/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:28:49,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:28:49,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:28:49,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:28:49,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:28:49,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:28:49,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:28:49,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:28:49,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:28:49,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:28:49,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:28:49,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:28:49,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:28:49,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:28:49,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:28:49,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:28:49,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:28:49,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:28:49,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:28:49,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:28:49,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:28:49,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:28:49,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:28:49,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:28:49,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:28:49,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:28:49,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:28:49,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:28:49,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:28:49,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:28:49,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:28:49,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:28:49,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:28:49,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:28:49,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:28:49,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:28:49,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:28:49,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:28:49,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:28:49,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:28:49,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:28:49,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:28:49,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:28:49,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:28:49,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:28:49,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:28:49,862 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:28:49,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:28:49,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:28:49,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:28:49,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:28:49,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:28:49,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:28:49,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:28:49,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:28:49,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:28:49,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:28:49,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:28:49,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:28:49,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:28:49,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:28:49,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:28:49,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:28:49,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:28:49,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:28:49,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:28:49,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:28:49,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:28:49,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:28:49,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:28:49,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:28:49,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:28:50,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:28:50,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:28:50,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:28:50,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:28:50,387 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:28:50,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-29 09:28:50,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d9df62bd/a2dba5b940f94e1f809eee4a3ebfb9f1/FLAG0565e85c7 [2020-10-29 09:28:51,236 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:28:51,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-29 09:28:51,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d9df62bd/a2dba5b940f94e1f809eee4a3ebfb9f1/FLAG0565e85c7 [2020-10-29 09:28:51,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d9df62bd/a2dba5b940f94e1f809eee4a3ebfb9f1 [2020-10-29 09:28:51,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:28:51,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:28:51,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:28:51,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:28:51,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:28:51,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:28:51" (1/1) ... [2020-10-29 09:28:51,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5981b3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:51, skipping insertion in model container [2020-10-29 09:28:51,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:28:51" (1/1) ... [2020-10-29 09:28:51,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:28:51,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:28:52,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:28:52,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:28:52,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:28:52,171 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:28:52,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52 WrapperNode [2020-10-29 09:28:52,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:28:52,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:28:52,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:28:52,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:28:52,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... [2020-10-29 09:28:52,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... [2020-10-29 09:28:52,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... [2020-10-29 09:28:52,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... [2020-10-29 09:28:52,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... [2020-10-29 09:28:52,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... [2020-10-29 09:28:52,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... [2020-10-29 09:28:52,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:28:52,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:28:52,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:28:52,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:28:52,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:28:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:28:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:28:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:28:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:28:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:28:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:28:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:28:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-29 09:28:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-29 09:28:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2020-10-29 09:28:52,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:28:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:28:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:28:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:28:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:28:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:28:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:28:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:28:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:28:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:28:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:28:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:28:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:28:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:28:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:28:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:28:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:28:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:28:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:28:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:28:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:28:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:28:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:28:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:28:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:28:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:28:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:28:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:28:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:28:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:28:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:28:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:28:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:28:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:28:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:28:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:28:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:28:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:28:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:28:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:28:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:28:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:28:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:28:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:28:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:28:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:28:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:28:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:28:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:28:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:28:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:28:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:28:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:28:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:28:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:28:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:28:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:28:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:28:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:28:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:28:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:28:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:28:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:28:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:28:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:28:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:28:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:28:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:28:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:28:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:28:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:28:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:28:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:28:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:28:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:28:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:28:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:28:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:28:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:28:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:28:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:28:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:28:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:28:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:28:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:28:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:28:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:28:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:28:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:28:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:28:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:28:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:28:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:28:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:28:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:28:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:28:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:28:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:28:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:28:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:28:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:28:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:28:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:28:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:28:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:28:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:28:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:28:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:28:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:28:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-29 