/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/heap-data/hash_fun.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:33:41,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:33:41,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:33:41,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:33:41,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:33:41,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:33:41,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:33:41,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:33:41,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:33:41,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:33:41,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:33:41,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:33:41,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:33:41,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:33:41,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:33:41,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:33:41,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:33:41,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:33:41,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:33:41,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:33:41,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:33:41,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:33:41,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:33:41,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:33:41,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:33:41,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:33:41,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:33:41,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:33:41,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:33:41,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:33:41,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:33:41,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:33:41,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:33:41,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:33:41,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:33:41,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:33:41,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:33:41,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:33:41,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:33:41,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:33:41,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:33:41,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:33:41,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:33:41,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:33:41,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:33:41,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:33:41,318 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:33:41,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:33:41,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:33:41,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:33:41,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:33:41,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:33:41,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:33:41,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:33:41,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:33:41,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:33:41,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:33:41,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:33:41,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:33:41,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:33:41,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:33:41,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:33:41,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:33:41,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:33:41,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:33:41,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:33:41,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:33:41,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:33:41,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:33:41,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:33:41,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:33:41,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:33:41,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:33:41,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:33:41,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:33:41,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:33:41,802 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:33:41,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/hash_fun.i [2020-10-28 14:33:41,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d6ed9edd/a53bbb43c58b469099acbdd99c597278/FLAG96e534bf6 [2020-10-28 14:33:42,632 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:33:42,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/hash_fun.i [2020-10-28 14:33:42,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d6ed9edd/a53bbb43c58b469099acbdd99c597278/FLAG96e534bf6 [2020-10-28 14:33:42,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d6ed9edd/a53bbb43c58b469099acbdd99c597278 [2020-10-28 14:33:42,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:33:42,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:33:42,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:33:42,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:33:42,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:33:42,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:33:42" (1/1) ... [2020-10-28 14:33:42,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122e467f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:42, skipping insertion in model container [2020-10-28 14:33:42,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:33:42" (1/1) ... [2020-10-28 14:33:42,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:33:43,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:33:43,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:33:43,373 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:33:43,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:33:43,511 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:33:43,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43 WrapperNode [2020-10-28 14:33:43,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:33:43,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:33:43,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:33:43,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:33:43,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... [2020-10-28 14:33:43,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... [2020-10-28 14:33:43,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... [2020-10-28 14:33:43,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... [2020-10-28 14:33:43,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... [2020-10-28 14:33:43,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... [2020-10-28 14:33:43,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... [2020-10-28 14:33:43,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:33:43,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:33:43,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:33:43,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:33:43,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:33:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:33:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_fun [2020-10-28 14:33:43,761 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2020-10-28 14:33:43,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:33:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:33:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:33:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:33:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:33:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:33:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:33:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:33:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure hash_fun [2020-10-28 14:33:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2020-10-28 14:33:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:33:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:33:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:33:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:33:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:33:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:33:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:33:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:33:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:33:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:33:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:33:44,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:33:44,276 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 14:33:44,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:33:44 BoogieIcfgContainer [2020-10-28 14:33:44,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:33:44,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:33:44,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:33:44,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:33:44,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:33:42" (1/3) ... [2020-10-28 14:33:44,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e585eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:33:44, skipping insertion in model container [2020-10-28 14:33:44,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:33:43" (2/3) ... [2020-10-28 14:33:44,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e585eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:33:44, skipping insertion in model container [2020-10-28 14:33:44,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:33:44" (3/3) ... [2020-10-28 14:33:44,290 INFO L111 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2020-10-28 14:33:44,302 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:33:44,307 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:33:44,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:33:44,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:33:44,350 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:33:44,351 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:33:44,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:33:44,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:33:44,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:33:44,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:33:44,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:33:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 14:33:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 14:33:44,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:44,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:44,378 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:44,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:44,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1212155784, now seen corresponding path program 1 times [2020-10-28 14:33:44,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:44,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874449153] [2020-10-28 14:33:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:44,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:44,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:33:44,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-28 14:33:44,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:44,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:33:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:44,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:33:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:45,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:45,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:45,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:33:45,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:45,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:45,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:45,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874449153] [2020-10-28 14:33:45,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:45,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:33:45,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883937843] [2020-10-28 14:33:45,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:33:45,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:45,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:33:45,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:33:45,114 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 14:33:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:45,221 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-10-28 14:33:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:33:45,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-28 14:33:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:45,235 INFO L225 Difference]: With dead ends: 49 [2020-10-28 14:33:45,235 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 