,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:48:33,188 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 26 states. [2020-10-28 14:48:34,817 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-28 14:48:35,039 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-28 14:48:36,100 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-28 14:48:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:36,773 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2020-10-28 14:48:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 14:48:36,774 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2020-10-28 14:48:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:36,776 INFO L225 Difference]: With dead ends: 80 [2020-10-28 14:48:36,776 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 14:48:36,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 14:48:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 14:48:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-10-28 14:48:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 14:48:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-28 14:48:36,790 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 44 [2020-10-28 14:48:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:36,790 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-28 14:48:36,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:48:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-28 14:48:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 14:48:36,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:36,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:36,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:48:36,792 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:36,792 INFO L82 PathProgramCache]: Analyzing trace with hash -286342127, now seen corresponding path program 1 times [2020-10-28 14:48:36,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:36,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091544066] [2020-10-28 14:48:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:37,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:41,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 14:48:41,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 14:48:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:48:41,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:41,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:48:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 14:48:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:48:41,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:41,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:41,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:48:41,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:41,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:41,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:41,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:48:41,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:41,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:41,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:48:42,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:48:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-28 14:48:42,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:42,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:48:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:42,513 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-10-28 14:48:42,914 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-28 14:48:43,580 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-10-28 14:48:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:43,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:43,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:43,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:48:43,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:43,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:48:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:48:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:48:43,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091544066] [2020-10-28 14:48:43,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:43,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:48:43,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785062745] [2020-10-28 14:48:43,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:48:43,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:48:43,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:48:43,756 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 13 states. [2020-10-28 14:48:44,642 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-10-28 14:48:44,975 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-10-28 14:48:45,389 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-28 14:48:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:45,728 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-10-28 14:48:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:48:45,729 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-28 14:48:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:45,732 INFO L225 Difference]: With dead ends: 78 [2020-10-28 14:48:45,732 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:48:45,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:48:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:48:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2020-10-28 14:48:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 14:48:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-28 14:48:45,755 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 44 [2020-10-28 14:48:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:45,759 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-28 14:48:45,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:48:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-28 14:48:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 14:48:45,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:45,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:45,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:48:45,763 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:45,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1949021305, now seen corresponding path program 1 times [2020-10-28 14:48:45,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:45,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922147272] [2020-10-28 14:48:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:48,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 14:48:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:48:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:50,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:48:50,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:50,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:50,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:48:50,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:50,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 14:48:50,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:50,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:50,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:50,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:50,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:48:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:51,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:51,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:51,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:51,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:48:51,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922147272] [2020-10-28 14:48:51,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:51,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:48:51,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061690116] [2020-10-28 14:48:51,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:48:51,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:51,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:48:51,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:48:51,071 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 7 states. [2020-10-28 14:48:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:51,350 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-28 14:48:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:48:51,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-28 14:48:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:51,352 INFO L225 Difference]: With dead ends: 73 [2020-10-28 14:48:51,352 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 14:48:51,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:48:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 14:48:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-28 14:48:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 14:48:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-28 14:48:51,364 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 45 [2020-10-28 14:48:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:51,365 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-28 14:48:51,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:48:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-28 14:48:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 14:48:51,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:51,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:51,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:48:51,366 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1557603009, now seen corresponding path program 1 times [2020-10-28 14:48:51,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:51,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886146366] [2020-10-28 14:48:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:56,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:48:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:48:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 14:48:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:56,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:48:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 14:48:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:56,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:56,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:56,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:48:56,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:56,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:56,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:56,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:56,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:48:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:56,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:48:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:56,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:56,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:48:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 14:48:56,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:56,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:48:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:48:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:56,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:56,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:56,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:48:56,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:56,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:48:56,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:48:56,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886146366] [2020-10-28 