/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/heap-data/hash_fun.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:09:04,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:09:04,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:09:04,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:09:04,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:09:04,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:09:04,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:09:04,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:09:04,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:09:04,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:09:04,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:09:04,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:09:04,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:09:04,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:09:04,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:09:04,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:09:04,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:09:04,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:09:04,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:09:04,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:09:04,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:09:04,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:09:04,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:09:04,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:09:04,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:09:04,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:09:04,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:09:04,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:09:04,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:09:04,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:09:04,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:09:04,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:09:04,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:09:04,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:09:04,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:09:04,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:09:04,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:09:04,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:09:04,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:09:04,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:09:04,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:09:04,222 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 01:09:04,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:09:04,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:09:04,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:09:04,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:09:04,254 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:09:04,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:09:04,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:09:04,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:09:04,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:09:04,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:09:04,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:09:04,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:09:04,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:09:04,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:09:04,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:09:04,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:09:04,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:09:04,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:09:04,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:09:04,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:09:04,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:09:04,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:09:04,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:09:04,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:09:04,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:09:04,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:09:04,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:09:04,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:09:04,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:09:04,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:09:04,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:09:04,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:09:04,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:09:04,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:09:04,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:09:04,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/hash_fun.i [2020-10-27 01:09:04,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ffa78384/7f04228b0a4442a6819deeaf570f7414/FLAGb80d1ab18 [2020-10-27 01:09:05,371 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:09:05,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/hash_fun.i [2020-10-27 01:09:05,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ffa78384/7f04228b0a4442a6819deeaf570f7414/FLAGb80d1ab18 [2020-10-27 01:09:05,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ffa78384/7f04228b0a4442a6819deeaf570f7414 [2020-10-27 01:09:05,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:09:05,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:09:05,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:09:05,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:09:05,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:09:05,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:09:05" (1/1) ... [2020-10-27 01:09:05,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694a3a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:05, skipping insertion in model container [2020-10-27 01:09:05,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:09:05" (1/1) ... [2020-10-27 01:09:05,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:09:05,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:09:06,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:09:06,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:09:06,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:09:06,219 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:09:06,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06 WrapperNode [2020-10-27 01:09:06,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:09:06,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:09:06,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:09:06,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:09:06,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (1/1) ... [2020-10-27 01:09:06,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (1/1) ... [2020-10-27 01:09:06,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (1/1) ... [2020-10-27 01:09:06,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (1/1) ... [2020-10-27 01:09:06,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (1/1) ... [2020-10-27 01:09:06,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (1/1) ... [2020-10-27 01:09:06,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (1/1) ... [2020-10-27 01:09:06,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:09:06,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:09:06,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:09:06,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:09:06,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (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 01:09:06,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:09:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:09:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:09:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:09:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:09:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_fun [2020-10-27 01:09:06,374 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2020-10-27 01:09:06,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:09:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:09:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:09:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:09:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:09:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:09:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:09:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:09:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:09:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:09:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:09:06,376 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:09:06,376 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:09:06,376 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:09:06,376 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:09:06,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:09:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:09:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:09:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:09:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:09:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:09:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:09:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:09:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:09:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:09:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:09:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:09:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:09:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:09:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:09:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:09:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:09:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:09:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:09:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:09:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:09:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:09:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:09:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:09:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:09:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:09:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:09:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:09:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:09:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:09:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:09:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:09:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:09:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:09:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:09:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:09:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:09:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:09:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:09:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:09:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:09:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:09:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:09:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:09:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:09:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:09:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:09:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:09:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:09:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:09:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:09:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:09:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:09:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:09:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:09:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:09:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:09:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:09:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:09:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:09:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:09:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:09:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:09:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:09:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:09:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:09:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:09:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:09:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:09:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:09:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:09:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure hash_fun [2020-10-27 01:09:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2020-10-27 01:09:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:09:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:09:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:09:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:09:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:09:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:09:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:09:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:09:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:09:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:09:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:09:06,979 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:09:06,979 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 01:09:06,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:09:06 BoogieIcfgContainer [2020-10-27 01:09:06,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:09:06,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:09:06,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:09:06,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:09:06,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:09:05" (1/3) ... [2020-10-27 01:09:06,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f723e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:09:06, skipping insertion in model container [2020-10-27 01:09:06,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:09:06" (2/3) ... [2020-10-27 01:09:06,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f723e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:09:06, skipping