09:28:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-29 09:28:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:28:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:28:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2020-10-29 09:28:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:28:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:28:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:28:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:28:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:28:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:28:52,767 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:28:52,997 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:28:52,998 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 09:28:53,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:28:53 BoogieIcfgContainer [2020-10-29 09:28:53,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:28:53,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:28:53,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:28:53,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:28:53,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:28:51" (1/3) ... [2020-10-29 09:28:53,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538135e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:28:53, skipping insertion in model container [2020-10-29 09:28:53,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:52" (2/3) ... [2020-10-29 09:28:53,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538135e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:28:53, skipping insertion in model container [2020-10-29 09:28:53,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:28:53" (3/3) ... [2020-10-29 09:28:53,013 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2020-10-29 09:28:53,027 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:28:53,033 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:28:53,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:28:53,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:28:53,100 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:28:53,100 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:28:53,100 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:28:53,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:28:53,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:28:53,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:28:53,101 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:28:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-29 09:28:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:28:53,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:53,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:53,138 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1102594133, now seen corresponding path program 1 times [2020-10-29 09:28:53,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:53,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639357087] [2020-10-29 09:28:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:53,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:53,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:28:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:28:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4637 [2020-10-29 09:28:58,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:28:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:28:58,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:28:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:58,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:58,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:28:58,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:28:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 09:28:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:28:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:28:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:28:58,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:28:58,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:28:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:58,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:28:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:28:58,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 09:28:58,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:28:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:28:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:58,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 09:28:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:28:58,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639357087] [2020-10-29 09:28:58,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:58,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:28:58,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487989125] [2020-10-29 09:28:58,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:28:58,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:58,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:28:58,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:28:58,959 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 18 states. [2020-10-29 09:29:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:00,139 INFO L93 Difference]: Finished difference Result 121 states and 164 transitions. [2020-10-29 09:29:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:29:00,141 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-10-29 09:29:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:00,152 INFO L225 Difference]: With dead ends: 121 [2020-10-29 09:29:00,152 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:29:00,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:29:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:29:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-29 09:29:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 09:29:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-29 09:29:00,210 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 39 [2020-10-29 09:29:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:00,210 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-29 09:29:00,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:29:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-29 09:29:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:29:00,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:00,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:00,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:29:00,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:00,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:00,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1522822716, now seen corresponding path program 1 times [2020-10-29 09:29:00,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:00,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157590459] [2020-10-29 09:29:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:03,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:05,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:29:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:29:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:29:05,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:05,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:29:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:29:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:05,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:05,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:05,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:05,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:05,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:05,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 09:29:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:05,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:05,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:05,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:05,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:29:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:05,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:05,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:05,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:05,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:05,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 09:29:05,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:05,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:06,462 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-10-29 09:29:06,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:06,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:06,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 09:29:06,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:06,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:06,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157590459] [2020-10-29 09:29:06,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:06,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:29:06,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629262937] [2020-10-29 09:29:06,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:29:06,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:06,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:29:06,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:29:06,727 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 22 states. [2020-10-29 09:29:07,602 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-29 09:29:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:08,162 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-29 09:29:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:29:08,164 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2020-10-29 09:29:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:08,167 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:29:08,167 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 09:29:08,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:29:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 09:29:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2020-10-29 09:29:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 09:29:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-29 09:29:08,202 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 43 [2020-10-29 09:29:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:08,203 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-29 09:29:08,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:29:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-29 09:29:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:29:08,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:08,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:08,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:29:08,209 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:08,210 INFO L82 PathProgramCache]: Analyzing trace with hash 760087732, now seen corresponding path program 1 times [2020-10-29 09:29:08,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:08,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740990585] [2020-10-29 09:29:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:12,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 09:29:12,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3971 [2020-10-29 09:29:12,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:12,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:29:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:29:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:12,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:12,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:12,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:29:12,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:12,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:12,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:12,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:12,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:29:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 09:29:12,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:12,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:29:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:12,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:12,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:12,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:29:12,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:12,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:29:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:12,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:12,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:12,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:29:12,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:12,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:29:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:12,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:29:12,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:12,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 09:29:12,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:12,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:29:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:29:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:12,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:12,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:12,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 09:29:12,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:12,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:29:13,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740990585] [2020-10-29 09:29:13,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:13,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:29:13,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582448697] [2020-10-29 