/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:50:35,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:50:35,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:50:35,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:50:35,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:50:35,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:50:35,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:50:35,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:50:35,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:50:35,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:50:35,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:50:35,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:50:35,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:50:35,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:50:35,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:50:35,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:50:35,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:50:35,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:50:35,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:50:35,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:50:35,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:50:35,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:50:35,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:50:35,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:50:35,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:50:35,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:50:35,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:50:35,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:50:35,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:50:35,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:50:35,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:50:35,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:50:35,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:50:35,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:50:35,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:50:35,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:50:35,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:50:35,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:50:35,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:50:35,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:50:35,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:50:35,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:50:35,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:50:35,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:50:35,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:50:35,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:50:35,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:50:35,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:50:35,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:50:35,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:50:35,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:50:35,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:50:35,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:50:35,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:50:35,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:50:35,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:50:35,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:50:35,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:50:35,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:50:35,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:50:35,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:50:35,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:50:35,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:50:35,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:50:35,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:50:35,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:50:35,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:50:35,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:50:35,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:50:35,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:50:35,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:50:35,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:50:36,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:50:36,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:50:36,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:50:36,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:50:36,065 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:50:36,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2020-10-28 14:50:36,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da8aa8d9a/f52c476d21154cb5aa8238bf556d2fe8/FLAGade82f754 [2020-10-28 14:50:36,891 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:50:36,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2020-10-28 14:50:36,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da8aa8d9a/f52c476d21154cb5aa8238bf556d2fe8/FLAGade82f754 [2020-10-28 14:50:37,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da8aa8d9a/f52c476d21154cb5aa8238bf556d2fe8 [2020-10-28 14:50:37,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:50:37,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:50:37,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:50:37,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:50:37,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:50:37,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:37,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a8c0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37, skipping insertion in model container [2020-10-28 14:50:37,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:37,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:50:37,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:50:37,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:50:37,740 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:50:37,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:50:37,925 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:50:37,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37 WrapperNode [2020-10-28 14:50:37,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:50:37,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:50:37,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:50:37,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:50:37,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:37,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:37,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:37,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:38,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:38,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:38,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... [2020-10-28 14:50:38,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:50:38,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:50:38,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:50:38,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:50:38,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:50:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:50:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:50:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:50:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:50:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:50:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:50:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:50:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-28 14:50:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-28 14:50:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-28 14:50:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:50:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:50:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:50:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:50:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:50:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:50:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:50:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:50:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:50:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:50:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:50:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:50:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:50:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:50:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:50:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:50:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:50:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:50:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:50:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:50:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:50:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:50:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:50:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:50:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:50:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:50:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:50:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:50:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:50:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:50:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:50:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:50:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:50:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:50:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:50:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:50:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:50:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:50:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:50:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:50:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:50:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:50:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:50:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:50:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:50:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:50:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:50:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:50:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:50:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:50:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:50:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:50:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:50:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:50:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:50:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:50:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:50:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:50:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:50:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:50:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:50:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:50:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:50:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:50:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:50:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:50:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:50:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:50:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:50:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:50:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:50:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:50:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:50:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:50:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:50:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:50:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:50:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:50:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:50:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:50:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:50:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:50:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:50:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:50:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:50:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:50:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:50:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:50:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:50:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:50:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:50:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:50:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:50:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:50:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-28 14:50:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-28 14:50:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:50:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:50:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-28 14:50:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:50:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:50:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:50:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:50:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:50:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:50:38,590 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:50:38,865 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:50:38,865 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:50:38,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:50:38 BoogieIcfgContainer [2020-10-28 