insertion in model container [2020-10-27 01:09:06,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:09:06" (3/3) ... [2020-10-27 01:09:06,991 INFO L111 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2020-10-27 01:09:07,004 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:09:07,010 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:09:07,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:09:07,051 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:09:07,052 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:09:07,052 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:09:07,052 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:09:07,052 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:09:07,052 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:09:07,052 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:09:07,053 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:09:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 01:09:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 01:09:07,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:07,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:07,078 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1212155784, now seen corresponding path program 1 times [2020-10-27 01:09:07,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:07,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425582650] [2020-10-27 01:09:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:07,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:07,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:07,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:09:07,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:09:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-27 01:09:07,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:09:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:09:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:09:07,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:07,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:07,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:07,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:09:07,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:09:07,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425582650] [2020-10-27 01:09:07,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:09:07,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:09:07,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858083953] [2020-10-27 01:09:07,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:09:07,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:07,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:09:07,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:09:07,786 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-27 01:09:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:07,969 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2020-10-27 01:09:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:09:07,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-27 01:09:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:07,981 INFO L225 Difference]: With dead ends: 59 [2020-10-27 01:09:07,982 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 01:09:07,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:09:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 01:09:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-27 01:09:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 01:09:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-27 01:09:08,037 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 14 [2020-10-27 01:09:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:08,038 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-27 01:09:08,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:09:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-27 01:09:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 01:09:08,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:08,041 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:08,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:09:08,042 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:08,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:08,043 INFO L82 PathProgramCache]: Analyzing trace with hash -792739867, now seen corresponding path program 1 times [2020-10-27 01:09:08,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:08,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843271439] [2020-10-27 01:09:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:08,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:08,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:09:08,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:08,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-27 01:09:08,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:08,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:08,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:08,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:09:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:08,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:08,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:08,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:09:08,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:08,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:08,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:09:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:08,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:08,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:08,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:08,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 01:09:08,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:09:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:09:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 01:09:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:09:08,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843271439] [2020-10-27 01:09:08,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:08,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:09:08,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249397070] [2020-10-27 01:09:08,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:09:08,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:08,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:09:08,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:09:08,856 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 9 states. [2020-10-27 01:09:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:09,317 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-27 01:09:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:09:09,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-27 01:09:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:09,320 INFO L225 Difference]: With dead ends: 64 [2020-10-27 01:09:09,320 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 01:09:09,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:09:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 01:09:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-27 01:09:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 01:09:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-27 01:09:09,334 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 28 [2020-10-27 01:09:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:09,335 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-27 01:09:09,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:09:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-27 01:09:09,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 01:09:09,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:09,337 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:09,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:09:09,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:09,338 INFO L82 PathProgramCache]: Analyzing trace with hash -790892825, now seen corresponding path program 1 times [2020-10-27 01:09:09,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:09,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131197830] [2020-10-27 01:09:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:09,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:09,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:09,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:09:09,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:09:09,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-27 01:09:09,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:09:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:09,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:09,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:09,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:09,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:09,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:09,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:09,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:10,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:10,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:10,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:10,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:09:10,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:10,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:09:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:09:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:09:10,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131197830] [2020-10-27 01:09:10,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:10,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:09:10,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964673507] [2020-10-27 01:09:10,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:09:10,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:10,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:09:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:09:10,109 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2020-10-27 01:09:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:10,477 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2020-10-27 01:09:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:09:10,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-27 01:09:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:10,480 INFO L225 Difference]: With dead ends: 65 [2020-10-27 01:09:10,480 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 01:09:10,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:09:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 01:09:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 38. [2020-10-27 01:09:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 01:09:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-27 01:09:10,505 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 28 [2020-10-27 01:09:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:10,506 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-27 01:09:10,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:09:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-27 01:09:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 01:09:10,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:10,514 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] [2020-10-27 01:09:10,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:09:10,515 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:10,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1340240377, now seen corresponding path program 1 times [2020-10-27 01:09:10,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:10,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394251710] [2020-10-27 01:09:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:11,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:11,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 01:09:11,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:09:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-27 01:09:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:09:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:09:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:09:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:11,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:11,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:11,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:11,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:11,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:11,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:11,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:11,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:11,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:09:11,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:11,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:09:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:11,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:11,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:11,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:11,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:09:11,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:09:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:12,394 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-10-27 01:09:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:09:12,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394251710] [2020-10-27 01:09:12,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:12,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:09:12,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977997628] [2020-10-27 01:09:12,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:09:12,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:12,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:09:12,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:09:12,410 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 11 states. [2020-10-27 01:09:12,878 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 01:09:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:13,571 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2020-10-27 01:09:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:09:13,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-27 01:09:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:13,574 INFO L225 Difference]: With dead ends: 62 [2020-10-27 01:09:13,574 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 