09:29:13,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:29:13,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:29:13,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:29:13,094 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 18 states. [2020-10-29 09:29:13,998 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 09:29:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:14,422 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2020-10-29 09:29:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:29:14,423 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-29 09:29:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:14,425 INFO L225 Difference]: With dead ends: 76 [2020-10-29 09:29:14,425 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:29:14,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:29:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:29:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-29 09:29:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:29:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-29 09:29:14,451 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 48 [2020-10-29 09:29:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:14,452 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-29 09:29:14,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:29:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-29 09:29:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:29:14,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:14,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:14,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:29:14,454 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:14,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1222815809, now seen corresponding path program 1 times [2020-10-29 09:29:14,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:14,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243921265] [2020-10-29 09:29:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:14,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:29:18,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:29:18,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3807 [2020-10-29 09:29:18,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:29:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:29:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:18,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:18,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:18,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 09:29:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:29:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:29:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:18,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:29:18,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:29:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:19,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:19,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:19,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 09:29:19,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:19,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:19,438 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-29 09:29:19,714 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-29 09:29:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:19,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:19,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 09:29:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:19,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:20,178 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-10-29 09:29:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:29:20,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243921265] [2020-10-29 09:29:20,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:20,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:29:20,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535870445] [2020-10-29 09:29:20,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:29:20,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:29:20,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:29:20,208 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 23 states. [2020-10-29 09:29:21,862 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-29 09:29:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:22,426 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-10-29 09:29:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:29:22,427 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2020-10-29 09:29:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:22,429 INFO L225 Difference]: With dead ends: 75 [2020-10-29 09:29:22,429 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 09:29:22,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:29:22,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 09:29:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-10-29 09:29:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:29:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-10-29 09:29:22,445 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 45 [2020-10-29 09:29:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:22,445 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-10-29 09:29:22,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:29:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-10-29 09:29:22,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:29:22,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:22,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:22,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:29:22,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1098383905, now seen corresponding path program 1 times [2020-10-29 09:29:22,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:22,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344782485] [2020-10-29 09:29:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:25,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:29:25,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:29:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3034 [2020-10-29 09:29:25,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:25,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:29:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:29:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:25,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:25,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:25,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:25,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:29:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:25,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:25,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:29:25,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 09:29:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:25,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:29:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:29:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:26,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:26,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:26,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:29:26,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:26,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:26,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:26,561 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-29 09:29:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:26,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344782485] [2020-10-29 09:29:26,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:26,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:29:26,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673968053] [2020-10-29 09:29:26,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:29:26,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:26,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:29:26,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:29:26,577 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 19 states. [2020-10-29 09:29:27,700 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 09:29:27,986 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-29 09:29:28,274 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-29 09:29:28,529 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-29 09:29:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:28,949 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-10-29 09:29:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:29:28,950 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-10-29 09:29:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:28,952 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:29:28,952 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 09:29:28,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:29:28,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 09:29:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 09:29:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:29:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-29 09:29:28,966 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 45 [2020-10-29 09:29:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:28,966 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-29 09:29:28,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:29:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-29 09:29:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:29:28,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:28,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:28,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:29:28,969 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:28,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1186636108, now seen corresponding path program 1 times [2020-10-29 09:29:28,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:28,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030927593] [2020-10-29 09:29:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:29,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:29:34,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:29:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 09:29:34,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:29:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 09:29:34,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:34,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:34,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:29:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:29:34,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:29:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:34,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:34,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:29:34,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:29:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:34,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 09:29:34,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,928 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-29 09:29:34,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:35,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:35,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:35,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 09:29:35,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:35,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:29:35,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030927593] [2020-10-29 09:29:35,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:35,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:29:35,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133616825] [2020-10-29 09:29:35,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:29:35,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:35,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:29:35,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:29:35,199 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 22 states. [2020-10-29 09:29:36,084 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-29 09:29:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:36,749 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-10-29 09:29:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:29:36,750 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-29 09:29:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:36,752 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:29:36,752 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 09:29:36,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:29:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 09:29:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-10-29 09:29:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 09:29:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-29 09:29:36,766 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 51 [2020-10-29 09:29:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:36,767 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-29 09:29:36,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:29:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-29 09:29:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:29:36,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:36,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:36,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:29:36,770 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:36,770 INFO L82 PathProgramCache]: Analyzing trace with hash 656737933, now seen corresponding path program 1 times [2020-10-29 09:29:36,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:36,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855305248] [2020-10-29 09:29:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:29:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:29:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:29:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:41,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:29:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 