14:50:38,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:50:38,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:50:38,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:50:38,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:50:38,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:50:37" (1/3) ... [2020-10-28 14:50:38,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c93d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:50:38, skipping insertion in model container [2020-10-28 14:50:38,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:37" (2/3) ... [2020-10-28 14:50:38,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c93d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:50:38, skipping insertion in model container [2020-10-28 14:50:38,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:50:38" (3/3) ... [2020-10-28 14:50:38,877 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2020-10-28 14:50:38,890 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:50:38,896 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:50:38,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:50:38,938 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:50:38,939 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:50:38,939 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:50:38,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:50:38,939 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:50:38,939 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:50:38,939 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:50:38,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:50:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-28 14:50:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:50:38,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:38,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:38,967 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2003178217, now seen corresponding path program 1 times [2020-10-28 14:50:38,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:38,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388244210] [2020-10-28 14:50:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:50:39,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:50:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-28 14:50:39,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 14:50:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:50:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:39,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:50:39,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:39,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:39,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:50:39,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:50:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:50:39,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:50:39,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:39,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:39,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:50:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:39,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:50:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:50:39,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388244210] [2020-10-28 14:50:39,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:50:39,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:50:39,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482879375] [2020-10-28 14:50:39,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:50:39,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:39,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:50:39,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:50:39,996 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-28 14:50:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:40,288 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2020-10-28 14:50:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:50:40,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 14:50:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:40,303 INFO L225 Difference]: With dead ends: 103 [2020-10-28 14:50:40,303 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:50:40,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:50:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:50:40,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-28 14:50:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 14:50:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-28 14:50:40,382 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 31 [2020-10-28 14:50:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:40,384 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-28 14:50:40,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:50:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-28 14:50:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:50:40,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:40,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:40,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:50:40,390 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:40,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2011489906, now seen corresponding path program 1 times [2020-10-28 14:50:40,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:40,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84024826] [2020-10-28 14:50:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:41,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:41,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:50:41,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:50:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-10-28 14:50:41,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:41,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:50:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:50:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:41,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:41,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:41,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:50:41,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:41,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:50:41,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:41,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:50:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:50:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:50:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:50:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:41,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:50:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:50:41,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:41,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:50:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:41,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:41,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:41,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:41,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:50:41,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:41,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:50:41,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84024826] [2020-10-28 14:50:41,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:50:41,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:50:41,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892494011] [2020-10-28 14:50:41,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:50:41,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:41,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:50:41,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:50:41,970 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 7 states. [2020-10-28 14:50:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:42,247 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-10-28 14:50:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:50:42,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-28 14:50:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:42,252 INFO L225 Difference]: With dead ends: 70 [2020-10-28 14:50:42,252 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 14:50:42,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:50:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 14:50:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-28 14:50:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 14:50:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-28 14:50:42,263 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 31 [2020-10-28 14:50:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:42,263 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-28 14:50:42,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:50:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-28 14:50:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:50:42,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:42,265 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] [2020-10-28 14:50:42,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:50:42,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1079017718, now seen corresponding path program 1 times [2020-10-28 14:50:42,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:42,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122507278] [2020-10-28 14:50:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 14:50:47,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 14:50:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 14:50:47,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:47,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:50:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:50:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:47,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:47,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:50:47,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:47,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:47,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:47,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:47,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:47,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:47,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:50:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 14:50:47,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:47,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:50:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:50:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:50:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:50:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:50:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:47,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:47,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:50:47,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:47,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:50:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:50:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:50:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:47,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:50:47,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:50:47,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:47,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:50:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:47,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:47,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:47,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:47,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:50:47,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:47,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:47,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:47,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:47,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:47,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:50:47,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122507278] [2020-10-28 14:50:47,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:50:47,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:50:47,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394418064] [2020-10-28 14:50:47,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:50:47,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:47,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:50:47,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:50:47,561 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-28 14:50:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:47,810 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-10-28 14:50:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:50:47,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-10-28 14:50:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:47,812 INFO L225 Difference]: With dead ends: 74 [2020-10-28 14:50:47,812 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:50:47,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:50:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:50:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-28 14:50:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 14:50:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-28 14:50:47,823 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 40 [2020-10-28 14:50:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:47,824 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-28 14:50:47,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:50:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-28 14:50:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:50:47,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:47,826 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-28 14:50:47,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:50:47,826 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1105924466, now seen corresponding path program 2 times [2020-10-28 