/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2n_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:31:47,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:31:47,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:31:47,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:31:47,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:31:47,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:31:47,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:31:47,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:31:47,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:31:47,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:31:47,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:31:47,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:31:47,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:31:47,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:31:47,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:31:47,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:31:47,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:31:47,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:31:47,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:31:47,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:31:47,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:31:47,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:31:47,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:31:47,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:31:47,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:31:47,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:31:47,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:31:47,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:31:47,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:31:47,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:31:47,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:31:47,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:31:47,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:31:47,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:31:47,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:31:47,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:31:47,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:31:47,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:31:47,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:31:47,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:31:47,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:31:47,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:31:47,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:31:47,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:31:47,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:31:47,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:31:47,507 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:31:47,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:31:47,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:31:47,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:31:47,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:31:47,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:31:47,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:31:47,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:31:47,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:31:47,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:31:47,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:31:47,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:31:47,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:31:47,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:31:47,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:31:47,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:31:47,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:31:47,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:31:47,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:31:47,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:31:47,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:31:47,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:31:47,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:31:47,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:31:47,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:31:47,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:31:47,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:31:48,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:31:48,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:31:48,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:31:48,011 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:31:48,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_equal.i [2020-10-29 09:31:48,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7963dcada/f8f16c445c4a4fa58577c8a636ec9671/FLAG1ab125b1b [2020-10-29 09:31:48,874 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:31:48,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_prepend_equal.i [2020-10-29 09:31:48,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7963dcada/f8f16c445c4a4fa58577c8a636ec9671/FLAG1ab125b1b [2020-10-29 09:31:49,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7963dcada/f8f16c445c4a4fa58577c8a636ec9671 [2020-10-29 09:31:49,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:31:49,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:31:49,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:31:49,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:31:49,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:31:49,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38663e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49, skipping insertion in model container [2020-10-29 09:31:49,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:31:49,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:31:49,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:31:49,648 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:31:49,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:31:49,777 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:31:49,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49 WrapperNode [2020-10-29 09:31:49,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:31:49,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:31:49,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:31:49,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:31:49,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... [2020-10-29 09:31:49,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:31:49,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:31:49,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:31:49,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:31:49,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:31:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:31:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:31:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:31:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:31:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:31:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:31:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:31:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-29 09:31:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-29 09:31:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2020-10-29 09:31:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:31:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:31:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:31:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:31:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:31:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:31:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:31:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:31:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:31:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:31:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:31:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:31:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:31:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:31:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:31:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:31:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:31:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:31:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:31:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:31:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:31:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:31:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:31:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:31:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:31:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:31:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:31:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:31:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:31:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:31:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:31:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:31:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:31:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:31:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:31:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:31:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:31:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:31:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:31:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:31:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:31:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:31:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:31:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:31:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:31:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:31:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:31:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:31:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:31:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:31:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:31:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:31:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:31:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:31:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:31:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:31:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:31:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:31:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:31:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:31:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:31:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:31:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:31:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:31:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:31:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:31:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:31:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:31:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:31:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:31:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:31:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:31:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:31:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:31:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:31:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:31:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:31:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:31:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:31:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:31:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:31:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:31:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-29 09:31:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-29 09:31:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:31:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:31:50,032 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2020-10-29 09:31:50,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:31:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:31:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:31:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:31:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:31:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:31:50,476 