14:48:56,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:56,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 14:48:56,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962250412] [2020-10-28 14:48:56,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:48:56,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:56,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:48:56,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:48:56,985 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 15 states. [2020-10-28 14:48:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:57,959 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-10-28 14:48:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:48:57,960 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-10-28 14:48:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:57,961 INFO L225 Difference]: With dead ends: 78 [2020-10-28 14:48:57,962 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 14:48:57,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:48:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 14:48:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2020-10-28 14:48:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 14:48:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-28 14:48:57,981 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 45 [2020-10-28 14:48:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:57,982 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-28 14:48:57,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:48:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-28 14:48:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 14:48:57,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:57,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:57,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:48:57,983 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1025064250, now seen corresponding path program 2 times [2020-10-28 14:48:57,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:57,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082830820] [2020-10-28 14:48:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:58,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:02,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:02,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:49:02,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:49:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4759 [2020-10-28 14:49:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:02,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:49:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:49:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 14:49:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:02,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:02,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:02,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:49:02,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:49:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:49:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:02,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:49:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:49:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:49:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:02,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:02,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:49:02,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:49:02,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:02,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:49:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:49:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:49:02,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:03,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:03,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:03,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:49:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:03,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:49:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:49:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:49:03,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082830820] [2020-10-28 14:49:03,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:03,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:49:03,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372190032] [2020-10-28 14:49:03,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:49:03,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:49:03,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:49:03,047 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 8 states. [2020-10-28 14:49:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:49:03,384 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-28 14:49:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:49:03,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-28 14:49:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:49:03,386 INFO L225 Difference]: With dead ends: 71 [2020-10-28 14:49:03,386 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 14:49:03,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:49:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 14:49:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-28 14:49:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:49:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-28 14:49:03,404 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 45 [2020-10-28 14:49:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:49:03,407 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-28 14:49:03,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:49:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-28 14:49:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:49:03,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:49:03,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:49:03,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:49:03,409 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:49:03,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:49:03,410 INFO L82 PathProgramCache]: Analyzing trace with hash 547371434, now seen corresponding path program 1 times [2020-10-28 14:49:03,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:49:03,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398561395] [2020-10-28 14:49:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:49:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:04,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 14:49:08,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:49:08,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4718 [2020-10-28 14:49:08,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:49:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 14:49:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:49:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:49:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:49:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:49:08,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:49:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:49:08,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:49:08,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:49:08,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:49:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:49:08,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:49:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:08,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:49:08,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:10,205 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2020-10-28 14:49:13,900 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 334 DAG size of output: 75 [2020-10-28 14:49:32,394 WARN L193 SmtUtils]: Spent 17.99 s on a formula simplification. DAG size of input: 903 DAG size of output: 181 [2020-10-28 14:49:36,395 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 735 DAG size of output: 59 [2020-10-28 14:49:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:49:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:49:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:49:36,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:49:36,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:49:36,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:49:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:49:36,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:49:36,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:49:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:49:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:49:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:49:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:49:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:49:36,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398561395] [2020-10-28 14:49:36,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:49:36,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:49:36,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019641744] [2020-10-28 14:49:36,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:49:36,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:49:36,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:49:36,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:49:36,659 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 16 states. [2020-10-28 14:49:43,710 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 212 DAG size of output: 161 [2020-10-28 14:49:46,502 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2020-10-28 14:49:53,497 WARN L193 SmtUtils]: Spent 6.63 s on a formula simplification. DAG size of input: 206 DAG size of output: 201 [2020-10-28 14:50:02,295 WARN L193 SmtUtils]: Spent 8.48 s on a formula simplification. DAG size of input: 220 DAG size of output: 215 [2020-10-28 14:50:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:03,139 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-10-28 14:50:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:50:03,141 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-28 14:50:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:03,142 INFO L225 Difference]: With dead ends: 69 [2020-10-28 14:50:03,142 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 14:50:03,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:50:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 14:50:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-28 14:50:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 14:50:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-10-28 14:50:03,159 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 46 [2020-10-28 14:50:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:03,161 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-10-28 14:50:03,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:50:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-10-28 14:50:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:50:03,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:03,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:03,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:50:03,163 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:03,164 INFO L82 PathProgramCache]: Analyzing trace with hash 548980148, now seen corresponding path program 1 times [2020-10-28 14:50:03,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:03,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469368020] [2020-10-28 