01:09:13,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:09:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 01:09:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 01:09:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 01:09:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-27 01:09:13,586 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 33 [2020-10-27 01:09:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:13,587 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-27 01:09:13,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:09:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-27 01:09:13,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:09:13,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:13,589 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:13,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:09:13,589 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash -522218703, now seen corresponding path program 2 times [2020-10-27 01:09:13,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:13,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202069217] [2020-10-27 01:09:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:14,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:14,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:09:14,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-27 01:09:14,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:09:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 01:09:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:14,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:14,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:14,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:09:14,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:14,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:14,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:14,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:09:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:09:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:14,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:14,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 01:09:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:09:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:09:14,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:09:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:14,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:14,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:14,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:09:14,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:14,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:09:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:14,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:14,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:14,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 01:09:14,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:14,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:14,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:09:14,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202069217] [2020-10-27 01:09:14,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:14,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:09:14,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695247272] [2020-10-27 01:09:14,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:09:14,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:14,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:09:14,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:09:14,965 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 12 states. [2020-10-27 01:09:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:15,953 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2020-10-27 01:09:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:09:15,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-27 01:09:15,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:15,956 INFO L225 Difference]: With dead ends: 86 [2020-10-27 01:09:15,956 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 01:09:15,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:09:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 01:09:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2020-10-27 01:09:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:09:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-10-27 01:09:15,973 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 46 [2020-10-27 01:09:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:15,973 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-10-27 01:09:15,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:09:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-10-27 01:09:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:09:15,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:15,975 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:15,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:09:15,976 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:15,976 INFO L82 PathProgramCache]: Analyzing trace with hash -520371661, now seen corresponding path program 1 times [2020-10-27 01:09:15,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:15,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249778372] [2020-10-27 01:09:15,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:16,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:16,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:17,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:17,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:09:17,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:09:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-27 01:09:17,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:09:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 01:09:17,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:17,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:17,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:17,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:17,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:17,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:17,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:17,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:09:17,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:09:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:17,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:17,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:17,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:17,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:09:17,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:09:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:09:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:17,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:09:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:17,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:17,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:09:17,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:09:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:17,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:17,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:17,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:17,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 01:09:17,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:17,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:09:18,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249778372] [2020-10-27 01:09:18,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:18,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:09:18,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378150627] [2020-10-27 01:09:18,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:09:18,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:18,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:09:18,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:09:18,078 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 12 states. [2020-10-27 01:09:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:19,090 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2020-10-27 01:09:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:09:19,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-27 01:09:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:19,094 INFO L225 Difference]: With dead ends: 87 [2020-10-27 01:09:19,094 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 01:09:19,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:09:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 01:09:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-10-27 01:09:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:09:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-27 01:09:19,122 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 46 [2020-10-27 01:09:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:19,122 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-27 01:09:19,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:09:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-27 01:09:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 01:09:19,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:19,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:19,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:09:19,127 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:19,127 INFO L82 PathProgramCache]: Analyzing trace with hash 190762541, now seen corresponding path program 3 times [2020-10-27 01:09:19,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:19,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976289324] [2020-10-27 01:09:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:20,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:22,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:09:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:09:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3574 [2020-10-27 01:09:22,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:09:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:09:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:23,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:23,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:09:23,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:23,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:23,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:23,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:23,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:23,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:23,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:23,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:23,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:09:23,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:09:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:24,035 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-27 01:09:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:09:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:24,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:09:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:09:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:09:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:24,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:24,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:24,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 01:09:24,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:24,502 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-27 01:09:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:09:24,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976289324] [2020-10-27 01:09:24,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:24,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:09:24,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083597247] [2020-10-27 01:09:24,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:09:24,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:24,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:09:24,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:09:24,545 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 14 states. [2020-10-27 01:09:25,067 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 01:09:26,562 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 143 DAG size of output: 143 [2020-10-27 01:09:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:27,864 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2020-10-27 01:09:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:09:27,865 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-27 01:09:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:27,867 INFO L225 Difference]: With dead ends: 79 [2020-10-27 01:09:27,867 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 01:09:27,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:09:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 01:09:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-27 01:09:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 01:09:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2020-10-27 01:09:27,882 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 51 [2020-10-27 01:09:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:27,882 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2020-10-27 01:09:27,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:09:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2020-10-27 01:09:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:09:27,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:27,884 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:27,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:09:27,884 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:27,885 INFO L82 PathProgramCache]: Analyzing trace with hash 721097061, now seen corresponding path program 4 times [2020-10-27 01:09:27,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:27,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108508816] [2020-10-27 01:09:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:27,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:29,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:09:29,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:29,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1482 [2020-10-27 01:09:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:09:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 