09:29:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:41,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:41,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:41,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:41,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:41,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:29:41,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:41,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:41,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:41,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:41,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:42,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:42,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:42,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 09:29:42,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:42,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:42,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:42,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:42,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:29:42,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:42,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:42,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:42,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:42,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:42,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 09:29:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:42,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:29:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:43,105 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 62 [2020-10-29 09:29:43,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:43,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:43,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:43,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:29:43,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:43,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:29:43,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855305248] [2020-10-29 09:29:43,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:43,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:29:43,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105772639] [2020-10-29 09:29:43,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:29:43,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:43,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:29:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:29:43,495 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 23 states. [2020-10-29 09:29:44,550 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-29 09:29:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:45,270 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2020-10-29 09:29:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:29:45,272 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 48 [2020-10-29 09:29:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:45,274 INFO L225 Difference]: With dead ends: 85 [2020-10-29 09:29:45,274 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 09:29:45,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:29:45,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 09:29:45,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2020-10-29 09:29:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:29:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2020-10-29 09:29:45,289 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 48 [2020-10-29 09:29:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:45,290 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2020-10-29 09:29:45,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:29:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2020-10-29 09:29:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:29:45,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:45,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:45,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:29:45,295 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:45,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:45,296 INFO L82 PathProgramCache]: Analyzing trace with hash 699696555, now seen corresponding path program 1 times [2020-10-29 09:29:45,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:45,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650332564] [2020-10-29 09:29:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:29:45,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-29 09:29:45,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:45,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:45,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:29:45,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:45,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:45,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:45,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 09:29:45,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:29:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:45,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:45,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:29:45,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:29:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:29:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:46,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:46,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:46,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:29:46,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:46,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:29:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:46,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:46,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:46,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:29:46,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:46,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:29:46,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650332564] [2020-10-29 09:29:46,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:29:46,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:29:46,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725496054] [2020-10-29 09:29:46,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:29:46,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:46,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:29:46,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:29:46,073 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand 7 states. [2020-10-29 09:29:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:46,307 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-10-29 09:29:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:29:46,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-29 09:29:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:46,308 INFO L225 Difference]: With dead ends: 100 [2020-10-29 09:29:46,309 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 09:29:46,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:29:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 09:29:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-29 09:29:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 09:29:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-29 09:29:46,328 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 48 [2020-10-29 09:29:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:46,328 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-29 09:29:46,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:29:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-29 09:29:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:29:46,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:46,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:46,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:29:46,336 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:46,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:46,336 INFO L82 PathProgramCache]: Analyzing trace with hash -183067321, now seen corresponding path program 1 times [2020-10-29 09:29:46,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:46,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553687240] [2020-10-29 09:29:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:50,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:50,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 09:29:50,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4445 [2020-10-29 09:29:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:50,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:29:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:29:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:50,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:50,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:50,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:50,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:50,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:50,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:51,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:29:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:51,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:51,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:29:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:51,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:51,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:29:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:51,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:29:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:51,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:51,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:51,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 09:29:51,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:51,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:29:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:51,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:29:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:51,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:52,279 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-29 09:29:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:29:52,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553687240] [2020-10-29 09:29:52,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:52,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:29:52,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864577645] [2020-10-29 09:29:52,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:29:52,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:52,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:29:52,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:29:52,305 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 23 states. [2020-10-29 09:29:53,678 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-29 09:29:53,956 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-29 09:29:54,320 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2020-10-29 09:29:54,637 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-29 09:29:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:54,940 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-29 09:29:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:29:54,941 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-10-29 09:29:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:54,942 INFO L225 Difference]: With dead ends: 78 [2020-10-29 09:29:54,942 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 09:29:54,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:29:54,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 09:29:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-29 09:29:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 09:29:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-29 09:29:54,966 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 53 [2020-10-29 09:29:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:54,967 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-29 09:29:54,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:29:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-29 09:29:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:29:54,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:54,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:54,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:29:54,972 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:54,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:54,972 INFO L82 PathProgramCache]: Analyzing trace with hash -58635417, now seen corresponding path program 1 times [2020-10-29 09:29:54,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:54,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28692091] [2020-10-29 09:29:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 09:30:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:30:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:30:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 09:30:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 09:30:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:00,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:30:00,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:00,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:00,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 09:30:00,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:30:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:30:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:00,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:30:00,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:00,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:30:00,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:01,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:01,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:30:01,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:01,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 