14:50:47,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:47,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096811425] [2020-10-28 14:50:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:52,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:52,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:50:52,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 14:50:52,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 14:50:52,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:52,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:50:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:50:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:50:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:52,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:52,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:52,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:50:52,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:52,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:52,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:53,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:53,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:50:53,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:50:53,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:53,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:53,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:50:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:53,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:53,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:53,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:50:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:53,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:53,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:50:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:53,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:50:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:53,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:50:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:53,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:53,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:50:53,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:50:53,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 14:50:53,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:53,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:50:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:50:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:50:53,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:53,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:50:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:53,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:50:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:50:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:50:53,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096811425] [2020-10-28 14:50:53,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:50:53,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 14:50:53,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474828576] [2020-10-28 14:50:53,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:50:53,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:53,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:50:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:50:53,376 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 12 states. [2020-10-28 14:50:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:53,777 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-28 14:50:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:50:53,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-28 14:50:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:53,779 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:50:53,779 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:50:53,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:50:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:50:53,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-28 14:50:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 14:50:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-28 14:50:53,790 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 49 [2020-10-28 14:50:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:53,790 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-28 14:50:53,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:50:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-28 14:50:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:50:53,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:53,792 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-28 14:50:53,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:50:53,793 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:53,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1104315752, now seen corresponding path program 1 times [2020-10-28 14:50:53,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:53,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994505021] [2020-10-28 14:50:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:54,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:56,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:56,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:50:56,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:50:56,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2999 [2020-10-28 14:50:56,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:56,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:50:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 14:50:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:50:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:50:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:56,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:56,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:50:56,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:50:56,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:56,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:50:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:50:56,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:56,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:50:56,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:56,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:50:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:50:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:50:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:57,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:57,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:50:57,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:57,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:57,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:50:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:57,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:57,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:57,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:50:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:57,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:50:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:50:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:50:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:57,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:57,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:50:57,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:57,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:50:57,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:57,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:50:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:50:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:50:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:57,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:57,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:50:57,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:50:57,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:57,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:50:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:50:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:50:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:50:57,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994505021] [2020-10-28 14:50:57,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:50:57,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 14:50:57,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334731097] [2020-10-28 14:50:57,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:50:57,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:50:57,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:50:57,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:50:57,343 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 14 states. [2020-10-28 14:50:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:50:58,148 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-28 14:50:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:50:58,150 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-28 14:50:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:50:58,151 INFO L225 Difference]: With dead ends: 57 [2020-10-28 14:50:58,151 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 14:50:58,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:50:58,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 14:50:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-28 14:50:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 14:50:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-28 14:50:58,170 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 49 [2020-10-28 14:50:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:50:58,170 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-28 14:50:58,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:50:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-28 14:50:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:50:58,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:58,176 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-28 14:50:58,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:50:58,177 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash -386164023, now seen corresponding path program 1 times [2020-10-28 14:50:58,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:58,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402036833] [2020-10-28 14:50:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:03,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:51:03,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:51:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:51:03,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:03,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:03,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:51:03,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 14:51:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:03,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:03,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:03,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:03,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:03,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:03,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:03,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:03,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:03,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-28 14:51:03,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:03,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:03,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:03,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:03,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:04,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:04,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:04,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:51:04,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:04,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:51:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:04,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:04,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:51:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:04,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:51:04,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 14:51:04,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:04,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:51:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:51:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:05,109 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-28 14:51:06,260 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-28 14:51:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:06,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:06,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:06,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:51:06,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:06,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:51:06,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402036833] [2020-10-28 14:51:06,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:06,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 14:51:06,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829642617] [2020-10-28 14:51:06,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 14:51:06,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:06,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 14:51:06,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:51:06,541 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 25 states. [2020-10-28 14:51:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:08,645 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-10-28 14:51:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:51:08,647 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 51 [2020-10-28 14:51:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:08,649 INFO L225 Difference]: With dead ends: 62 [2020-10-28 14:51:08,652 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 14:51:08,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 14:51:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 14:51:08,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-10-28 14:51:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:51:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-10-28 14:51:08,677 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 51 [2020-10-28 14:51:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:08,677 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-10-28 14:51:08,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 14:51:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-10-28 14:51:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:51:08,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:08,680 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-28 14:51:08,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:51:08,681 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash -384555309, now seen corresponding path program 1 times [2020-10-28 14:51:08,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:08,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173791588] [2020-10-28 14:51:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:51:13,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:51:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4403 [2020-10-28 14:51:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 14:51:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:13,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:13,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:13,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:13,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:13,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:13,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:51:13,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:13,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:13,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:13,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:13,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:13,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:13,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:13,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:13,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:13,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:13,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:13,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:51:13,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 14:51:13,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:51:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:51:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:13,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:13,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:51:13,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:51:13,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173791588] [2020-10-28 14:51:13,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:13,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:51:13,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405017536] [2020-10-28 14:51:13,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:51:13,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:13,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:51:13,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:51:13,728 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 15 states. [2020-10-28 14:51:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:14,792 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-10-28 14:51:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:51:14,793 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-28 14:51:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:14,795 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:51:14,795 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:51:14,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:51:14,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:51:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-28 14:51:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 14:51:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-28 14:51:14,819 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 51 [2020-10-28 14:51:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:14,819 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-28 14:51:14,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:51:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-28 14:51:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:51:14,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:14,824 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-28 14:51:14,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:51:14,824 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1975082234, now seen corresponding path program 1 times [2020-10-28 14:51:14,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:14,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396861498] [2020-10-28 14:51:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:51:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:19,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:19,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:19,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:19,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:19,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:51:19,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:19,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:19,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:19,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:19,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:19,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:19,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:51:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:20,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:20,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:20,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:20,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:51:20,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:20,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:51:20,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396861498] [2020-10-28 14:51:20,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:20,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 14:51:20,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145767234] [2020-10-28 14:51:20,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:51:20,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:20,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:51:20,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:51:20,455 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 13 states. [2020-10-28 14:51:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:20,958 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-28 14:51:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:51:20,959 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-28 14:51:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:20,960 INFO L225 Difference]: With dead ends: 51 [2020-10-28 14:51:20,960 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:51:20,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:51:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:51:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 14:51:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:51:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-28 14:51:20,981 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 52 [2020-10-28 14:51:20,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:20,982 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-28 14:51:20,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:51:20,982 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-28 14:51:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:51:20,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:20,984 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-28 14:51:20,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:51:20,984 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:20,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1973473520, now seen corresponding path program 1 times [2020-10-28 14:51:20,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:20,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501531528] [2020-10-28 14:51:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:21,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4112 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 14:51:25,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:25,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:25,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:51:25,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:25,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:51:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:51:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:25,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 14:51:25,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:51:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:26,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:26,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:26,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:51:26,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:26,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:26,600 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-28 14:51:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:51:26,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501531528] [2020-10-28 14:51:26,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:26,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 14:51:26,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535592147] [2020-10-28 14:51:26,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 14:51:26,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:26,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 14:51:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:51:26,632 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 22 states. [2020-10-28 14:51:28,164 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-28 14:51:28,497 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-28 14:51:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:28,919 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-10-28 14:51:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:51:28,920 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2020-10-28 14:51:28,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:28,922 INFO L225 Difference]: With dead ends: 62 [2020-10-28 14:51:28,922 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 14:51:28,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 14:51:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 14:51:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-10-28 14:51:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:51:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-28 14:51:28,934 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 52 [2020-10-28 14:51:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:28,935 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-28 14:51:28,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 14:51:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-28 14:51:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:51:28,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:28,936 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:28,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:51:28,937 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1871843649, now seen corresponding path program 1 times [2020-10-28 14:51:28,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:28,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52920605] [2020-10-28 14:51:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:29,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:33,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:33,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:51:33,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 14:51:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 14:51:33,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:33,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:33,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:51:33,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:51:33,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:51:33,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:34,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:34,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:34,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:34,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:34,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:34,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:34,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:34,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 14:51:34,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:34,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:51:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:34,524 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-28 14:51:34,688 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-28 14:51:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:34,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:34,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:34,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:51:34,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52920605] [2020-10-28 14:51:34,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:34,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:51:34,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590950569] [2020-10-28 14:51:34,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:51:34,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:34,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:51:34,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:51:34,928 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 17 states. [2020-10-28 14:51:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:35,892 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2020-10-28 14:51:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:51:35,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-28 14:51:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:35,894 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:51:35,894 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:51:35,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:51:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:51:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-10-28 14:51:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:51:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-28 14:51:35,905 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 54 [2020-10-28 14:51:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:35,905 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-28 14:51:35,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:51:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-28 14:51:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:51:35,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:35,906 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-28 14:51:35,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:51:35,907 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:35,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1873452363, now seen corresponding path program 1 times [2020-10-28 14:51:35,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:35,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921811610] [2020-10-28 14:51:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:40,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:40,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:51:40,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 14:51:40,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:40,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 14:51:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:51:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:41,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:41,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:41,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:41,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:51:41,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:51:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:41,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:51:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:51:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:41,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:41,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:41,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:41,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:41,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:51:41,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:41,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:41,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:41,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:51:42,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921811610] [2020-10-28 14:51:42,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:42,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:51:42,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719169532] [2020-10-28 14:51:42,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:51:42,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:42,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:51:42,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:51:42,074 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 23 states. [2020-10-28 14:51:43,412 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-28 14:51:43,695 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-28 14:51:44,001 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-28 14:51:44,305 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-28 14:51:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:44,490 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-28 14:51:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:51:44,490 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 54 [2020-10-28 14:51:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:44,491 INFO L225 Difference]: With dead ends: 62 [2020-10-28 14:51:44,491 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 14:51:44,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 14:51:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 14:51:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 14:51:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 14:51:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-28 14:51:44,502 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 54 [2020-10-28 14:51:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:44,502 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-28 14:51:44,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:51:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-28 14:51:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:51:44,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:44,503 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-28 14:51:44,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:51:44,504 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:44,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:44,504 INFO L82 PathProgramCache]: Analyzing trace with hash -400267285, now seen corresponding path program 1 times [2020-10-28 14:51:44,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:44,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993655342] [2020-10-28 14:51:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:45,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:51:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-28 14:51:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:45,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 14:51:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 14:51:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:45,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:45,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:45,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:45,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:45,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:51:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:51:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:46,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:46,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:46,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:46,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:51:46,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:46,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:46,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:46,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:51:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:46,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:46,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:46,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:51:46,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 14:51:46,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:46,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:51:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:51:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,022 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-28 14:51:47,718 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-28 14:51:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:51:47,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:48,261 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-28 14:51:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:51:48,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993655342] [2020-10-28 14:51:48,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:48,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 14:51:48,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560073551] [2020-10-28 14:51:48,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 14:51:48,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:48,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 14:51:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:51:48,317 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 27 states. [2020-10-28 14:51:49,772 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 14:51:50,955 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-28 14:51:51,334 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-28 14:51:51,772 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-28 14:51:52,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:52,454 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-28 14:51:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:51:52,455 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 54 [2020-10-28 14:51:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:52,456 INFO L225 Difference]: With dead ends: 64 [2020-10-28 14:51:52,456 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:51:52,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=184, Invalid=1886, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 14:51:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:51:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-10-28 14:51:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 14:51:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-28 14:51:52,468 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 54 [2020-10-28 14:51:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:52,469 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-28 14:51:52,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 14:51:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-28 14:51:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:51:52,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:52,472 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:52,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:51:52,472 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:52,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1894547292, now seen corresponding path program 1 times [2020-10-28 14:51:52,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:52,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633175158] [2020-10-28 14:51:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:51:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:57,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:57,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:57,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:57,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:57,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:57,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:57,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:57,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:51:57,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:57,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:57,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:57,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:57,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:57,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:57,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:57,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:57,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:57,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:57,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:51:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:57,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:57,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:57,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:51:57,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 14:51:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:57,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:51:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:51:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:58,345 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-10-28 14:51:58,874 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-28 14:51:59,231 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-28 14:51:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:59,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 14:51:59,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633175158] [2020-10-28 14:51:59,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:59,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:51:59,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347305425] [2020-10-28 14:51:59,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:51:59,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:59,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:51:59,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:51:59,333 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 16 states. [2020-10-28 14:52:00,187 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 14:52:00,378 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-28 14:52:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:00,790 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-28 14:52:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:52:00,791 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-10-28 14:52:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:00,792 INFO L225 Difference]: With dead ends: 67 [2020-10-28 14:52:00,792 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 14:52:00,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:52:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 14:52:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-10-28 14:52:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 14:52:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-28 14:52:00,803 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 56 [2020-10-28 14:52:00,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:00,803 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-28 14:52:00,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:52:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-28 14:52:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:52:00,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:00,805 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, 1, 1, 1, 1] [2020-10-28 14:52:00,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:52:00,805 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:00,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1896156006, now seen corresponding path program 1 times [2020-10-28 14:52:00,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:00,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561757945] [2020-10-28 14:52:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:03,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:52:03,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2223 [2020-10-28 14:52:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:03,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 14:52:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 14:52:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:03,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:03,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:52:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:52:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:04,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:04,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:04,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:52:04,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:04,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 14:52:04,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:04,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:52:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:52:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:05,602 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-28 14:52:06,372 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-10-28 14:52:07,907 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 113 [2020-10-28 14:52:07,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 14:52:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:52:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:08,656 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-10-28 14:52:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:52:08,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561757945] [2020-10-28 14:52:08,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:08,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:52:08,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074115531] [2020-10-28 14:52:08,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:52:08,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:08,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:52:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:52:08,699 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 28 states. [2020-10-28 14:52:09,918 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-28 14:52:11,394 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-28 14:52:11,882 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-28 14:52:12,560 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 96 [2020-10-28 14:52:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:13,594 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-10-28 14:52:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:52:13,595 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-10-28 14:52:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:13,596 INFO L225 Difference]: With dead ends: 66 [2020-10-28 14:52:13,596 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 14:52:13,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 14:52:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 14:52:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-10-28 14:52:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:52:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-28 14:52:13,607 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 56 [2020-10-28 14:52:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:13,607 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-28 14:52:13,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:52:13,607 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-28 14:52:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:52:13,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:13,608 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, 1, 1, 1, 1] [2020-10-28 14:52:13,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:52:13,608 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:13,609 INFO L82 PathProgramCache]: Analyzing trace with hash -377563642, now seen corresponding path program 2 times [2020-10-28 14:52:13,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:13,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662880141] [2020-10-28 14:52:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:15,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:15,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:52:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:52:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-10-28 14:52:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:15,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 14:52:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 14:52:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:15,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:15,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:52:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:16,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:52:16,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:16,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:16,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:16,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:16,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:16,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:52:16,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:16,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:52:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:52:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:52:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:17,182 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-28 14:52:17,493 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-28 14:52:17,758 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 14:52:18,111 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-28 14:52:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:18,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:18,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:18,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:52:18,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:18,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:52:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:52:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:52:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:18,750 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-28 14:52:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:52:18,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662880141] [2020-10-28 14:52:18,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:18,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:52:18,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733885809] [2020-10-28 14:52:18,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:52:18,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:18,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:52:18,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:52:18,786 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 28 states. [2020-10-28 14:52:19,835 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-28 14:52:20,899 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-28 14:52:21,379 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-10-28 14:52:21,869 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2020-10-28 14:52:22,324 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2020-10-28 14:52:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:23,238 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2020-10-28 14:52:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 14:52:23,239 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-10-28 14:52:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:23,241 INFO L225 Difference]: With dead ends: 86 [2020-10-28 14:52:23,241 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 14:52:23,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=180, Invalid=1800, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 14:52:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 14:52:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2020-10-28 14:52:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 14:52:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-10-28 14:52:23,255 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 56 [2020-10-28 14:52:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:23,255 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-10-28 14:52:23,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 14:52:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-10-28 14:52:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:52:23,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:23,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:23,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:52:23,257 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:23,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1144139799, now seen corresponding path program 2 times [2020-10-28 14:52:23,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:23,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547894229] [2020-10-28 14:52:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:23,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:26,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:52:26,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:52:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3580 [2020-10-28 14:52:26,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:26,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:52:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:52:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:52:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:26,890 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 7: A-local: [(sll_append_~new_last~0.offset_39 Int), (sll_append_~last~0.base_42 Int), (|#memory_$Pointer$.offset_36| (Array Int (Array Int Int))), (sll_append_~last~0.offset_42 Int)], B-local: []. [2020-10-28 14:52:26,893 ERROR L253 erpolLogProxyWrapper]: Interpolant 8 not inductive [2020-10-28 14:52:26,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:52:26,896 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-28 14:52:26,901 INFO L168 Benchmark]: Toolchain (without parser) took 109761.66 ms. Allocated memory was 154.1 MB in the beginning and 738.2 MB in the end (delta: 584.1 MB). Free memory was 128.0 MB in the beginning and 374.3 MB in the end (delta: -246.3 MB). Peak memory consumption was 442.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:26,901 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 154.1 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:52:26,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.76 ms. Allocated memory is still 154.1 MB. Free memory was 127.2 MB in the beginning and 104.6 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:26,903 INFO L168 Benchmark]: Boogie Preprocessor took 153.62 ms. Allocated memory is still 154.1 MB. Free memory was 104.4 MB in the beginning and 135.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:26,903 INFO L168 Benchmark]: RCFGBuilder took 767.14 ms. Allocated memory is still 154.1 MB. Free memory was 135.8 MB in the beginning and 90.3 MB in the end (delta: 45.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:26,904 INFO L168 Benchmark]: TraceAbstraction took 108030.22 ms. Allocated memory was 154.1 MB in the beginning and 738.2 MB in the end (delta: 584.1 MB). Free memory was 89.8 MB in the beginning and 374.3 MB in the end (delta: -284.5 MB). Peak memory consumption was 403.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:26,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 154.1 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 779.76 ms. Allocated memory is still 154.1 MB. Free memory was 127.2 MB in the beginning and 104.6 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 153.62 ms. Allocated memory is still 154.1 MB. Free memory was 104.4 MB in the beginning and 135.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 767.14 ms. Allocated memory is still 154.1 MB. Free memory was 135.8 MB in the beginning and 90.3 MB in the end (delta: 45.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 108030.22 ms. Allocated memory was 154.1 MB in the beginning and 738.2 MB in the end (delta: 584.1 MB). Free memory was 89.8 MB in the beginning and 374.3 MB in the end (delta: -284.5 MB). Peak memory consumption was 403.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...