14:33:45,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:33:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 14:33:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 14:33:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 14:33:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 14:33:45,284 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 14 [2020-10-28 14:33:45,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:45,284 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 14:33:45,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:33:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 14:33:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 14:33:45,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:45,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:45,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:33:45,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1220132691, now seen corresponding path program 1 times [2020-10-28 14:33:45,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:45,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809598093] [2020-10-28 14:33:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:45,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:45,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:33:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 14:33:45,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:45,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:33:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:45,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:45,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:33:45,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:45,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:45,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:45,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809598093] [2020-10-28 14:33:45,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:33:45,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:33:45,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911975160] [2020-10-28 14:33:45,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:33:45,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:33:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:33:45,616 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-28 14:33:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:45,805 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-28 14:33:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:33:45,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-28 14:33:45,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:45,807 INFO L225 Difference]: With dead ends: 46 [2020-10-28 14:33:45,807 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 14:33:45,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:33:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 14:33:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 14:33:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 14:33:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-28 14:33:45,823 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 15 [2020-10-28 14:33:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:45,823 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-28 14:33:45,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:33:45,824 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-28 14:33:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:33:45,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:45,826 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] [2020-10-28 14:33:45,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:33:45,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:45,827 INFO L82 PathProgramCache]: Analyzing trace with hash -792739867, now seen corresponding path program 1 times [2020-10-28 14:33:45,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:45,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944109504] [2020-10-28 14:33:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:46,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:33:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-28 14:33:46,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:46,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:33:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:33:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:46,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:46,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:46,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:33:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:46,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:46,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:33:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:46,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:46,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:46,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:46,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:33:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:46,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:46,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:33:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:46,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:33:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:33:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:46,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944109504] [2020-10-28 14:33:46,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:46,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:33:46,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720661743] [2020-10-28 14:33:46,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:33:46,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:46,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:33:46,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:33:46,500 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 9 states. [2020-10-28 14:33:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:46,858 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-28 14:33:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:33:46,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-28 14:33:46,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:46,861 INFO L225 Difference]: With dead ends: 64 [2020-10-28 14:33:46,861 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:33:46,862 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 [2020-10-28 14:33:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:33:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-28 14:33:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 14:33:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-28 14:33:46,874 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 28 [2020-10-28 14:33:46,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:46,874 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-28 14:33:46,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:33:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-28 14:33:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:33:46,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:46,876 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] [2020-10-28 14:33:46,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:33:46,876 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:46,877 INFO L82 PathProgramCache]: Analyzing trace with hash -790892825, now seen corresponding path program 1 times [2020-10-28 14:33:46,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:46,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108534598] [2020-10-28 14:33:46,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:47,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:33:47,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-28 14:33:47,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:47,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:33:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:33:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:33:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:47,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:47,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:47,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:47,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:47,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:47,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:33:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:47,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:47,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:47,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:47,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:33:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:47,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:47,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:33:47,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:47,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:33:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:33:47,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:47,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108534598] [2020-10-28 14:33:47,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:47,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:33:47,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837185492] [2020-10-28 14:33:47,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:33:47,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:47,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:33:47,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:33:47,451 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2020-10-28 14:33:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:47,789 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2020-10-28 14:33:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:33:47,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-28 14:33:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:47,791 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:33:47,791 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 14:33:47,792 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 [2020-10-28 14:33:47,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 14:33:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 38. [2020-10-28 14:33:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 14:33:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-28 14:33:47,801 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 28 [2020-10-28 14:33:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:47,801 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-28 14:33:47,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:33:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-28 14:33:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:33:47,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:47,803 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] [2020-10-28 14:33:47,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:33:47,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1340240377, now seen corresponding path program 1 times [2020-10-28 14:33:47,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:47,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417682274] [2020-10-28 14:33:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:48,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:48,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:33:48,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-28 14:33:48,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:48,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:33:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:33:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:48,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:48,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:48,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:33:48,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:48,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:33:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:48,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:48,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:48,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:48,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:33:48,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:48,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:48,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:48,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:33:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:33:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:48,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:33:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:33:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:33:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:50,130 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 118 [2020-10-28 14:33:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:50,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417682274] [2020-10-28 14:33:50,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:50,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:33:50,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962682389] [2020-10-28 14:33:50,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:33:50,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:50,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:33:50,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:33:50,148 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 11 states. [2020-10-28 14:33:50,657 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 14:33:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:51,422 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2020-10-28 14:33:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:33:51,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-28 14:33:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:51,425 INFO L225 Difference]: With dead ends: 62 [2020-10-28 14:33:51,425 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:33:51,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:33:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:33:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 14:33:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:33:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-28 14:33:51,449 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 33 [2020-10-28 14:33:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:51,449 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-28 14:33:51,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:33:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-28 14:33:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:33:51,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:51,455 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] [2020-10-28 14:33:51,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:33:51,456 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:51,457 INFO L82 PathProgramCache]: Analyzing trace with hash -522218703, now seen corresponding path program 2 times [2020-10-28 14:33:51,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:51,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353105385] [2020-10-28 14:33:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:52,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:52,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:33:52,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:52,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-28 14:33:52,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:52,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:33:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 14:33:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:33:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:52,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:33:52,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:52,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:33:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:52,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:52,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:52,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:33:52,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:52,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:52,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:33:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:52,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:52,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:52,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:33:52,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:52,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:33:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:33:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:33:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:52,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:52,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:52,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:33:52,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:52,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:33:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:52,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:52,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:52,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 14:33:52,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:52,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:33:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:33:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:33:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:33:52,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353105385] [2020-10-28 14:33:52,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:52,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:33:52,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153969729] [2020-10-28 14:33:52,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:33:52,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:33:52,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:33:52,894 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 12 states. [2020-10-28 14:33:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:53,899 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2020-10-28 14:33:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:33:53,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-28 14:33:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:53,902 INFO L225 Difference]: With dead ends: 86 [2020-10-28 14:33:53,902 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 14:33:53,902 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 [2020-10-28 14:33:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 14:33:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2020-10-28 14:33:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:33:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-10-28 14:33:53,913 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 46 [2020-10-28 14:33:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:53,915 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-10-28 14:33:53,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:33:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-10-28 14:33:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:33:53,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:53,925 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] [2020-10-28 14:33:53,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:33:53,925 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:53,927 INFO L82 PathProgramCache]: Analyzing trace with hash -520371661, now seen corresponding path program 1 times [2020-10-28 14:33:53,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:53,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357147138] [2020-10-28 14:33:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:33:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-28 14:33:55,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:33:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 14:33:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:33:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:33:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:33:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:33:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:55,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:33:55,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:55,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:33:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:55,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:55,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:33:55,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:33:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:33:55,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:33:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:55,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:33:55,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:33:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:33:55,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:33:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:55,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:55,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:55,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:33:55,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:55,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:33:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:33:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:33:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:55,932 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-28 14:33:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:33:55,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357147138] [2020-10-28 14:33:55,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:55,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:33:55,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601447473] [2020-10-28 14:33:55,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:33:55,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:55,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:33:55,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:33:55,949 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 12 states. [2020-10-28 14:33:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:56,916 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2020-10-28 14:33:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:33:56,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-28 14:33:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:56,919 INFO L225 Difference]: With dead ends: 87 [2020-10-28 14:33:56,919 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 14:33:56,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:33:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 14:33:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-10-28 14:33:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:33:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-28 14:33:56,930 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 46 [2020-10-28 14:33:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:56,931 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-28 14:33:56,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:33:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-28 14:33:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:33:56,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:56,932 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] [2020-10-28 14:33:56,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:33:56,932 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:56,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:56,933 INFO L82 PathProgramCache]: Analyzing trace with hash 190762541, now seen corresponding path program 3 times [2020-10-28 14:33:56,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:56,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758121522] [2020-10-28 14:33:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:00,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:34:00,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:34:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3476 [2020-10-28 14:34:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:00,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:34:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 14:34:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:00,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:00,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:00,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:00,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:00,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:00,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:00,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:34:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:00,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:00,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:00,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:00,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:00,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:00,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:00,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:00,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:34:00,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:00,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:34:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:00,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:00,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:00,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:00,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:34:00,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:00,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:00,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:00,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:00,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:00,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:34:00,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:00,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:00,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:01,418 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-28 14:34:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:34:01,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758121522] [2020-10-28 14:34:01,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:01,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:01,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642599101] [2020-10-28 14:34:01,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:01,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:01,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:01,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:01,444 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 12 states. [2020-10-28 14:34:01,925 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-28 14:34:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:02,447 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2020-10-28 14:34:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:34:02,448 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-28 14:34:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:02,452 INFO L225 Difference]: With dead ends: 79 [2020-10-28 14:34:02,452 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 14:34:02,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:34:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 14:34:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 14:34:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:34:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2020-10-28 14:34:02,474 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 51 [2020-10-28 14:34:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:02,478 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2020-10-28 14:34:02,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2020-10-28 14:34:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 14:34:02,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:02,480 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] [2020-10-28 14:34:02,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:34:02,481 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:02,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:02,481 INFO L82 PathProgramCache]: Analyzing trace with hash 721097061, now seen corresponding path program 4 times [2020-10-28 14:34:02,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:02,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620433994] [2020-10-28 14:34:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:02,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 14:34:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-10-28 14:34:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:03,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:34:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 14:34:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:04,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:04,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:04,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:04,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:04,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:04,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:04,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:34:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:04,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:04,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:04,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:04,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:04,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:34:04,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:04,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:34:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:34:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:04,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:04,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:34:04,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:04,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:04,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:04,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:04,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:04,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:04,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:34:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:04,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:04,772 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-28 14:34:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:34:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:04,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:04,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:04,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:04,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:34:04,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:04,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:04,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:04,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:04,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:34:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:04,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:04,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:04,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 14:34:04,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:04,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:04,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:05,792 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2020-10-28 14:34:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 14:34:05,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620433994] [2020-10-28 14:34:05,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:05,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:34:05,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969051588] [2020-10-28 14:34:05,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:34:05,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:05,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:34:05,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:34:05,828 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 15 states. [2020-10-28 14:34:06,947 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2020-10-28 14:34:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:09,172 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2020-10-28 14:34:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:34:09,173 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-28 14:34:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:09,174 INFO L225 Difference]: With dead ends: 108 [2020-10-28 14:34:09,174 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 14:34:09,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2020-10-28 14:34:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 14:34:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 62. [2020-10-28 14:34:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 14:34:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2020-10-28 14:34:09,189 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 64 [2020-10-28 14:34:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:09,189 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2020-10-28 14:34:09,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:34:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2020-10-28 14:34:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 14:34:09,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:09,191 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] [2020-10-28 14:34:09,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:34:09,191 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:09,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:09,192 INFO L82 PathProgramCache]: Analyzing trace with hash 722944103, now seen corresponding path program 2 times [2020-10-28 14:34:09,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:09,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134130242] [2020-10-28 14:34:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 14:34:11,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:11,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2141 [2020-10-28 14:34:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:34:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 14:34:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:11,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:11,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:34:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:11,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:11,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:11,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:34:11,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:34:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:34:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:11,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:11,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:34:11,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:11,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:11,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:11,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:11,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:34:11,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:11,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:34:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:12,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:12,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:12,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:12,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:12,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:34:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:12,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:12,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:12,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:34:12,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:12,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:12,752 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-28 14:34:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 14:34:12,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134130242] [2020-10-28 14:34:12,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:12,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:34:12,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384130299] [2020-10-28 14:34:12,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:34:12,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:12,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:34:12,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:34:12,782 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand 15 states. [2020-10-28 14:34:13,728 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-10-28 14:34:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:16,012 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2020-10-28 14:34:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:34:16,013 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-28 14:34:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:16,014 INFO L225 Difference]: With dead ends: 109 [2020-10-28 14:34:16,014 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 14:34:16,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2020-10-28 14:34:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 14:34:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62. [2020-10-28 14:34:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 14:34:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2020-10-28 14:34:16,027 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 64 [2020-10-28 14:34:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:16,028 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2020-10-28 14:34:16,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:34:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2020-10-28 14:34:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 14:34:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:16,029 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] [2020-10-28 14:34:16,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:34:16,029 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:16,030 INFO L82 PathProgramCache]: Analyzing trace with hash 897454201, now seen corresponding path program 5 times [2020-10-28 14:34:16,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:16,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715729552] [2020-10-28 14:34:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:16,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:18,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:21,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:21,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:34:21,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:34:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-28 