09:30:01,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:01,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:30:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:30:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:02,800 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-29 09:30:03,241 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2020-10-29 09:30:10,459 WARN L193 SmtUtils]: Spent 6.13 s on a formula simplification. DAG size of input: 380 DAG size of output: 222 [2020-10-29 09:30:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:30:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:11,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:12,222 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-29 09:30:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:12,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28692091] [2020-10-29 09:30:12,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:12,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:30:12,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093713402] [2020-10-29 09:30:12,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:30:12,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:12,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:30:12,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:30:12,300 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 27 states. [2020-10-29 09:30:15,978 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification that was a NOOP. DAG size: 225 [2020-10-29 09:30:16,593 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-29 09:30:19,611 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 09:30:22,817 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 09:30:25,997 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-29 09:30:26,286 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-29 09:30:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:28,176 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2020-10-29 09:30:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:30:28,179 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 53 [2020-10-29 09:30:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:28,180 INFO L225 Difference]: With dead ends: 90 [2020-10-29 09:30:28,181 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 09:30:28,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 09:30:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 09:30:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2020-10-29 09:30:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:30:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-10-29 09:30:28,194 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 53 [2020-10-29 09:30:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:28,195 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-10-29 09:30:28,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:30:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-10-29 09:30:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:30:28,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:28,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:28,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:30:28,197 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:28,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:28,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1406872738, now seen corresponding path program 1 times [2020-10-29 09:30:28,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:28,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184510177] [2020-10-29 09:30:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:30:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:30:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 09:30:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:33,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:30:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 09:30:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:33,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:33,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:30:33,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:33,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:30:33,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:34,062 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 09:30:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:30:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:34,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:34,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:34,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:34,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:30:34,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:34,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:30:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:30:34,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:34,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:34,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:30:34,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 09:30:34,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:34,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:30:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:30:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:35,077 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-29 09:30:35,432 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-29 09:30:35,766 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-29 09:30:36,247 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2020-10-29 09:30:36,740 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-10-29 09:30:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:36,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:36,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:36,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:36,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:30:36,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:36,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:37,387 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-10-29 09:30:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:30:37,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184510177] [2020-10-29 09:30:37,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:37,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:30:37,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676809715] [2020-10-29 09:30:37,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:30:37,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:37,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:30:37,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:30:37,421 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 28 states. [2020-10-29 09:30:37,924 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-29 09:30:38,730 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 09:30:39,075 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 09:30:40,517 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-10-29 09:30:41,039 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-29 09:30:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:42,043 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions. [2020-10-29 09:30:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:30:42,044 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2020-10-29 09:30:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:42,046 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:30:42,046 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 09:30:42,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=159, Invalid=1733, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:30:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 09:30:42,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-10-29 09:30:42,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 09:30:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-29 09:30:42,061 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 55 [2020-10-29 09:30:42,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:42,062 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-29 09:30:42,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:30:42,062 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-29 09:30:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:30:42,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:42,063 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:42,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:30:42,063 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:42,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1531304642, now seen corresponding path program 2 times [2020-10-29 09:30:42,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:42,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635743067] [2020-10-29 09:30:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:42,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:47,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:30:47,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:30:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 09:30:47,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:47,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:30:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:30:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:47,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:47,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:47,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:30:47,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:47,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:47,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:47,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:47,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 09:30:47,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:47,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:30:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:30:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:47,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:47,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:47,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:47,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:47,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:47,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:30:47,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:47,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:47,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:48,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:48,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:30:48,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 09:30:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:48,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:30:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:30:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:48,383 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-29 09:30:48,637 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-29 09:30:48,857 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-29 09:30:49,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:49,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:49,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:49,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:49,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:30:49,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:49,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:30:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:49,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635743067] [2020-10-29 09:30:49,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:49,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:30:49,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443020057] [2020-10-29 09:30:49,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:30:49,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:30:49,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:30:49,368 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 24 states. [2020-10-29 09:30:51,120 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-29 09:30:51,428 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-29 09:30:51,770 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-29 09:30:52,283 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2020-10-29 09:30:52,684 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-29 09:30:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:53,190 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2020-10-29 09:30:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:30:53,191 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-10-29 09:30:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:53,193 INFO L225 Difference]: With dead ends: 89 [2020-10-29 09:30:53,193 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 09:30:53,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:30:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 09:30:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-29 09:30:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 09:30:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-29 09:30:53,207 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 55 [2020-10-29 09:30:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:53,208 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-29 09:30:53,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:30:53,208 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2020-10-29 09:30:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:30:53,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:53,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:53,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:30:53,209 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:53,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2083659057, now seen corresponding path program 2 