01:09:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:29,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:29,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:29,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:09:29,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:29,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:09:29,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:29,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:09:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:09:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:09:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:29,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:09:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:29,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:29,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:29,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:09:29,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:29,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:09:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:29,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:09:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:30,235 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-27 01:09:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:09:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:30,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:30,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:30,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:09:30,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:09:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 01:09:30,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:31,354 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 108 [2020-10-27 01:09:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 01:09:31,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108508816] [2020-10-27 01:09:31,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:31,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:09:31,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056672323] [2020-10-27 01:09:31,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:09:31,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:31,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:09:31,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:09:31,587 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 15 states. [2020-10-27 01:09:32,797 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2020-10-27 01:09:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:35,207 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2020-10-27 01:09:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:09:35,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-27 01:09:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:35,210 INFO L225 Difference]: With dead ends: 108 [2020-10-27 01:09:35,211 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 01:09:35,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:09:35,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 01:09:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 62. [2020-10-27 01:09:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 01:09:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2020-10-27 01:09:35,226 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 64 [2020-10-27 01:09:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:35,226 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2020-10-27 01:09:35,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:09:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2020-10-27 01:09:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:09:35,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:35,228 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:35,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:09:35,228 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash 722944103, now seen corresponding path program 2 times [2020-10-27 01:09:35,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:35,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680660306] [2020-10-27 01:09:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:37,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:37,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:09:37,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:09:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2204 [2020-10-27 01:09:37,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:09:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 01:09:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:37,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:37,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:37,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:09:37,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:37,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:37,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:37,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:09:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:37,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:37,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:09:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:09:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:09:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:37,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:09:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:37,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:37,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:37,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:37,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:37,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:09:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:37,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:37,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:37,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:09:37,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:38,167 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-27 01:09:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:09:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:38,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:09:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:38,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:38,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:38,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 01:09:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:39,934 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2020-10-27 01:09:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 01:09:39,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680660306] [2020-10-27 01:09:39,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:39,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:09:39,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085980650] [2020-10-27 01:09:39,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:09:39,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:09:39,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:09:39,984 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand 15 states. [2020-10-27 01:09:41,451 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 142 DAG size of output: 142 [2020-10-27 01:09:43,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:43,968 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2020-10-27 01:09:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:09:43,969 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-27 01:09:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:43,971 INFO L225 Difference]: With dead ends: 109 [2020-10-27 01:09:43,971 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 01:09:43,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:09:43,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 01:09:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62. [2020-10-27 01:09:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 01:09:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2020-10-27 01:09:43,987 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 64 [2020-10-27 01:09:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:43,988 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2020-10-27 01:09:43,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:09:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2020-10-27 01:09:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 01:09:43,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:43,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:43,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:09:43,990 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:43,991 INFO L82 PathProgramCache]: Analyzing trace with hash 897454201, now seen corresponding path program 5 times [2020-10-27 01:09:43,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:43,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264244018] [2020-10-27 01:09:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:49,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 01:09:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:09:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 01:09:49,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:09:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 01:09:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:49,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:49,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:49,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:49,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:49,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:09:49,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:49,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:49,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:49,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:09:49,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:49,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:09:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:49,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:49,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:49,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:09:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:49,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:09:49,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:50,188 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-27 01:09:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:09:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:50,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:50,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:50,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:09:50,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:50,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:09:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:50,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:50,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:50,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 01:09:50,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:51,484 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2020-10-27 01:09:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 01:09:51,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264244018] [2020-10-27 01:09:51,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:51,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:09:51,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17246551] [2020-10-27 01:09:51,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:09:51,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:51,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:09:51,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:09:51,525 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand 15 states. [2020-10-27 01:09:52,306 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2020-10-27 01:09:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:09:53,149 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-27 01:09:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:09:53,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-27 01:09:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:09:53,151 INFO L225 Difference]: With dead ends: 96 [2020-10-27 01:09:53,151 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 01:09:53,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:09:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 01:09:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-27 01:09:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 01:09:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2020-10-27 01:09:53,166 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 69 [2020-10-27 01:09:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:09:53,166 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2020-10-27 01:09:53,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:09:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2020-10-27 01:09:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 01:09:53,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:09:53,168 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:09:53,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:09:53,168 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:09:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:09:53,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1158351439, now seen corresponding path program 6 times [2020-10-27 01:09:53,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:09:53,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289767020] [2020-10-27 01:09:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:09:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 01:09:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2604 [2020-10-27 01:09:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 01:09:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:09:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 