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:31:50,755 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:31:50,757 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 09:31:50,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:31:50 BoogieIcfgContainer [2020-10-29 09:31:50,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:31:50,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:31:50,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:31:50,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:31:50,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:31:49" (1/3) ... [2020-10-29 09:31:50,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ef0808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:31:50, skipping insertion in model container [2020-10-29 09:31:50,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:49" (2/3) ... [2020-10-29 09:31:50,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ef0808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:31:50, skipping insertion in model container [2020-10-29 09:31:50,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:31:50" (3/3) ... [2020-10-29 09:31:50,778 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_equal.i [2020-10-29 09:31:50,806 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:31:50,812 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:31:50,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:31:50,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:31:50,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:31:50,855 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:31:50,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:31:50,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:31:50,855 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:31:50,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:31:50,855 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:31:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-29 09:31:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:31:50,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:50,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:50,886 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:50,893 INFO L82 PathProgramCache]: Analyzing trace with hash 201861616, now seen corresponding path program 1 times [2020-10-29 09:31:50,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:50,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931196769] [2020-10-29 09:31:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:31:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:31:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-29 09:31:51,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:51,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:31:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:52,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:52,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:31:52,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:52,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:52,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:52,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:31:52,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:31:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:31:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:31:52,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:52,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 09:31:52,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:31:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:52,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:31:52,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:31:52,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931196769] [2020-10-29 09:31:52,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:31:52,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:31:52,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609657201] [2020-10-29 09:31:52,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:31:52,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:52,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:31:52,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:31:52,247 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 7 states. [2020-10-29 09:31:52,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:52,750 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-10-29 09:31:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:31:52,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-29 09:31:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:52,762 INFO L225 Difference]: With dead ends: 97 [2020-10-29 09:31:52,762 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:31:52,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:31:52,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:31:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-29 09:31:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 09:31:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-29 09:31:52,821 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 30 [2020-10-29 09:31:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:52,822 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-29 09:31:52,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:31:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-29 09:31:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:31:52,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:52,825 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] [2020-10-29 09:31:52,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:31:52,826 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash -776933073, now seen corresponding path program 1 times [2020-10-29 09:31:52,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:52,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136629619] [2020-10-29 09:31:52,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:57,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:31:57,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:31:57,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:31:57,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:57,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:57,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:31:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:31:57,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:57,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:57,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:31:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:57,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:57,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:58,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:58,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:31:58,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 09:31:58,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:58,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:31:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:31:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:31:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:58,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:58,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:58,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:58,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:31:58,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:58,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:31:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:31:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:31:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 09:31:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:31:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:58,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:58,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:58,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:31:58,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:58,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:31:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:31:58,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136629619] [2020-10-29 09:31:58,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:31:58,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-29 09:31:58,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157146116] [2020-10-29 09:31:58,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:31:58,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:58,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:31:58,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:31:58,637 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 17 states. [2020-10-29 09:31:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:59,247 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-29 09:31:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:31:59,248 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2020-10-29 09:31:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:59,251 INFO L225 Difference]: With dead ends: 46 [2020-10-29 09:31:59,251 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 09:31:59,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:31:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 09:31:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-10-29 09:31:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 09:31:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-29 09:31:59,269 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 39 [2020-10-29 09:31:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:59,271 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-29 09:31:59,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:31:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-29 09:31:59,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:31:59,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:59,274 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] [2020-10-29 09:31:59,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:31:59,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:59,278 INFO L82 PathProgramCache]: Analyzing trace with hash -775324359, now seen corresponding path program 1 times [2020-10-29 09:31:59,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:59,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071118165] [2020-10-29 09:31:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:00,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:00,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:32:00,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:00,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-10-29 09:32:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:00,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:32:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:32:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:00,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:00,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:00,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:00,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:00,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:00,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:00,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:00,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:32:00,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:00,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:32:00,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:00,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:00,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:00,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:32:00,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:00,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:00,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:00,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:00,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:00,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:00,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 09:32:00,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:00,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:32:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:32:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:01,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:01,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 09:32:01,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:01,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:32:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:32:01,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071118165] [2020-10-29 09:32:01,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:32:01,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 09:32:01,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959000902] [2020-10-29 09:32:01,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:32:01,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:01,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:32:01,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:32:01,213 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 13 states. [2020-10-29 09:32:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:01,736 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-29 09:32:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:32:01,737 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-29 09:32:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:01,741 INFO L225 Difference]: With dead ends: 43 [2020-10-29 09:32:01,741 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:32:01,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:32:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:32:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-29 09:32:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:32:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-29 09:32:01,763 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 39 [2020-10-29 09:32:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:01,764 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-29 09:32:01,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:32:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-29 09:32:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:32:01,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:01,768 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] [2020-10-29 09:32:01,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:32:01,768 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:01,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2034564054, now seen corresponding path program 1 times [2020-10-29 09:32:01,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:01,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168861855] [2020-10-29 09:32:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:02,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:05,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:05,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:32:05,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:32:05,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3828 [2020-10-29 09:32:05,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:05,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:05,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:32:05,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:05,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:32:05,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:05,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:05,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:05,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:05,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:05,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:32:05,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:05,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:05,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:05,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:05,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:05,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 09:32:05,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:05,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:32:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:32:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:06,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:06,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:06,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:06,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:32:06,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:06,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:06,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:06,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 09:32:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:06,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:32:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:32:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:06,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:06,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:06,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 09:32:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:06,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:32:06,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168861855] [2020-10-29 09:32:06,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:06,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:32:06,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971746743] [2020-10-29 09:32:06,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:32:06,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:32:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:32:06,555 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 21 states. [2020-10-29 09:32:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:07,638 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-29 09:32:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:32:07,639 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-10-29 09:32:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:07,641 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:32:07,641 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 09:32:07,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:32:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 09:32:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-29 09:32:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 09:32:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-29 09:32:07,651 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 41 [2020-10-29 09:32:07,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:07,652 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-29 09:32:07,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:32:07,652 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-29 09:32:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:32:07,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:07,653 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] [2020-10-29 09:32:07,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:32:07,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2032955340, now seen corresponding path program 1 times [2020-10-29 09:32:07,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:07,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587507486] [2020-10-29 09:32:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:32:09,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-29 09:32:09,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:32:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:32:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:09,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:09,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 09:32:09,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:32:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:32:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:09,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:32:09,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:09,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:09,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:32:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:10,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:10,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:10,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 09:32:10,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:10,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:32:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:32:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:10,569 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 09:32:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:10,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:10,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 09:32:10,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:10,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:11,015 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-29 09:32:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:32:11,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587507486] [2020-10-29 09:32:11,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:11,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:32:11,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374088583] [2020-10-29 09:32:11,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:32:11,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:11,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:32:11,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:32:11,041 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 23 states. [2020-10-29 09:32:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:12,929 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-29 09:32:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:32:12,930 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2020-10-29 09:32:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:12,932 INFO L225 Difference]: With dead ends: 46 [2020-10-29 09:32:12,932 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:32:12,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:32:12,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:32:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-29 09:32:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:32:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-29 09:32:12,943 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 41 [2020-10-29 09:32:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:12,943 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-29 09:32:12,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:32:12,944 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-29 09:32:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:32:12,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:12,945 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] [2020-10-29 09:32:12,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:32:12,945 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash 562840677, now seen corresponding path program 2 times [2020-10-29 09:32:12,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:12,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689041314] [2020-10-29 09:32:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:13,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:32:13,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-29 09:32:13,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:13,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:32:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:32:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:32:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:13,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:32:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:13,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:13,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:13,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 09:32:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:13,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:32:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:13,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:13,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:13,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:32:13,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:13,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:13,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:13,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:32:13,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:13,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:32:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:13,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:13,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:13,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:32:13,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:13,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:13,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:32:13,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689041314] [2020-10-29 09:32:13,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:13,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:32:13,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137718104] [2020-10-29 09:32:13,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:32:13,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:13,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:32:13,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:32:13,779 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 12 states. [2020-10-29 09:32:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:14,208 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-29 09:32:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:32:14,208 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-29 09:32:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:14,210 INFO L225 Difference]: With dead ends: 69 [2020-10-29 09:32:14,210 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 09:32:14,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:32:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 09:32:14,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-29 09:32:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:32:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-29 09:32:14,224 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 43 [2020-10-29 09:32:14,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:14,224 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-29 09:32:14,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:32:14,224 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-29 09:32:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:32:14,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:14,226 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] [2020-10-29 09:32:14,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:32:14,226 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash 564449391, now seen corresponding path program 2 times [2020-10-29 09:32:14,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:14,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646760016] [2020-10-29 09:32:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:17,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:17,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:32:17,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:32:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3544 [2020-10-29 09:32:17,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:17,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:32:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:32:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:18,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:18,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:18,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:18,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:18,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:18,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:18,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 09:32:18,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:18,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:32:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:32:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:32:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:18,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:32:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:18,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:18,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:18,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:18,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 09:32:18,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:32:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,079 WARN L193 SmtUtils]: Spent 16.59 s on a formula simplification. DAG size of input: 385 DAG size of output: 273 [2020-10-29 09:32:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:37,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 09:32:37,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:32:38,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646760016] [2020-10-29 09:32:38,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:38,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:32:38,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248965390] [2020-10-29 09:32:38,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:32:38,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:38,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:32:38,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:32:38,141 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 24 states. [2020-10-29 09:32:42,713 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification that was a NOOP. DAG size: 269 [2020-10-29 09:32:47,712 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification that was a NOOP. DAG size: 278 [2020-10-29 09:32:50,532 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-29 09:32:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:51,062 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-29 09:32:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:32:51,063 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 43 [2020-10-29 09:32:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:51,066 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:32:51,066 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:32:51,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=149, Invalid=1257, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 09:32:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:32:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-29 09:32:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:32:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-29 09:32:51,094 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 43 [2020-10-29 09:32:51,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:51,095 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-29 09:32:51,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:32:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-29 09:32:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:32:51,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:51,098 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:32:51,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:32:51,099 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:51,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1286312291, now seen corresponding path program 3 times [2020-10-29 09:32:51,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:51,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982113320] [2020-10-29 09:32:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:51,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:32:52,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1550 [2020-10-29 09:32:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:52,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 09:32:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 09:32:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:53,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:53,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:53,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:53,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:53,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:53,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:32:53,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 09:32:53,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:53,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:32:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:32:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:53,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:53,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:53,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:53,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:53,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:32:53,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:53,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:53,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:32:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:53,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:53,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:53,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:53,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:32:53,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:53,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:32:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 09:32:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:54,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:54,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:54,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 09:32:54,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:54,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:32:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:32:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:54,593 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 09:32:56,993 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 176 DAG size of output: 130 [2020-10-29 09:32:57,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:57,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:57,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:57,693 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-29 09:32:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:32:57,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982113320] [2020-10-29 09:32:57,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:57,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:32:57,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836160608] [2020-10-29 09:32:57,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:32:57,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:57,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:32:57,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:32:57,735 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 27 states. [2020-10-29 09:33:00,377 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-29 09:33:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:33:00,868 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-29 09:33:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:33:00,869 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2020-10-29 09:33:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:33:00,870 INFO L225 Difference]: With dead ends: 52 [2020-10-29 09:33:00,870 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:33:00,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=167, Invalid=1725, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:33:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:33:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-29 09:33:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:33:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 09:33:00,882 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 52 [2020-10-29 09:33:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:33:00,882 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 09:33:00,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:33:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 09:33:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:33:00,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:33:00,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:33:00,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:33:00,884 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:33:00,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:33:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1284703577, now seen corresponding path program 3 times [2020-10-29 09:33:00,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:33:00,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244084709] [2020-10-29 09:33:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:33:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:33:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:33:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2666 [2020-10-29 09:33:03,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:03,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 09:33:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:33:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:33:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:33:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:03,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:33:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:33:03,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:03,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:04,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:33:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:04,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:04,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:33:04,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 09:33:04,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:04,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:33:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:33:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:04,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:33:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:04,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:33:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:04,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:33:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:33:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:33:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:04,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:04,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:04,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:04,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:33:04,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:04,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:33:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:33:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:33:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 09:33:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:04,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:33:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 09:33:04,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:04,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:33:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:33:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:33:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:05,607 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-29 09:33:06,943 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2020-10-29 09:33:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:33:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:33:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:07,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:33:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:33:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:33:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:07,584 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-29 09:33:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:33:07,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244084709] [2020-10-29 09:33:07,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:33:07,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:33:07,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060318789] [2020-10-29 09:33:07,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:33:07,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:33:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:33:07,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:33:07,612 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 28 states. [2020-10-29 09:33:08,340 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-29 09:33:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:33:10,666 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-29 09:33:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:33:10,667 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2020-10-29 09:33:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:33:10,669 INFO L225 Difference]: With dead ends: 51 [2020-10-29 09:33:10,669 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:33:10,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=138, Invalid=1584, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:33:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:33:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-29 09:33:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:33:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-29 09:33:10,699 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 52 [2020-10-29 09:33:10,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:33:10,699 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-29 09:33:10,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:33:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-29 09:33:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:33:10,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:33:10,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:33:10,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:33:10,706 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:33:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:33:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1921720808, now seen corresponding path program 4 times [2020-10-29 09:33:10,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:33:10,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15641376] [2020-10-29 09:33:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:33:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:11,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:33:11,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:33:11,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-29 09:33:11,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:11,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:33:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:33:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:33:11,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:11,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:33:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:11,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:33:11,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:33:11,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:11,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:33:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:11,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:33:11,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:33:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 09:33:11,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:11,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:33:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:33:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:33:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:11,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:33:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:11,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:33:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:11,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:11,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:33:11,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:11,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 09:33:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:33:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:11,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:33:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:33:11,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:11,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 09:33:11,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15641376] [2020-10-29 09:33:11,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:33:11,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:33:11,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620585165] [2020-10-29 09:33:11,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:33:11,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:33:11,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:33:11,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:33:11,817 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 9 states. [2020-10-29 09:33:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:33:12,154 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-29 09:33:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:33:12,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-29 09:33:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:33:12,156 INFO L225 Difference]: With dead ends: 54 [2020-10-29 09:33:12,156 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 09:33:12,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:33:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 09:33:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-29 09:33:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:33:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 09:33:12,169 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 54 [2020-10-29 09:33:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:33:12,170 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 09:33:12,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:33:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 09:33:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:33:12,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:33:12,171 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:33:12,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:33:12,172 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:33:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:33:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1920112094, now seen corresponding path program 4 times [2020-10-29 09:33:12,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:33:12,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421781409] [2020-10-29 09:33:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:33:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:13,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:13,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:33:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:33:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-10-29 09:33:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:13,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:33:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:33:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:33:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:33:14,147 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 41 [2020-10-29 09:33:14,348 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 44 [2020-10-29 09:33:14,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:33:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:14,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:14,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:33:14,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:14,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:33:14,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:14,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:33:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:14,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:33:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:33:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:15,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:15,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:15,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:15,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:33:15,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:15,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:33:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:33:15,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:33:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:15,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:15,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:33:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:15,969 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-29 09:33:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 09:33:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:16,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:16,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:33:16,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 09:33:16,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:16,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:33:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:33:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:33:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:33:40,457 