times [2020-10-29 09:30:53,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:53,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241227389] [2020-10-29 09:30:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:58,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 09:30:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:30:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 09:30:58,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:58,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 09:30:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 09:30:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:58,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:30:58,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:58,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:58,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:58,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:30:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:58,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:58,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:58,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:58,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:30:58,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:58,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:30:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:58,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:58,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:30:58,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:58,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:30:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:58,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:30:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:58,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:58,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:58,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:30:58,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:58,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:30:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:30:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:30:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:59,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:59,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:30:59,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:59,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 09:30:59,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:59,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:30:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:30:59,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:59,663 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-29 09:30:59,984 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-29 09:31:00,423 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-10-29 09:31:00,787 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-29 09:31:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:00,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:00,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:00,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:00,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:31:00,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:00,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:01,285 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-10-29 09:31:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:31:01,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241227389] [2020-10-29 09:31:01,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:01,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:31:01,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790646147] [2020-10-29 09:31:01,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:31:01,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:01,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:31:01,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:31:01,314 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 27 states. [2020-10-29 09:31:01,851 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-29 09:31:02,735 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 09:31:03,125 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 09:31:04,396 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-29 09:31:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:05,373 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2020-10-29 09:31:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:31:05,374 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-10-29 09:31:05,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:05,376 INFO L225 Difference]: With dead ends: 89 [2020-10-29 09:31:05,376 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 09:31:05,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:31:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 09:31:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2020-10-29 09:31:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 09:31:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2020-10-29 09:31:05,391 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 61 [2020-10-29 09:31:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:05,391 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2020-10-29 09:31:05,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:31:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2020-10-29 09:31:05,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:31:05,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:05,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:05,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:31:05,393 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:05,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1959227153, now seen corresponding path program 3 times [2020-10-29 09:31:05,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:05,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898027140] [2020-10-29 09:31:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:05,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:09,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:10,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:10,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 09:31:10,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:31:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 09:31:10,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:10,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:10,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 09:31:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 09:31:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:10,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:10,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:10,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:31:10,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:10,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:10,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:31:10,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 09:31:10,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:10,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:31:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:31:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:11,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:11,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:11,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:11,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:31:11,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:11,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:11,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:11,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:11,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:11,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:31:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:11,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:31:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:11,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:11,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:11,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:31:11,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:11,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:31:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:31:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:11,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:11,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:11,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 09:31:11,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:11,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:31:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:31:11,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:12,119 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-29 09:31:12,372 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-29 09:31:12,918 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2020-10-29 09:31:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:13,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:13,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:13,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:31:13,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:13,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:31:13,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898027140] [2020-10-29 09:31:13,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:13,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:31:13,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008132384] [2020-10-29 09:31:13,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:31:13,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:13,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:31:13,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:31:13,354 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand 27 states. [2020-10-29 09:31:14,689 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-29 09:31:15,350 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-29 09:31:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:16,323 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2020-10-29 09:31:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:31:16,325 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-10-29 09:31:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:16,326 INFO L225 Difference]: With dead ends: 101 [2020-10-29 09:31:16,327 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 09:31:16,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 09:31:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 09:31:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 74. [2020-10-29 09:31:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 09:31:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-29 09:31:16,341 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 61 [2020-10-29 09:31:16,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:16,341 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-29 09:31:16,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:31:16,341 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2020-10-29 09:31:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:31:16,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:16,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:16,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:31:16,343 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1504762570, now seen corresponding path program 1 times [2020-10-29 09:31:16,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:16,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508930438] [2020-10-29 09:31:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:21,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:31:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:31:21,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 09:31:21,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:21,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:31:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:31:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:21,699 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2020-10-29 09:31:21,884 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-10-29 09:31:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:31:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:22,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:31:22,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:22,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:31:22,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:31:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:22,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 09:31:22,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:31:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:31:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:22,968 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-29 09:31:23,685 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 66 [2020-10-29 09:31:24,746 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 80 [2020-10-29 09:31:27,476 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 238 DAG size of output: 116 [2020-10-29 09:31:30,178 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 242 DAG size of output: 115 [2020-10-29 09:31:32,532 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 228 DAG size of output: 102 [2020-10-29 09:31:32,763 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2020-10-29 09:31:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:32,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:32,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:32,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:32,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:32,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:31:32,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:32,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:31:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:31:33,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508930438] [2020-10-29 