01:09:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:09:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:56,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:56,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:09:56,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:09:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:09:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:09:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:56,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:56,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:09:56,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:09:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:56,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:56,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:56,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:09:56,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:09:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:09:56,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:56,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:09:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:09:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 01:09:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:56,845 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 01:09:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:09:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:56,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:56,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:56,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:09:56,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:56,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:09:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 01:09:56,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:57,660 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 105 [2020-10-27 01:09:57,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:09:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:57,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:57,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:57,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:57,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:09:57,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:57,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:09:57,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:09:57,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:09:57,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:09:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:09:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:09:57,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:09:57,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:09:57,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:09:57,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:09:57,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:09:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:09:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:09:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:09:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:09:58,416 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-10-27 01:09:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 18 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 01:09:58,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289767020] [2020-10-27 01:09:58,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:09:58,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:09:58,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257064388] [2020-10-27 01:09:58,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:09:58,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:09:58,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:09:58,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:09:58,705 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand 18 states. [2020-10-27 01:10:00,159 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 146 DAG size of output: 112 [2020-10-27 01:10:02,075 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-27 01:10:02,592 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-27 01:10:03,535 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 01:10:03,877 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-27 01:10:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:04,813 INFO L93 Difference]: Finished difference Result 130 states and 166 transitions. [2020-10-27 01:10:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 01:10:04,814 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-10-27 01:10:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:04,815 INFO L225 Difference]: With dead ends: 130 [2020-10-27 01:10:04,815 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 01:10:04,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 01:10:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 01:10:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2020-10-27 01:10:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:10:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-10-27 01:10:04,834 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 82 [2020-10-27 01:10:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:04,835 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-10-27 01:10:04,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:10:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-10-27 01:10:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 01:10:04,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:04,837 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:04,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:10:04,837 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:04,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1156504397, now seen corresponding path program 3 times [2020-10-27 01:10:04,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:04,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828839651] [2020-10-27 01:10:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:07,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:07,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 01:10:07,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:10:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-10-27 01:10:07,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 01:10:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:10:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 01:10:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:08,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:08,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:10:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:10:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:10:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:10:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:08,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:08,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:08,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:10:08,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:08,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:10:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:10:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:10:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:08,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:10:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:08,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:08,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:08,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:10:08,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:10:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:08,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:08,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:08,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:10:08,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:08,437 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 01:10:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:10:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:08,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:08,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:08,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:08,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:08,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:10:08,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:08,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:08,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:08,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:08,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:10:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:08,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:08,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:08,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:08,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 01:10:08,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:08,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:08,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:09,356 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-27 01:10:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:10:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:09,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:09,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:09,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:09,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:10:09,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:10:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:09,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:09,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:09,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 01:10:09,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:10,641 WARN L193 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-10-27 01:10:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 68 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 01:10:10,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828839651] [2020-10-27 01:10:10,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:10:10,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:10:10,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009577600] [2020-10-27 01:10:10,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:10:10,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:10,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:10:10,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:10:10,707 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 18 states. [2020-10-27 01:10:12,948 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 143 DAG size of output: 133 [2020-10-27 01:10:14,833 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-27 01:10:15,244 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-27 01:10:16,313 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-27 01:10:16,668 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-27 01:10:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:17,502 INFO L93 Difference]: Finished difference Result 131 states and 165 transitions. [2020-10-27 01:10:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 01:10:17,503 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-10-27 01:10:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:17,505 INFO L225 Difference]: With dead ends: 131 [2020-10-27 01:10:17,505 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 01:10:17,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=341, Invalid=1299, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 01:10:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 01:10:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2020-10-27 01:10:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:10:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-27 01:10:17,519 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 82 [2020-10-27 01:10:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:17,520 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-27 01:10:17,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:10:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-27 01:10:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 01:10:17,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:17,521 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:17,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:10:17,522 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1271069613, now seen corresponding path program 7 times [2020-10-27 01:10:17,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:17,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731907859] [2020-10-27 01:10:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:22,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 01:10:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:10:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:10:22,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 01:10:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:10:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 01:10:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:23,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:23,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:23,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:23,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:10:23,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:10:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:10:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:10:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:23,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:23,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:23,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:10:23,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:10:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:23,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:23,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 01:10:23,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:10:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:23,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:23,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:23,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:23,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:10:23,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:10:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:23,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 01:10:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:23,911 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-27 