14:50:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:05,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 14:50:05,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-28 14:50:05,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:05,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 14:50:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 14:50:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:05,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:05,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:50:05,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:05,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:50:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 14:50:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:05,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:50:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:50:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:50:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:50:06,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 14:50:06,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:06,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:50:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:50:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:06,695 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-28 14:50:06,905 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-28 14:50:07,409 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-10-28 14:50:07,726 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-10-28 14:50:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:07,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:07,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:07,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:50:07,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:07,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:50:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:07,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:08,282 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-28 14:50:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:50:08,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469368020] [2020-10-28 14:50:08,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:08,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 14:50:08,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692420274] [2020-10-28 14:50:08,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 14:50:08,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 14:50:08,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:50:08,305 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 27 states. [2020-10-28 14:50:09,793 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-28 14:50:12,048 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2020-10-28 14:50:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:13,121 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2020-10-28 14:50:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 14:50:13,122 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2020-10-28 14:50:13,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:13,124 INFO L225 Difference]: With dead ends: 77 [2020-10-28 14:50:13,124 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:50:13,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=157, Invalid=1565, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 14:50:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:50:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2020-10-28 14:50:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:50:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-10-28 14:50:13,143 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 46 [2020-10-28 14:50:13,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:13,144 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-10-28 14:50:13,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 14:50:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-10-28 14:50:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:50:13,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:13,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:13,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:50:13,145 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:13,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1248436012, now seen corresponding path program 1 times [2020-10-28 14:50:13,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:13,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517890867] [2020-10-28 14:50:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:16,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:16,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 14:50:16,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:50:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3338 [2020-10-28 14:50:16,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:16,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 14:50:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 14:50:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:16,688 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-10-28 14:50:16,819 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-28 14:50:17,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:17,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:17,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:17,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:17,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:50:17,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:17,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:17,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:17,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:50:17,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 14:50:17,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:17,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:50:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:50:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:17,441 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-28 14:50:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:50:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:18,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:18,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:50:18,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:50:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 14:50:18,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:18,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:50:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:50:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:18,411 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-28 14:50:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:18,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:18,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:18,929 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-10-28 14:50:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:50:18,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517890867] [2020-10-28 14:50:18,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:18,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:50:18,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821180293] [2020-10-28 14:50:18,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:50:18,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:18,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:50:18,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:50:18,948 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 23 states. [2020-10-28 14:50:20,512 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-28 14:50:21,174 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-28 14:50:21,555 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-28 14:50:21,871 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-28 14:50:22,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:22,541 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2020-10-28 14:50:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:50:22,542 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2020-10-28 14:50:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:22,543 INFO L225 Difference]: With dead ends: 120 [2020-10-28 14:50:22,543 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:50:22,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 14:50:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:50:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-28 14:50:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 14:50:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2020-10-28 14:50:22,558 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 46 [2020-10-28 14:50:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:22,558 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2020-10-28 14:50:22,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:50:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2020-10-28 14:50:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:50:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:22,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:22,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:50:22,560 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:22,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1271068266, now seen corresponding path program 1 times [2020-10-28 14:50:22,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:22,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620584251] [2020-10-28 14:50:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:22,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:26,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:27,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:27,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 14:50:27,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:50:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:50:27,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:27,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:50:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:50:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:50:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:27,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:27,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:27,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:27,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:27,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:50:27,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:27,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:27,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:27,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:27,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:27,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:50:27,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:50:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:50:27,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:27,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:50:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:50:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:50:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:50:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:27,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:27,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:50:27,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:27,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:50:27,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:27,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:50:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:50:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:50:27,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620584251] [2020-10-28 