09:31:33,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:33,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:31:33,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108996464] [2020-10-29 09:31:33,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:31:33,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:33,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:31:33,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:31:33,033 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 23 states. [2020-10-29 09:31:34,029 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-29 09:31:34,288 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-29 09:31:34,666 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-29 09:31:35,532 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 111 [2020-10-29 09:31:37,009 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 131 DAG size of output: 126 [2020-10-29 09:31:37,704 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 98 [2020-10-29 09:31:38,608 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-10-29 09:31:39,003 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 09:31:39,250 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 09:31:39,496 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-29 09:31:39,815 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-29 09:31:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:40,357 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2020-10-29 09:31:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:31:40,358 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 58 [2020-10-29 09:31:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:40,360 INFO L225 Difference]: With dead ends: 105 [2020-10-29 09:31:40,360 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 09:31:40,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:31:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 09:31:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2020-10-29 09:31:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 09:31:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-29 09:31:40,374 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 58 [2020-10-29 09:31:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:40,374 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-29 09:31:40,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:31:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-29 09:31:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:31:40,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:40,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:40,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:31:40,376 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1547721192, now seen corresponding path program 1 times [2020-10-29 09:31:40,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:40,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202990598] [2020-10-29 09:31:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:45,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:31:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:31:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:31:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:45,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:31:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:31:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:45,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:45,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:45,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:45,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:45,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:31:45,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:45,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:45,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:45,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:31:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 09:31:45,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:45,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:31:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:31:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:46,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:46,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:46,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:31:46,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:46,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:46,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:46,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:46,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:31:46,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:46,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:46,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:46,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:46,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:31:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:31:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:46,952 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 09:31:47,211 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-29 09:31:47,586 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-29 09:31:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:31:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:47,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:31:48,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202990598] [2020-10-29 09:31:48,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:48,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:31:48,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692704075] [2020-10-29 09:31:48,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:31:48,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:48,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:31:48,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:31:48,101 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 28 states. [2020-10-29 09:31:48,764 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-29 09:31:49,921 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-29 09:31:50,350 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-29 09:31:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:51,215 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2020-10-29 09:31:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:31:51,216 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 58 [2020-10-29 09:31:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:51,218 INFO L225 Difference]: With dead ends: 111 [2020-10-29 09:31:51,219 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 09:31:51,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=119, Invalid=1441, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:31:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 09:31:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2020-10-29 09:31:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 09:31:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2020-10-29 09:31:51,236 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 58 [2020-10-29 09:31:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:51,236 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2020-10-29 09:31:51,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:31:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2020-10-29 09:31:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:31:51,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:51,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:51,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:31:51,238 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:51,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:51,238 INFO L82 PathProgramCache]: Analyzing trace with hash 299315242, now seen corresponding path program 2 times [2020-10-29 09:31:51,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:51,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507700351] [2020-10-29 09:31:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:56,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 09:31:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:31:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5635 [2020-10-29 09:31:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:56,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:31:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 09:31:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:56,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:57,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:31:57,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 09:31:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:57,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:31:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:31:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:57,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:57,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:57,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:31:57,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:57,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:57,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:57,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:57,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:31:57,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:57,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:31:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:57,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:57,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:31:57,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:57,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:31:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:31:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:58,582 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-29 09:31:58,758 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-29 09:31:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:58,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:58,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:58,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:58,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:31:58,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:58,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:59,272 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-29 09:31:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:31:59,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507700351] [2020-10-29 09:31:59,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:59,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:31:59,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662012093] [2020-10-29 09:31:59,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:31:59,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:31:59,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:31:59,299 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand 28 states. [2020-10-29 09:32:00,133 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-29 09:32:01,034 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 09:32:01,396 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 09:32:01,827 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-29 09:32:02,271 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2020-10-29 09:32:02,682 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-10-29 09:32:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:03,217 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2020-10-29 09:32:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:32:03,218 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2020-10-29 09:32:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:03,219 INFO L225 Difference]: With dead ends: 116 [2020-10-29 09:32:03,219 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 09:32:03,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=148, Invalid=1574, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:32:03,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 09:32:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-29 09:32:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 09:32:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2020-10-29 09:32:03,238 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 63 [2020-10-29 09:32:03,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:03,239 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2020-10-29 09:32:03,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:32:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2020-10-29 09:32:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:32:03,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:03,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:32:03,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:32:03,240 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash 423747146, now seen corresponding path program 4 times [2020-10-29 09:32:03,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:03,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539498040] [2020-10-29 09:32:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:03,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:03,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 09:32:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:32:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:32:08,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:32:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 09:32:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,450 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-29 09:32:08,579 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-29 