WARN L193 SmtUtils]: Spent 21.46 s on a formula simplification. DAG size of input: 648 DAG size of output: 271 [2020-10-29 09:33:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:33:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:41,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:41,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:33:41,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:41,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:33:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:33:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:33:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:33:42,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421781409] [2020-10-29 09:33:42,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:33:42,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 09:33:42,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284101220] [2020-10-29 09:33:42,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 09:33:42,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:33:42,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 09:33:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:33:42,241 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 30 states. [2020-10-29 09:33:50,726 WARN L193 SmtUtils]: Spent 7.76 s on a formula simplification. DAG size of input: 259 DAG size of output: 257 [2020-10-29 09:33:51,402 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-29 09:34:00,698 WARN L193 SmtUtils]: Spent 8.93 s on a formula simplification. DAG size of input: 268 DAG size of output: 266 [2020-10-29 09:34:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:34:05,763 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-29 09:34:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:34:05,764 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 54 [2020-10-29 09:34:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:34:05,766 INFO L225 Difference]: With dead ends: 74 [2020-10-29 09:34:05,766 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 09:34:05,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:34:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 09:34:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-29 09:34:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:34:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-29 09:34:05,785 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 54 [2020-10-29 09:34:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:34:05,785 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-29 09:34:05,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 09:34:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-29 09:34:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:34:05,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:34:05,787 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:34:05,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:34:05,787 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:34:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:34:05,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1656958186, now seen corresponding path program 5 times [2020-10-29 09:34:05,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:34:05,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929342651] [2020-10-29 09:34:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:34:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:10,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 09:34:10,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:34:10,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:34:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:10,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 09:34:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:34:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 09:34:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:11,064 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-29 09:34:11,196 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-29 09:34:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:34:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:11,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:11,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:11,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:34:11,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:11,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:34:11,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:11,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:11,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:34:11,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:11,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:34:11,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:34:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:12,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:34:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 09:34:12,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:12,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:34:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:34:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:12,985 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-29 09:34:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:34:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:13,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:13,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:34:13,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:13,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:34:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:34:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:13,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:34:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:13,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:13,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:34:13,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:13,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:34:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:34:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:34:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:13,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:13,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:13,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:13,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 09:34:13,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:13,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:34:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:34:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:14,524 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-29 09:34:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:34:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:34:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 09:34:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:14,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:34:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:34:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:15,478 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-29 09:34:17,181 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2020-10-29 09:34:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:34:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:17,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:17,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 09:34:17,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:17,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:34:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:34:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:18,211 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2020-10-29 09:34:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:34:18,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929342651] [2020-10-29 09:34:18,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:34:18,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 09:34:18,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708596477] [2020-10-29 09:34:18,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 09:34:18,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:34:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 09:34:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1050, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:34:18,251 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 34 states. [2020-10-29 09:34:19,294 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-29 09:34:20,184 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-29 09:34:21,474 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-29 09:34:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:34:24,244 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-29 09:34:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:34:24,247 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 63 [2020-10-29 09:34:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:34:24,248 INFO L225 Difference]: With dead ends: 58 [2020-10-29 09:34:24,248 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 09:34:24,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=193, Invalid=2459, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:34:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 09:34:24,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-29 09:34:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:34:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-29 09:34:24,260 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 63 [2020-10-29 09:34:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:34:24,261 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-29 09:34:24,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 09:34:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-29 09:34:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 09:34:24,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:34:24,262 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:34:24,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:34:24,262 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:34:24,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:34:24,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1073247333, now seen corresponding path program 5 times [2020-10-29 09:34:24,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:34:24,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153965585] [2020-10-29 09:34:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:34:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:34:25,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:34:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-29 09:34:25,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:34:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:34:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 09:34:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:34:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:25,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:34:25,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:34:25,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:34:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:34:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:34:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:34:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:25,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:34:25,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 09:34:25,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:34:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:34:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:34:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:25,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:34:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:34:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:34:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:34:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:25,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:34:25,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:34:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:34:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:34:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:25,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:34:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:34:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:25,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:34:25,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:34:25,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:34:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:34:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:34:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:25,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:25,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:34:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 09:34:25,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153965585] [2020-10-29 09:34:25,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:34:25,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:34:25,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475043248] [2020-10-29 09:34:25,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:34:25,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:34:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:34:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:34:25,735 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 16 states. [2020-10-29 09:34:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:34:26,636 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2020-10-29 09:34:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:34:26,637 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-29 09:34:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:34:26,638 INFO L225 Difference]: With dead ends: 85 [2020-10-29 09:34:26,638 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 09:34:26,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:34:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 09:34:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2020-10-29 09:34:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 09:34:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-10-29 09:34:26,654 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 65 [2020-10-29 09:34:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:34:26,655 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-10-29 09:34:26,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:34:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-10-29 09:34:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 09:34:26,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:34:26,656 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:34:26,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:34:26,656 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:34:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:34:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1071638619, now seen corresponding path program 6 times [2020-10-29 09:34:26,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:34:26,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697282955] [2020-10-29 09:34:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:34:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:26,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:28,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:31,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:34:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:34:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 09:34:31,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:31,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 09:34:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:34:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 09:34:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:31,984 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-10-29 09:34:32,194 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-10-29 09:34:32,399 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-29 09:34:32,671 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-10-29 09:34:32,859 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2020-10-29 09:34:32,995 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-10-29 09:34:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:34:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:33,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:33,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:34:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:34:33,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:33,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:34:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:34:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:34:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:33,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:34:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:34:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:34,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:34,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:34,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:34,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:34:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:34,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:34:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:34:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:34:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:35,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 09:34:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:35,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:35,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 09:34:35,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:35,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:34:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:34:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:35,749 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-29 09:34:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:34:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:35,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:35,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:35,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:35,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:34:35,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:35,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:34:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:34:35,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:36,199 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-29 09:34:36,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:34:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:36,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:34:36,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 09:34:36,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:36,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:34:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:34:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:37,965 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-29 09:35:03,858 WARN L193 SmtUtils]: Spent 24.64 s on a formula simplification. DAG size of input: 516 DAG size of output: 297 [2020-10-29 09:35:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:35:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:35:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:35:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:35:06,064 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-10-29 09:35:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:35:06,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697282955] [2020-10-29 09:35:06,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:35:06,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 09:35:06,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967598884] [2020-10-29 09:35:06,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 09:35:06,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:35:06,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 09:35:06,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1102, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:35:06,121 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 35 states. [2020-10-29 09:35:14,245 WARN L193 SmtUtils]: Spent 7.21 s on a formula simplification that was a NOOP. DAG size: 290 [2020-10-29 09:35:15,145 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-29 09:35:23,585 WARN L193 SmtUtils]: Spent 7.87 s on a formula simplification that was a NOOP. DAG size: 299 [2020-10-29 09:35:25,382 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 09:35:29,092 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 09:35:29,437 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 09:35:29,772 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 09:35:30,089 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-29 09:35:30,390 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-29 09:35:30,689 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 09:35:30,990 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 09:35:31,504 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-29 09:35:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:35:32,308 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-29 09:35:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:35:32,311 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 65 [2020-10-29 09:35:32,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:35:32,312 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:35:32,312 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 09:35:32,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=204, Invalid=2448, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:35:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 09:35:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-29 09:35:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:35:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-10-29 09:35:32,327 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 65 [2020-10-29 09:35:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:35:32,327 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-10-29 09:35:32,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 09:35:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-10-29 09:35:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 09:35:32,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:35:32,328 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:35:32,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:35:32,329 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:35:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:35:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1446134829, now seen corresponding path program 6 times [2020-10-29 09:35:32,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:35:32,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990161407] [2020-10-29 09:35:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:35:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:32,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:34,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 09:35:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:35:38,142 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-29 09:35:38,721 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-29 09:35:39,257 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 62 [2020-10-29 09:35:39,916 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 57 [2020-10-29 09:35:40,418 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-29 09:35:40,900 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-29 09:35:41,250 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-10-29 09:35:41,510 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-10-29 09:35:41,671 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2020-10-29 09:35:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:35:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:42,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:35:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:35:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:35:42,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:42,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:35:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:35:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:35:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:35:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:35:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:35:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:35:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 09:35:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:35:43,568 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28