14:50:27,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:27,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:50:27,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519054598] [2020-10-28 14:50:27,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:50:27,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:27,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:50:27,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:50:27,751 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 6 states. [2020-10-28 14:50:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:28,054 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2020-10-28 14:50:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:50:28,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-28 14:50:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:28,057 INFO L225 Difference]: With dead ends: 117 [2020-10-28 14:50:28,057 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 14:50:28,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:50:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 14:50:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-10-28 14:50:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 14:50:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-10-28 14:50:28,066 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-10-28 14:50:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:28,066 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-10-28 14:50:28,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:50:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-10-28 14:50:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:50:28,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:28,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:28,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:50:28,068 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2087755694, now seen corresponding path program 1 times [2020-10-28 14:50:28,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:28,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402764827] [2020-10-28 14:50:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:32,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:32,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 14:50:32,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:50:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4517 [2020-10-28 14:50:32,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:32,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 14:50:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 14:50:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:32,807 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-28 14:50:32,954 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-10-28 14:50:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:33,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:33,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:33,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:50:33,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:33,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:33,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:33,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:50:33,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:33,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 14:50:33,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:33,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:50:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:50:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:33,526 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-28 14:50:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:50:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:34,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:34,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:50:34,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:50:34,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-28 14:50:34,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:34,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:50:34,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:34,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:50:34,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:34,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:34,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:50:35,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402764827] [2020-10-28 14:50:35,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:35,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 14:50:35,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347675108] [2020-10-28 14:50:35,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 14:50:35,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:35,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 14:50:35,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:50:35,014 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 22 states. [2020-10-28 14:50:36,273 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-28 14:50:36,798 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2020-10-28 14:50:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:37,403 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-28 14:50:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:50:37,405 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 47 [2020-10-28 14:50:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:37,406 INFO L225 Difference]: With dead ends: 73 [2020-10-28 14:50:37,407 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 14:50:37,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 14:50:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 14:50:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-10-28 14:50:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:50:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-28 14:50:37,416 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2020-10-28 14:50:37,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:37,416 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-28 14:50:37,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 14:50:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-28 14:50:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 14:50:37,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:37,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:37,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:50:37,417 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:37,417 INFO L82 PathProgramCache]: Analyzing trace with hash -711716219, now seen corresponding path program 2 times [2020-10-28 14:50:37,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:37,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954070304] [2020-10-28 14:50:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:50:39,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-28 14:50:39,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 14:50:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:50:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:39,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:50:39,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:40,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:40,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:50:40,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 14:50:40,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:40,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:50:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:50:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:40,470 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-28 14:50:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:50:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:41,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:41,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:50:41,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-28 14:50:41,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:41,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:50:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:50:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:41,711 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-28 14:50:41,944 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-28 14:50:43,504 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 141 DAG size of output: 93 [2020-10-28 14:50:44,250 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2020-10-28 14:50:44,807 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-28 14:50:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:44,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:44,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:44,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:44,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:50:44,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:44,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:50:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:50:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:45,185 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-10-28 14:50:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:50:45,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954070304] [2020-10-28 14:50:45,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:45,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:50:45,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445189010] [2020-10-28 14:50:45,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:50:45,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:45,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:50:45,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:50:45,212 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 28 states. [2020-10-28 14:50:47,070 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-28 14:50:47,382 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-28 14:50:51,916 WARN L193 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 159 DAG size of output: 144 [2020-10-28 14:50:53,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:53,107 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-10-28 14:50:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 14:50:53,109 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 48 [2020-10-28 14:50:53,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:53,110 INFO L225 Difference]: With dead ends: 62 [2020-10-28 14:50:53,110 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 14:50:53,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 14:50:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 14:50:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-28 14:50:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:50:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-28 14:50:53,120 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2020-10-28 14:50:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:53,121 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-28 14:50:53,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:50:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-28 14:50:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 14:50:53,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:53,121 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:53,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:50:53,122 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:53,122 INFO L82 PathProgramCache]: Analyzing trace with hash -710107505, now seen corresponding path program 2 times [2020-10-28 14:50:53,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:53,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977497544] [2020-10-28 14:50:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:55,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:50:55,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1886 [2020-10-28 14:50:55,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:55,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 14:50:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 14:50:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:55,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:55,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:55,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:50:55,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:55,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:55,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:55,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:55,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:50:55,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 14:50:55,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:55,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:50:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:50:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:56,161 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-10-28 14:50:56,480 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-28 14:50:56,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:50:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:57,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:50:57,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 14:50:57,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:57,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:50:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:50:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:50:57,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:57,860 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-28 14:50:58,329 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-10-28 14:50:59,284 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 99 [2020-10-28 14:50:59,897 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2020-10-28 14:51:00,239 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-28 14:51:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:00,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:51:00,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:51:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:01,181 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-10-28 14:51:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:51:01,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977497544] [2020-10-28 14:51:01,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:01,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 14:51:01,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53708826] [2020-10-28 14:51:01,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 14:51:01,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:01,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 14:51:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=804, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:51:01,214 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 30 states. [2020-10-28 14:51:02,307 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-28 14:51:02,827 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-28 14:51:03,102 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 14:51:03,572 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-28 14:51:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:05,816 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-28 14:51:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 14:51:05,817 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 48 [2020-10-28 14:51:05,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:05,818 INFO L225 Difference]: With dead ends: 60 [2020-10-28 14:51:05,818 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 14:51:05,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=173, Invalid=1807, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 14:51:05,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 14:51:05,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-28 14:51:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:51:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-28 14:51:05,829 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 48 [2020-10-28 14:51:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:05,829 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-28 14:51:05,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 14:51:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-28 14:51:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 14:51:05,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:05,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:05,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:51:05,830 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:05,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:05,831 INFO L82 PathProgramCache]: Analyzing trace with hash 485826720, now seen corresponding path program 3 times [2020-10-28 14:51:05,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:05,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697823949] [2020-10-28 14:51:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:05,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 14:51:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1706 [2020-10-28 14:51:07,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:07,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:51:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:07,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:07,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:07,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:07,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:07,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:07,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:07,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:07,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:51:07,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 14:51:07,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:07,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:51:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:51:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:07,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:07,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:07,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:51:07,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:07,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:51:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:07,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:07,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:07,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:07,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:51:07,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:07,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:07,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:07,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:07,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:07,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:51:07,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697823949] [2020-10-28 14:51:07,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:07,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:51:07,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904934473] [2020-10-28 14:51:07,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:51:07,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:51:07,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:51:07,992 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 9 states. [2020-10-28 14:51:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:08,432 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2020-10-28 14:51:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:51:08,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-28 14:51:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:08,435 INFO L225 Difference]: With dead ends: 60 [2020-10-28 14:51:08,435 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:51:08,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:51:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:51:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-28 14:51:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:51:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-28 14:51:08,443 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2020-10-28 14:51:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:08,444 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-28 14:51:08,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:51:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-28 14:51:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 14:51:08,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:08,444 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:08,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 14:51:08,445 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:08,445 INFO L82 PathProgramCache]: Analyzing trace with hash 487435434, now seen corresponding path program 3 times [2020-10-28 14:51:08,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:08,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319272558] [2020-10-28 14:51:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 14:51:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:51:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 14:51:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:51:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:14,760 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2020-10-28 14:51:15,708 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 57 [2020-10-28 14:51:16,100 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-28 14:51:16,453 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-28 14:51:16,600 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-28 14:51:16,808 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2020-10-28 14:51:17,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:17,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:17,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:17,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:17,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:17,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:17,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:17,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:51:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:51:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:18,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-28 14:51:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:18,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:51:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:51:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,719 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-28 14:51:20,474 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 81 [2020-10-28 14:51:22,859 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 219 DAG size of output: 169