01:10:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:10:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:23,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:10:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:23,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:10:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:23,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:23,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:23,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 01:10:23,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:24,400 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-27 01:10:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:10:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:10:24,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:10:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:24,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:24,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 01:10:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:24,769 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 01:10:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 98 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 01:10:24,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731907859] [2020-10-27 01:10:24,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:10:24,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:10:24,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034157623] [2020-10-27 01:10:24,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:10:24,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:24,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:10:24,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:10:24,901 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 18 states. [2020-10-27 01:10:25,711 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-27 01:10:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:27,196 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2020-10-27 01:10:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:10:27,198 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 87 [2020-10-27 01:10:27,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:27,200 INFO L225 Difference]: With dead ends: 113 [2020-10-27 01:10:27,200 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 01:10:27,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:10:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 01:10:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-27 01:10:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 01:10:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2020-10-27 01:10:27,216 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 87 [2020-10-27 01:10:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:27,219 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2020-10-27 01:10:27,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:10:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2020-10-27 01:10:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 01:10:27,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:27,221 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:27,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:10:27,221 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:27,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:27,221 INFO L82 PathProgramCache]: Analyzing trace with hash 108004069, now seen corresponding path program 8 times [2020-10-27 01:10:27,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:27,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46446562] [2020-10-27 01:10:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:31,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:31,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 01:10:31,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:31,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3969 [2020-10-27 01:10:31,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:31,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 01:10:31,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:10:31,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 01:10:31,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:31,801 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-27 01:10:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:32,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:32,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:32,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:10:32,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:10:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:10:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:10:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:32,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:32,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:32,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:10:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:10:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:32,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:10:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:10:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:10:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:32,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:32,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:32,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:10:32,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:10:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:32,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:32,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 01:10:32,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:32,710 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 01:10:32,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:10:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:32,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:32,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:32,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:10:32,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:32,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:10:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:32,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:32,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:32,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 01:10:32,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:33,486 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 01:10:33,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:10:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:33,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:33,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:33,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:10:33,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:33,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:10:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:33,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:34,424 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-27 01:10:34,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 01:10:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 01:10:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:34,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:34,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:34,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 01:10:34,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:35,715 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 103 [2020-10-27 01:10:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 24 proven. 122 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 01:10:35,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46446562] [2020-10-27 01:10:35,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:10:35,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:10:35,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998212590] [2020-10-27 01:10:35,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:10:35,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:10:35,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:10:35,838 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand 21 states. [2020-10-27 01:10:37,763 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2020-10-27 01:10:40,234 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-27 01:10:40,636 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-27 01:10:41,395 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-27 01:10:42,099 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-10-27 01:10:42,467 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-27 01:10:42,761 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-27 01:10:43,985 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-27 01:10:44,550 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-10-27 01:10:44,822 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 01:10:45,092 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-27 01:10:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:46,211 INFO L93 Difference]: Finished difference Result 152 states and 194 transitions. [2020-10-27 01:10:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 01:10:46,212 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-10-27 01:10:46,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:46,215 INFO L225 Difference]: With dead ends: 152 [2020-10-27 01:10:46,215 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 01:10:46,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=500, Invalid=1950, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 01:10:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 01:10:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 86. [2020-10-27 01:10:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 01:10:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2020-10-27 01:10:46,243 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 100 [2020-10-27 01:10:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:46,243 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2020-10-27 01:10:46,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:10:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2020-10-27 01:10:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 01:10:46,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:46,245 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:46,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:10:46,245 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:46,246 INFO L82 PathProgramCache]: Analyzing trace with hash 109851111, now seen corresponding path program 4 times [2020-10-27 01:10:46,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:46,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897179724] [2020-10-27 01:10:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:51,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:51,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 01:10:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:10:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:10:51,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 01:10:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:10:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 01:10:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:10:51,786 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-27 01:10:51,920 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 01:10:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:10:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:10:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:10:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:10:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:52,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:52,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:52,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:10:52,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:10:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:10:52,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:10:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:10:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:52,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:52,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:52,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:10:52,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:10:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:52,771 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 01:10:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:10:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:52,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:52,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:52,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:10:52,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:52,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:10:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:52,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:10:52,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:53,313 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 01:10:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:10:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:53,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:53,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:10:53,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:10:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:53,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:53,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 01:10:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:53,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:53,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:10:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 01:10:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:53,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:53,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:53,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:53,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 01:10:53,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:53,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:10:53,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:54,081 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 01:10:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 28 proven. 116 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 01:10:54,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897179724] [2020-10-27 01:10:54,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:10:54,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 01:10:54,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457836540] [2020-10-27 01:10:54,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:10:54,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:54,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:10:54,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:10:54,194 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 20 states. [2020-10-27 01:10:55,449 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-10-27 01:10:57,330 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-27 01:10:57,683 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-27 01:10:58,266 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 98 [2020-10-27 01:10:58,801 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2020-10-27 01:10:59,147 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 01:10:59,391 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 01:11:00,394 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2020-10-27 01:11:00,869 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2020-10-27 01:11:01,105 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-27 01:11:01,344 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-27 01:11:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:11:02,098 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2020-10-27 01:11:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 01:11:02,099 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 100 [2020-10-27 01:11:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:11:02,101 INFO L225 Difference]: With dead ends: 153 [2020-10-27 01:11:02,101 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 01:11:02,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=505, Invalid=1847, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 01:11:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 01:11:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 86. [2020-10-27 01:11:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 01:11:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2020-10-27 01:11:02,118 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 100 [2020-10-27 01:11:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:11:02,118 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2020-10-27 01:11:02,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:11:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2020-10-27 01:11:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 01:11:02,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:11:02,120 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:11:02,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:11:02,120 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:11:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:11:02,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2095320825, now seen corresponding path program 9 times [2020-10-27 01:11:02,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:11:02,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736952753] [2020-10-27 01:11:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:11:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:07,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:07,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 01:11:07,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:11:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:11:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 01:11:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:11:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 01:11:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:09,153 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-27 01:11:09,920 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 71 [2020-10-27 01:11:10,924 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 62 [2020-10-27 01:11:11,824 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2020-10-27 01:11:12,108 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-10-27 01:11:12,266 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-27 01:11:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:11:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:11:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:11:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:11:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:12,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:12,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:12,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:12,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 01:11:12,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:11:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:12,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:11:12,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:11:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:13,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:13,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 01:11:13,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:13,435 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-27 01:11:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:11:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:13,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:13,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:13,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:13,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:11:13,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:13,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:13,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:13,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:11:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:13,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:13,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:13,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 01:11:13,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:14,306 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-10-27 01:11:14,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:11:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:14,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:14,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:14,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:11:14,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:14,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:11:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:14,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:14,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:14,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 01:11:14,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:11:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:14,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:27,021 WARN L193 SmtUtils]: Spent 11.08 s on a formula simplification. DAG size of input: 406 DAG size of output: 231 [2020-10-27 01:11:27,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 01:11:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 01:11:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 17 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 01:11:28,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736952753] [2020-10-27 01:11:28,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:11:28,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:11:28,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487773031] [2020-10-27 01:11:28,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:11:28,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:11:28,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:11:28,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:11:28,100 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand 23 states. [2020-10-27 01:11:32,319 WARN L193 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 230 DAG size of output: 230 [2020-10-27 01:11:40,095 WARN L193 SmtUtils]: Spent 6.75 s on a formula simplification. DAG size of input: 307 DAG size of output: 273 [2020-10-27 01:11:43,141 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2020-10-27 01:11:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:11:46,975 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2020-10-27 01:11:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:11:46,977 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 105 [2020-10-27 01:11:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:11:46,978 INFO L225 Difference]: With dead ends: 130 [2020-10-27 01:11:46,978 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 01:11:46,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:11:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 01:11:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-27 01:11:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 01:11:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 120 transitions. [2020-10-27 01:11:47,000 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 120 transitions. Word has length 105 [2020-10-27 01:11:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:11:47,000 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 120 transitions. [2020-10-27 01:11:47,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:11:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 120 transitions. [2020-10-27 01:11:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 01:11:47,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:11:47,002 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:11:47,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:11:47,003 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:11:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:11:47,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1816311857, now seen corresponding path program 10 times [2020-10-27 01:11:47,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:11:47,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242679815] [2020-10-27 01:11:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:11:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:52,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 01:11:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:52,758 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:11:52,935 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 01:11:53,100 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-27 01:11:53,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:11:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:53,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:11:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:11:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:11:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:53,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:11:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:11:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:53,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:11:53,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:11:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:11:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:11:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:11:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:53,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:53,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:53,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:11:53,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:54,047 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-27 01:11:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:11:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:54,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:11:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:54,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:54,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:54,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:11:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:54,915 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 100 [2020-10-27 01:11:54,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:11:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:54,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:11:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:54,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:56,098 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-27 01:11:56,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 01:11:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:56,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 01:11:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:56,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:57,158 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-27 01:11:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 01:11:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:57,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:11:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:57,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 01:11:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:57,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:57,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:57,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 01:11:57,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:58,384 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2020-10-27 01:11:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 30 proven. 187 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 01:11:58,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242679815] [2020-10-27 01:11:58,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:11:58,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:11:58,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630584059] [2020-10-27 01:11:58,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:11:58,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:11:58,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:11:58,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:11:58,566 INFO L87 Difference]: Start difference. First operand 93 states and 120 transitions. Second operand 24 states. [2020-10-27 01:12:00,778 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 141 DAG size of output: 138 [2020-10-27 01:12:02,650 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 01:12:03,079 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-27 01:12:03,733 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-27 01:12:04,206 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-27 01:12:04,947 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-10-27 01:12:05,483 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-27 01:12:06,428 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 113 [2020-10-27 01:12:07,427 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2020-10-27 01:12:08,043 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2020-10-27 01:12:08,516 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2020-10-27 01:12:08,867 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-27 01:12:09,250 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-27 01:12:09,518 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 01:12:09,785 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 01:12:11,131 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 111 [2020-10-27 01:12:11,955 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2020-10-27 01:12:12,413 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2020-10-27 01:12:12,860 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2020-10-27 01:12:13,171 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-10-27 01:12:13,497 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-27 01:12:13,975 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 01:12:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:12:14,801 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2020-10-27 01:12:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 01:12:14,803 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2020-10-27 01:12:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:12:14,805 INFO L225 Difference]: With dead ends: 174 [2020-10-27 01:12:14,805 INFO L226 Difference]: Without dead ends: 170 [2020-10-27 01:12:14,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=705, Invalid=2717, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 01:12:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-27 01:12:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 98. [2020-10-27 01:12:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 01:12:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2020-10-27 01:12:14,828 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 118 [2020-10-27 01:12:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:12:14,828 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2020-10-27 01:12:14,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:12:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2020-10-27 01:12:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 01:12:14,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:14,830 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:12:14,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 01:12:14,830 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1818158899, now seen corresponding path program 5 times [2020-10-27 01:12:14,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:14,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843712236] [2020-10-27 01:12:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:15,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:20,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:20,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 01:12:20,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:12:20,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5451 [2020-10-27 01:12:20,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 01:12:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:12:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 01:12:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:21,028 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-27 01:12:21,179 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-27 01:12:21,388 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-27 01:12:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:21,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:21,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:21,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:12:21,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:12:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:12:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:12:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:21,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:21,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:21,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:12:21,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:21,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:21,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:12:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:21,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:12:21,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:12:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:12:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:12:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:21,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:12:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:22,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:22,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 01:12:22,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:22,390 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-27 01:12:22,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:12:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:22,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:22,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:22,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:22,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:12:22,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:12:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:22,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:23,295 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-10-27 01:12:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 01:12:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:23,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:12:23,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:23,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 01:12:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:23,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:23,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:12:23,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:24,247 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-27 01:12:24,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 01:12:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:24,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:24,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:24,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:12:24,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 01:12:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:24,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 01:12:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:25,240 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-27 01:12:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 01:12:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:25,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:25,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:25,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:12:25,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 01:12:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:26,473 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-10-27 01:12:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 35 proven. 182 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 01:12:26,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843712236] [2020-10-27 01:12:26,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:12:26,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:12:26,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585616281] [2020-10-27 01:12:26,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:12:26,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:12:26,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:12:26,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:12:26,646 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand 24 states. [2020-10-27 01:12:28,778 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 144 DAG size of output: 131 [2020-10-27 01:12:31,582 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 01:12:32,116 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 01:12:32,772 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-27 01:12:33,375 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 01:12:34,368 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2020-10-27 01:12:35,314 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2020-10-27 01:12:36,021 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-10-27 01:12:36,456 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2020-10-27 01:12:36,832 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-27 01:12:37,236 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-27 01:12:38,809 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 106 [2020-10-27 01:12:39,509 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2020-10-27 01:12:39,969 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-27 01:12:40,418 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-10-27 01:12:40,767 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 01:12:41,107 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 01:12:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:12:42,662 INFO L93 Difference]: Finished difference Result 175 states and 221 transitions. [2020-10-27 01:12:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 01:12:42,664 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2020-10-27 01:12:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:12:42,666 INFO L225 Difference]: With dead ends: 175 [2020-10-27 01:12:42,666 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 01:12:42,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=704, Invalid=2718, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 01:12:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 01:12:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 98. [2020-10-27 01:12:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 01:12:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2020-10-27 01:12:42,684 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 118 [2020-10-27 01:12:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:12:42,685 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2020-10-27 01:12:42,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:12:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2020-10-27 01:12:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 01:12:42,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:42,686 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:12:42,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 01:12:42,687 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:42,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1227540781, now seen corresponding path program 11 times [2020-10-27 01:12:42,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:42,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371177425] [2020-10-27 01:12:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:48,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:48,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 01:12:48,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:12:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5235 [2020-10-27 01:12:48,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:12:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:12:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 01:12:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:49,382 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-10-27 01:12:49,689 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-27 01:12:50,126 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2020-10-27 01:12:50,567 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-10-27 01:12:51,059 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2020-10-27 01:12:51,299 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-27 01:12:51,494 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-10-27 01:12:51,666 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-10-27 01:12:51,986 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 26 [2020-10-27 01:12:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:12:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:52,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:12:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:52,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:52,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:52,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:12:52,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:12:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:52,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:52,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:52,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:12:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:52,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:52,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:52,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:52,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:12:52,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:52,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:12:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:53,058 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-27 01:12:53,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:12:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:53,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:53,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:53,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:12:53,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:12:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 01:12:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:53,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:53,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:53,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:12:53,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:12:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0