09:32:08,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:08,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:32:09,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:09,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:32:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:32:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:10,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:10,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:32:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 09:32:10,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:10,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:32:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:32:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:10,431 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-10-29 09:32:10,851 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-29 09:32:11,386 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-29 09:32:11,806 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-29 09:32:12,492 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 99 [2020-10-29 09:32:12,930 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-29 09:32:12,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:12,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:12,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:12,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:32:12,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:12,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:13,354 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-29 09:32:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:32:13,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539498040] [2020-10-29 09:32:13,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:13,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 09:32:13,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425115937] [2020-10-29 09:32:13,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 09:32:13,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:13,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 09:32:13,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:32:13,396 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand 32 states. [2020-10-29 09:32:14,057 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-29 09:32:15,169 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-29 09:32:15,851 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-10-29 09:32:16,176 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-10-29 09:32:16,829 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 95 [2020-10-29 09:32:17,031 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-29 09:32:18,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:18,188 INFO L93 Difference]: Finished difference Result 131 states and 166 transitions. [2020-10-29 09:32:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:32:18,189 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 63 [2020-10-29 09:32:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:18,191 INFO L225 Difference]: With dead ends: 131 [2020-10-29 09:32:18,191 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 09:32:18,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=140, Invalid=1840, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:32:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 09:32:18,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2020-10-29 09:32:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 09:32:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 140 transitions. [2020-10-29 09:32:18,211 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 140 transitions. Word has length 63 [2020-10-29 09:32:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:18,211 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 140 transitions. [2020-10-29 09:32:18,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 09:32:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 140 transitions. [2020-10-29 09:32:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:32:18,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:18,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:32:18,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:32:18,213 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:18,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:18,214 INFO L82 PathProgramCache]: Analyzing trace with hash 525261181, now seen corresponding path program 1 times [2020-10-29 09:32:18,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:18,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855996549] [2020-10-29 09:32:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:23,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:32:23,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:32:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 09:32:23,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:23,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:32:23,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:23,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 09:32:23,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:23,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:23,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:23,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:23,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:23,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:23,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:23,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:23,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:23,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:23,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:23,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:23,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:23,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:32:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:23,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:32:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:23,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:23,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 09:32:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:23,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:32:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:32:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:24,389 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-29 09:32:24,883 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-10-29 09:32:25,179 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-29 09:32:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:25,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:25,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:25,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:32:25,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:25,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:32:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 09:32:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855996549] [2020-10-29 09:32:25,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:25,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:32:25,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058275284] [2020-10-29 09:32:25,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:32:25,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:25,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:32:25,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:32:25,512 INFO L87 Difference]: Start difference. First operand 112 states and 140 transitions. Second operand 24 states. [2020-10-29 09:32:26,903 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-29 09:32:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:28,157 INFO L93 Difference]: Finished difference Result 135 states and 169 transitions. [2020-10-29 09:32:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:32:28,163 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 64 [2020-10-29 09:32:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:28,164 INFO L225 Difference]: With dead ends: 135 [2020-10-29 09:32:28,164 INFO L226 Difference]: Without dead ends: 131 [2020-10-29 09:32:28,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:32:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-29 09:32:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2020-10-29 09:32:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 09:32:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 152 transitions. [2020-10-29 09:32:28,190 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 152 transitions. Word has length 64 [2020-10-29 09:32:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:28,190 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 152 transitions. [2020-10-29 09:32:28,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:32:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 152 transitions. [2020-10-29 09:32:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:32:28,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:28,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:32:28,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:32:28,194 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:28,194 INFO L82 PathProgramCache]: Analyzing trace with hash 568219803, now seen corresponding path program 1 times [2020-10-29 09:32:28,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:28,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055316555] [2020-10-29 09:32:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:30,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:33,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:33,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:32:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:33,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:33,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:33,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:32:33,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:33,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 09:32:33,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:33,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:32:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:32:33,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:33,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:33,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:33,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:32:33,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:33,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:33,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:32:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:33,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:33,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:32:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:33,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:32:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:34,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:34,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:32:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:34,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:34,899 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-10-29 09:32:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:32:34,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055316555] [2020-10-29 09:32:34,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:34,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:32:34,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88816422] [2020-10-29 09:32:34,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:32:34,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:34,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:32:34,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:32:34,918 INFO L87 Difference]: Start difference. First operand 121 states and 152 transitions. Second operand 27 states. [2020-10-29 09:32:35,564 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-29 09:32:36,556 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-29 09:32:36,944 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-29 09:32:37,253 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-29 09:32:37,539 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-29 09:32:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:37,835 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2020-10-29 09:32:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:32:37,841 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2020-10-29 09:32:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:37,843 INFO L225 Difference]: With dead ends: 131 [2020-10-29 09:32:37,844 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 09:32:37,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:32:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 09:32:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-29 09:32:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 09:32:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2020-10-29 09:32:37,861 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 64 [2020-10-29 09:32:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:37,861 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2020-10-29 09:32:37,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:32:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2020-10-29 09:32:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:32:37,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:37,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:32:37,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:32:37,863 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:37,864 INFO L82 PathProgramCache]: Analyzing trace with hash 194577805, now seen corresponding path program 2 times [2020-10-29 09:32:37,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:37,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985686569] [2020-10-29 09:32:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:38,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking...