/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=SHALLOWEST --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_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:24:10,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:24:10,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:24:10,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:24:10,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:24:10,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:24:10,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:24:10,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:24:10,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:24:10,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:24:10,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:24:10,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:24:10,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:24:10,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:24:10,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:24:10,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:24:10,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:24:10,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:24:10,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:24:10,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:24:10,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:24:10,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:24:10,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:24:10,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:24:10,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:24:10,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:24:10,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:24:10,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:24:10,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:24:10,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:24:10,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:24:10,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:24:10,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:24:10,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:24:10,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:24:10,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:24:10,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:24:10,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:24:10,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:24:10,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:24:10,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:24:10,321 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 [2020-10-27 01:24:10,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:24:10,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:24:10,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:24:10,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:24:10,368 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:24:10,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:24:10,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:24:10,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:24:10,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:24:10,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:24:10,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:24:10,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:24:10,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:24:10,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:24:10,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:24:10,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:24:10,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:24:10,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:24:10,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:24:10,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:24:10,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:24:10,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:24:10,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:24:10,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:24:10,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:24:10,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:24:10,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:24:10,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:24:10,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:24:10,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:24:10,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:24:10,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:24:10,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:24:10,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:24:10,810 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:24:10,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_insert_equal.i [2020-10-27 01:24:10,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b46f77b/c0a34772a73243cfb2613c47de90f1e2/FLAG9431b6558 [2020-10-27 01:24:11,696 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:24:11,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_insert_equal.i [2020-10-27 01:24:11,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b46f77b/c0a34772a73243cfb2613c47de90f1e2/FLAG9431b6558 [2020-10-27 01:24:11,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b46f77b/c0a34772a73243cfb2613c47de90f1e2 [2020-10-27 01:24:11,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:24:12,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:24:12,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:24:12,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:24:12,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:24:12,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:24:11" (1/1) ... [2020-10-27 01:24:12,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b8fc69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12, skipping insertion in model container [2020-10-27 01:24:12,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:24:11" (1/1) ... [2020-10-27 01:24:12,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:24:12,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:24:12,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:24:12,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:24:12,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:24:12,670 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:24:12,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12 WrapperNode [2020-10-27 01:24:12,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:24:12,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:24:12,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:24:12,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:24:12,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (1/1) ... [2020-10-27 01:24:12,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (1/1) ... [2020-10-27 01:24:12,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (1/1) ... [2020-10-27 01:24:12,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (1/1) ... [2020-10-27 01:24:12,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (1/1) ... [2020-10-27 01:24:12,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (1/1) ... [2020-10-27 01:24:12,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (1/1) ... [2020-10-27 01:24:12,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:24:12,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:24:12,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:24:12,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:24:12,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (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 [2020-10-27 01:24:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:24:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:24:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:24:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:24:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:24:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:24:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 01:24:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-27 01:24:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-27 01:24:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_insert [2020-10-27 01:24:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:24:12,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:24:12,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:24:12,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:24:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:24:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:24:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:24:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:24:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:24:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:24:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:24:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:24:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:24:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:24:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:24:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:24:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:24:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:24:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:24:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:24:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:24:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:24:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:24:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:24:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:24:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:24:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:24:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:24:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:24:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:24:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:24:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:24:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:24:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:24:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:24:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:24:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:24:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:24:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:24:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:24:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:24:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:24:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:24:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:24:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:24:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:24:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:24:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:24:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:24:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:24:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:24:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:24:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:24:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:24:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:24:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:24:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:24:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:24:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:24:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:24:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:24:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:24:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:24:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:24:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:24:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:24:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:24:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:24:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:24:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 01:24:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:24:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:24:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:24:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-27 01:24:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-27 01:24:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:24:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:24:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_insert [2020-10-27 01:24:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:24:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:24:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:24:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:24:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:24:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:24:13,327 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:24:13,580 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:24:13,580 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 01:24:13,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:24:13 BoogieIcfgContainer [2020-10-27 01:24:13,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:24:13,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:24:13,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:24:13,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:24:13,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:24:11" (1/3) ... [2020-10-27 01:24:13,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c224cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:24:13, skipping insertion in model container [2020-10-27 01:24:13,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:12" (2/3) ... [2020-10-27 01:24:13,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c224cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:24:13, skipping insertion in model container [2020-10-27 01:24:13,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:24:13" (3/3) ... [2020-10-27 01:24:13,593 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_insert_equal.i [2020-10-27 01:24:13,606 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:24:13,612 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:24:13,627 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:24:13,657 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:24:13,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:24:13,658 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:24:13,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:24:13,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:24:13,658 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:24:13,658 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:24:13,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:24:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-27 01:24:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:24:13,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:13,687 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] [2020-10-27 01:24:13,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:13,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash -178593574, now seen corresponding path program 1 times [2020-10-27 01:24:13,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:13,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352694421] [2020-10-27 01:24:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:14,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 01:24:15,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1134 [2020-10-27 01:24:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 01:24:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:24:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:15,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:24:15,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:24:15,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 01:24:15,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:24:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:15,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:24:15,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:24:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:24:15,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 01:24:15,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:24:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:24:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:15,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:15,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:24:15,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:24:15,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352694421] [2020-10-27 01:24:15,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:24:15,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:24:15,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329610461] [2020-10-27 01:24:15,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:24:15,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:15,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:24:15,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:24:15,517 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 7 states. [2020-10-27 01:24:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:15,886 INFO L93 Difference]: Finished difference Result 114 states and 151 transitions. [2020-10-27 01:24:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:24:15,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-27 01:24:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:15,899 INFO L225 Difference]: With dead ends: 114 [2020-10-27 01:24:15,899 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 01:24:15,903 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 [2020-10-27 01:24:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 01:24:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-27 01:24:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 01:24:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-27 01:24:15,953 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 39 [2020-10-27 01:24:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:15,955 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-27 01:24:15,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:24:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-27 01:24:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:24:15,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:15,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:15,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:24:15,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1271545415, now seen corresponding path program 1 times [2020-10-27 01:24:15,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:15,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935650722] [2020-10-27 01:24:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 01:24:18,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:18,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-27 01:24:18,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:24:18,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:18,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:24:18,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:24:18,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:24:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:24:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:24:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:24:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:24:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:18,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:24:18,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:18,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:24:18,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:18,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:18,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:24:18,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:24:18,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935650722] [2020-10-27 01:24:18,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:24:18,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:24:18,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547841672] [2020-10-27 01:24:18,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:24:18,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:18,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:24:18,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:24:18,867 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2020-10-27 01:24:19,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:19,075 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-10-27 01:24:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:24:19,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-27 01:24:19,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:19,077 INFO L225 Difference]: With dead ends: 76 [2020-10-27 01:24:19,077 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 01:24:19,079 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 [2020-10-27 01:24:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 01:24:19,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-27 01:24:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 01:24:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-27 01:24:19,090 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 40 [2020-10-27 01:24:19,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:19,090 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-27 01:24:19,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:24:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-27 01:24:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 01:24:19,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:19,092 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] [2020-10-27 01:24:19,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:24:19,093 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1333285391, now seen corresponding path program 1 times [2020-10-27 01:24:19,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:19,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158970359] [2020-10-27 01:24:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 01:24:21,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-10-27 01:24:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 01:24:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 01:24:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:21,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:24:21,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 01:24:21,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:24:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:24:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:21,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:24:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:24:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:22,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:22,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:22,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:22,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-27 01:24:22,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:24:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:24:22,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:22,589 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-27 01:24:22,813 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-27 01:24:22,999 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-27 01:24:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:23,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:23,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:23,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 01:24:23,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:24:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:23,604 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-27 01:24:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:23,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158970359] [2020-10-27 01:24:23,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:23,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 01:24:23,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100930626] [2020-10-27 01:24:23,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:24:23,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:23,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:24:23,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:24:23,637 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 27 states. [2020-10-27 01:24:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:25,529 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-10-27 01:24:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:24:25,530 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 48 [2020-10-27 01:24:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:25,533 INFO L225 Difference]: With dead ends: 64 [2020-10-27 01:24:25,533 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 01:24:25,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 01:24:25,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 01:24:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2020-10-27 01:24:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 01:24:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-27 01:24:25,547 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 48 [2020-10-27 01:24:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:25,548 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-27 01:24:25,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:24:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-27 01:24:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:24:25,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:25,550 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] [2020-10-27 01:24:25,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:24:25,550 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2009359752, now seen corresponding path program 2 times [2020-10-27 01:24:25,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:25,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456990395] [2020-10-27 01:24:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:25,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:24:26,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-27 01:24:26,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 01:24:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:26,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:24:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:26,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:26,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:26,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 01:24:26,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:26,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:26,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:26,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:24:26,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:26,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:24:26,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:24:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 01:24:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:24:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:24:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:26,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:26,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:26,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:24:26,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:26,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:26,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:26,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 01:24:26,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456990395] [2020-10-27 01:24:26,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:26,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:24:26,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476322345] [2020-10-27 01:24:26,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:24:26,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:26,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:24:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:24:26,830 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 8 states. [2020-10-27 01:24:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:27,106 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 01:24:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:24:27,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-27 01:24:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:27,108 INFO L225 Difference]: With dead ends: 65 [2020-10-27 01:24:27,108 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 01:24:27,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:24:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 01:24:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-27 01:24:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 01:24:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-27 01:24:27,120 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 49 [2020-10-27 01:24:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:27,121 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-27 01:24:27,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:24:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-27 01:24:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 01:24:27,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:27,123 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] [2020-10-27 01:24:27,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:24:27,123 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:27,124 INFO L82 PathProgramCache]: Analyzing trace with hash -838626889, now seen corresponding path program 1 times [2020-10-27 01:24:27,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:27,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68248989] [2020-10-27 01:24:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:31,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:24:31,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:24:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4643 [2020-10-27 01:24:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:24:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:24:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:24:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 01:24:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:24:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:32,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:32,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:24:32,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:32,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:24:32,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 01:24:32,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:24:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 01:24:32,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:32,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:32,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:32,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:32,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 01:24:32,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:32,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:32,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68248989] [2020-10-27 01:24:32,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:32,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:24:32,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211440446] [2020-10-27 01:24:32,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:24:32,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:32,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:24:32,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:24:32,830 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 19 states. [2020-10-27 01:24:33,834 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-27 01:24:34,031 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-27 01:24:34,229 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-27 01:24:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:34,487 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-27 01:24:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:24:34,488 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-27 01:24:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:34,489 INFO L225 Difference]: With dead ends: 60 [2020-10-27 01:24:34,489 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 01:24:34,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2020-10-27 01:24:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 01:24:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-27 01:24:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 01:24:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-27 01:24:34,500 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 50 [2020-10-27 01:24:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:34,500 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-27 01:24:34,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:24:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-27 01:24:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 01:24:34,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:34,501 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] [2020-10-27 01:24:34,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:24:34,502 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:34,502 INFO L82 PathProgramCache]: Analyzing trace with hash -323045561, now seen corresponding path program 1 times [2020-10-27 01:24:34,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:34,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993161879] [2020-10-27 01:24:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:39,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:39,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 01:24:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4521 [2020-10-27 01:24:39,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 01:24:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 01:24:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:39,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:39,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:39,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:39,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:24:39,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:39,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:39,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:39,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 01:24:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:24:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:39,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:39,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:39,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:24:39,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:39,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:39,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:39,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 01:24:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:24:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:39,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:40,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:40,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:40,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 01:24:40,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:24:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:24:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:41,282 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-27 01:24:45,130 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 239 DAG size of output: 149 [2020-10-27 01:24:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:24:45,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:24:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,490 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-27 01:24:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:45,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993161879] [2020-10-27 01:24:45,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:45,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 01:24:45,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007080988] [2020-10-27 01:24:45,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:24:45,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:45,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:24:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:24:45,517 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 27 states. [2020-10-27 01:24:47,185 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:24:49,068 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:24:50,801 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 01:24:52,763 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-27 01:24:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:54,296 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-10-27 01:24:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:24:54,297 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-10-27 01:24:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:54,300 INFO L225 Difference]: With dead ends: 72 [2020-10-27 01:24:54,300 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 01:24:54,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:24:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 01:24:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2020-10-27 01:24:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 01:24:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-27 01:24:54,314 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 51 [2020-10-27 01:24:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:54,315 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-27 01:24:54,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:24:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-27 01:24:54,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:24:54,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:54,316 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] [2020-10-27 01:24:54,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:24:54,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1386030137, now seen corresponding path program 1 times [2020-10-27 01:24:54,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:54,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883675884] [2020-10-27 01:24:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:24:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-27 01:24:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 01:24:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 01:24:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:55,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:55,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:55,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:24:55,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:55,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:55,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:55,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 01:24:55,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:24:56,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-27 01:24:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:56,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:56,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:56,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:24:56,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:56,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:56,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:56,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:56,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-27 01:24:56,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:24:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:24:56,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:57,193 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-27 01:24:57,484 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-27 01:24:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:57,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:57,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:57,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:57,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:57,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 01:24:57,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:57,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:57,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:57,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:57,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883675884] [2020-10-27 01:24:57,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:57,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:24:57,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718451630] [2020-10-27 01:24:57,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:24:57,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:57,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:24:57,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:24:57,820 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 23 states. [2020-10-27 01:24:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:59,491 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-27 01:24:59,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:24:59,492 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 52 [2020-10-27 01:24:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:59,494 INFO L225 Difference]: With dead ends: 67 [2020-10-27 01:24:59,494 INFO L226 Difference]: Without dead ends: 63 [2020-10-27 01:24:59,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:24:59,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-27 01:24:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-27 01:24:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 01:24:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-27 01:24:59,514 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 52 [2020-10-27 01:24:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:59,516 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-27 01:24:59,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:24:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-27 01:24:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 01:24:59,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:59,520 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-27 01:24:59,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:24:59,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:59,521 INFO L82 PathProgramCache]: Analyzing trace with hash 924678159, now seen corresponding path program 2 times [2020-10-27 01:24:59,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:59,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650250548] [2020-10-27 01:24:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:59,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:00,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 01:25:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:25:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 01:25:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 01:25:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 01:25:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:04,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:04,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:05,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 01:25:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:25:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:06,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:25:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:06,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:06,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:06,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:06,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:25:06,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:25:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:06,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:06,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:25:06,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:25:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-27 01:25:06,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:25:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:25:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:08,209 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-27 01:25:14,375 WARN L193 SmtUtils]: Spent 5.33 s on a formula simplification. DAG size of input: 310 DAG size of output: 189 [2020-10-27 01:25:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:15,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:15,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:15,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:15,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:25:15,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:25:15,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650250548] [2020-10-27 01:25:15,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:25:15,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 01:25:15,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56304772] [2020-10-27 01:25:15,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 01:25:15,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:25:15,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 01:25:15,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2020-10-27 01:25:15,703 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 31 states. [2020-10-27 01:25:17,724 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 01:25:18,377 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-27 01:25:20,210 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 01:25:22,169 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 01:25:25,193 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-27 01:25:25,474 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-27 01:25:28,144 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-27 01:25:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:25:29,300 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 01:25:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:25:29,301 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2020-10-27 01:25:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:25:29,303 INFO L225 Difference]: With dead ends: 76 [2020-10-27 01:25:29,303 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 01:25:29,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=179, Invalid=2173, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 01:25:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 01:25:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2020-10-27 01:25:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 01:25:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-27 01:25:29,317 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 59 [2020-10-27 01:25:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:25:29,318 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-27 01:25:29,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 01:25:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-27 01:25:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 01:25:29,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:25:29,323 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] [2020-10-27 01:25:29,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:25:29,324 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:25:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:25:29,328 INFO L82 PathProgramCache]: Analyzing trace with hash 316256689, now seen corresponding path program 1 times [2020-10-27 01:25:29,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:25:29,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431488324] [2020-10-27 01:25:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:25:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:30,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:25:30,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-27 01:25:30,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 01:25:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 01:25:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:30,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:30,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:30,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:25:30,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:30,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:25:30,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:31,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:31,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:31,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:25:31,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:25:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:25:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:31,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:31,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:31,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:31,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:25:31,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:31,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:25:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:31,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:25:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 01:25:31,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:31,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:25:31,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:25:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:32,280 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-27 01:25:32,678 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-27 01:25:33,551 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2020-10-27 01:25:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:33,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:33,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 01:25:33,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:33,974 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-10-27 01:25:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:25:33,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431488324] [2020-10-27 01:25:33,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:25:33,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 01:25:33,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130874904] [2020-10-27 01:25:33,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 01:25:33,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:25:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 01:25:33,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:25:33,996 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 28 states. [2020-10-27 01:25:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:25:36,881 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2020-10-27 01:25:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:25:36,882 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2020-10-27 01:25:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:25:36,884 INFO L225 Difference]: With dead ends: 80 [2020-10-27 01:25:36,884 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 01:25:36,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=113, Invalid=1293, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:25:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 01:25:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2020-10-27 01:25:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 01:25:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-27 01:25:36,907 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 55 [2020-10-27 01:25:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:25:36,907 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-27 01:25:36,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 01:25:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-27 01:25:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 01:25:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:25:36,909 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] [2020-10-27 01:25:36,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:25:36,909 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:25:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:25:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1252470429, now seen corresponding path program 2 times [2020-10-27 01:25:36,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:25:36,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217184400] [2020-10-27 01:25:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:25:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:40,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3600 [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 01:25:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:25:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 01:25:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:25:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:25:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:41,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:25:41,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:25:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:42,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:25:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:42,689 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-27 01:25:43,209 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-10-27 01:25:43,690 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-10-27 01:25:44,675 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 01:25:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:44,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 01:25:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:45,496 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-27 01:25:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:25:45,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217184400] [2020-10-27 01:25:45,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:25:45,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 01:25:45,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628841284] [2020-10-27 01:25:45,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 01:25:45,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:25:45,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 01:25:45,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:25:45,527 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 29 states. [2020-10-27 01:25:46,531 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:25:51,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:25:51,109 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-27 01:25:51,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:25:51,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2020-10-27 01:25:51,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:25:51,112 INFO L225 Difference]: With dead ends: 79 [2020-10-27 01:25:51,113 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 01:25:51,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=139, Invalid=1753, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 01:25:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 01:25:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-27 01:25:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 01:25:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-27 01:25:51,129 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 56 [2020-10-27 01:25:51,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:25:51,129 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-27 01:25:51,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 01:25:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-27 01:25:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 01:25:51,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:25:51,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:25:51,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:25:51,131 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:25:51,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:25:51,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1696936327, now seen corresponding path program 2 times [2020-10-27 01:25:51,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:25:51,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347587286] [2020-10-27 01:25:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:25:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:51,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:56,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:56,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 01:25:56,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:25:56,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:25:56,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:56,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 01:25:56,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:56,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 01:25:56,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:56,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:56,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 01:25:56,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:57,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:57,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:57,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:25:57,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:25:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:25:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:57,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:57,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:25:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:57,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:57,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:25:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:58,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:58,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:25:58,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 01:25:58,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:25:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:25:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:59,266 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-27 01:25:59,910 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2020-10-27 01:26:21,495 WARN L193 SmtUtils]: Spent 20.45 s on a formula simplification. DAG size of input: 423 DAG size of output: 378 [2020-10-27 01:26:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:22,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:22,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:22,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:26:22,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:26:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:26:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:26:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:23,129 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-10-27 01:26:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:26:23,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347587286] [2020-10-27 01:26:23,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:26:23,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 01:26:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473106293] [2020-10-27 01:26:23,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 01:26:23,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:26:23,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 01:26:23,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=915, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:26:23,181 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 32 states. [2020-10-27 01:26:45,357 WARN L193 SmtUtils]: Spent 21.35 s on a formula simplification. DAG size of input: 379 DAG size of output: 357 [2020-10-27 01:26:46,081 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-27 01:27:10,428 WARN L193 SmtUtils]: Spent 23.84 s on a formula simplification. DAG size of input: 379 DAG size of output: 357 [2020-10-27 01:27:34,429 WARN L193 SmtUtils]: Spent 23.32 s on a formula simplification. DAG size of input: 381 DAG size of output: 359 [2020-10-27 01:27:36,647 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-27 01:27:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:40,180 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-10-27 01:27:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:27:40,185 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 63 [2020-10-27 01:27:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:40,186 INFO L225 Difference]: With dead ends: 94 [2020-10-27 01:27:40,187 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 01:27:40,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 96.9s TimeCoverageRelationStatistics Valid=155, Invalid=1915, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 01:27:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 01:27:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-10-27 01:27:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 01:27:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-10-27 01:27:40,205 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 63 [2020-10-27 01:27:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:40,205 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-10-27 01:27:40,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 01:27:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-10-27 01:27:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 01:27:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:40,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 01:27:40,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:27:40,207 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:40,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1690134299, now seen corresponding path program 3 times [2020-10-27 01:27:40,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:40,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239105466] [2020-10-27 01:27:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:41,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 01:27:41,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:27:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-10-27 01:27:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:27:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:27:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:41,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:41,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:41,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:27:41,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:41,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:27:41,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:27:41,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 01:27:41,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:41,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:27:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:41,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:41,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:27:41,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:41,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:27:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:41,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:41,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:27:41,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:41,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:41,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:27:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:41,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:27:41,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:27:41,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:27:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:41,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:41,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:27:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 01:27:41,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239105466] [2020-10-27 01:27:41,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:41,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:27:41,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251452474] [2020-10-27 01:27:41,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:27:41,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:41,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:27:41,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:27:41,995 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 9 states. [2020-10-27 01:27:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:42,632 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2020-10-27 01:27:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:27:42,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-27 01:27:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:42,636 INFO L225 Difference]: With dead ends: 100 [2020-10-27 01:27:42,636 INFO L226 Difference]: Without dead ends: 95 [2020-10-27 01:27:42,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:27:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-27 01:27:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2020-10-27 01:27:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 01:27:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2020-10-27 01:27:42,658 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 59 [2020-10-27 01:27:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:42,658 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2020-10-27 01:27:42,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:27:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2020-10-27 01:27:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:27:42,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:42,659 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:27:42,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:27:42,660 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:42,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:42,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1026970923, now seen corresponding path program 3 times [2020-10-27 01:27:42,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:42,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53390802] [2020-10-27 01:27:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:46,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:46,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:47,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:47,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:27:47,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:27:47,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 01:27:47,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 01:27:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 01:27:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:47,908 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-27 01:27:48,043 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-27 01:27:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:48,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:48,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:48,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:27:48,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-27 01:27:48,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:27:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 01:27:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:49,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:49,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:49,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:27:49,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:27:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:27:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:49,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:27:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:49,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:49,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:49,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:27:49,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:27:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:27:49,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:49,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:27:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:49,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:49,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:49,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:27:49,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:27:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:50,201 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-27 01:27:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:27:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:27:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:51,053 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-27 01:27:51,618 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-27 01:27:52,155 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-10-27 01:27:53,008 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-27 01:27:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:53,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:53,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:53,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 01:27:53,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:53,933 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-10-27 01:27:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:27:53,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53390802] [2020-10-27 01:27:53,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:53,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 01:27:53,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345941658] [2020-10-27 01:27:53,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 01:27:53,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:53,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 01:27:53,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 01:27:53,968 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand 33 states. [2020-10-27 01:27:54,947 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 01:27:57,361 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-27 01:27:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:58,746 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2020-10-27 01:27:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 01:27:58,748 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2020-10-27 01:27:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:58,749 INFO L225 Difference]: With dead ends: 104 [2020-10-27 01:27:58,749 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 01:27:58,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=164, Invalid=1998, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 01:27:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 01:27:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2020-10-27 01:27:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:27:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-27 01:27:58,766 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 64 [2020-10-27 01:27:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:58,766 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-27 01:27:58,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 01:27:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-27 01:27:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 01:27:58,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:58,767 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:27:58,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:27:58,767 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash 893003379, now seen corresponding path program 4 times [2020-10-27 01:27:58,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:58,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510222896] [2020-10-27 01:27:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:00,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:03,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:03,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 01:28:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:28:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:28:03,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 01:28:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:28:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 01:28:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:04,000 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2020-10-27 01:28:04,147 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-27 01:28:04,473 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-27 01:28:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:28:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:28:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:28:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:04,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:04,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:28:04,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 01:28:04,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:28:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:28:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:28:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:05,360 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-27 01:28:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:28:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:05,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:05,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:28:05,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:28:05,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:28:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:28:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:28:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:28:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:05,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:05,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:28:05,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:28:05,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:28:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:28:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:28:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:05,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:28:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:06,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:28:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 01:28:06,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:28:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:28:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:28:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:07,085 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-27 01:28:07,495 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-27 01:28:08,661 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 91