14:34:21,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:21,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:34:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:34:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:21,743 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-10-28 14:34:21,911 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-10-28 14:34:22,219 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2020-10-28 14:34:22,374 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-10-28 14:34:22,547 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-10-28 14:34:22,758 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-10-28 14:34:23,018 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2020-10-28 14:34:23,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:23,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:23,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:23,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:23,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:23,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:34:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:23,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:23,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:23,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:23,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:23,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:34:23,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:24,298 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2020-10-28 14:34:24,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:34:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:24,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:24,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:24,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:34:24,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:24,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:24,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:24,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:24,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:34:24,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:24,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:24,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:25,018 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-28 14:34:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:34:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:25,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:25,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:25,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:25,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:34:25,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:25,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:25,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:34:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:25,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:25,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:25,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:25,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 14:34:25,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:25,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:34:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:25,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:33,092 WARN L193 SmtUtils]: Spent 6.96 s on a formula simplification. DAG size of input: 411 DAG size of output: 196 [2020-10-28 14:34:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 14:34:33,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715729552] [2020-10-28 14:34:33,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:33,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 14:34:33,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322228701] [2020-10-28 14:34:33,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:34:33,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:33,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:34:33,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:34:33,627 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand 19 states. [2020-10-28 14:34:36,271 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 214 DAG size of output: 210 [2020-10-28 14:34:39,115 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 224 DAG size of output: 220 [2020-10-28 14:34:42,721 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 254 DAG size of output: 250 [2020-10-28 14:34:44,423 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2020-10-28 14:34:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:45,150 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-28 14:34:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:34:45,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 69 [2020-10-28 14:34:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:45,152 INFO L225 Difference]: With dead ends: 96 [2020-10-28 14:34:45,153 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 14:34:45,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:34:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 14:34:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 14:34:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 14:34:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2020-10-28 14:34:45,168 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 69 [2020-10-28 14:34:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:45,169 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2020-10-28 14:34:45,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:34:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2020-10-28 14:34:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 14:34:45,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:45,170 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] [2020-10-28 14:34:45,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:34:45,170 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:45,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1158351439, now seen corresponding path program 6 times [2020-10-28 14:34:45,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:45,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044198260] [2020-10-28 14:34:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 14:34:48,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2804 [2020-10-28 14:34:48,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:34:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 14:34:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:48,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:34:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:34:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:48,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:34:48,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:34:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:34:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:48,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:48,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:48,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:48,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:34:48,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:49,167 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-28 14:34:49,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:34:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:49,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:49,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:34:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:34:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:50,025 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-28 14:34:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:34:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:50,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:50,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:34:50,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:50,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:34:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:50,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 14:34:50,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:50,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:50,893 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-10-28 14:34:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 18 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 14:34:51,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044198260] [2020-10-28 14:34:51,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:51,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 14:34:51,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44711899] [2020-10-28 14:34:51,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 14:34:51,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:51,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 14:34:51,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:34:51,157 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand 18 states. [2020-10-28 14:34:52,628 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 111 [2020-10-28 14:34:54,880 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-28 14:34:55,393 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-28 14:34:56,467 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-28 14:34:56,853 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-28 14:34:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:57,705 INFO L93 Difference]: Finished difference Result 130 states and 166 transitions. [2020-10-28 14:34:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 14:34:57,706 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-10-28 14:34:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:57,708 INFO L225 Difference]: With dead ends: 130 [2020-10-28 14:34:57,708 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 14:34:57,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 14:34:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 14:34:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2020-10-28 14:34:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 14:34:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-10-28 14:34:57,724 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 82 [2020-10-28 14:34:57,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:57,724 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-10-28 14:34:57,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 14:34:57,724 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-10-28 14:34:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 14:34:57,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:57,725 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] [2020-10-28 14:34:57,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:34:57,726 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1156504397, now seen corresponding path program 3 times [2020-10-28 14:34:57,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:57,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749706054] [2020-10-28 14:34:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:00,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:00,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 14:35:00,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2756 [2020-10-28 14:35:00,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:00,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:35:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 14:35:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:01,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:01,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:35:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:01,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:01,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:01,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:01,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:01,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:01,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:01,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:01,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:35:01,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:01,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:01,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:35:01,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:01,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:35:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:01,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:01,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:01,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:01,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:35:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:01,500 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-28 14:35:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:35:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:01,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:01,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:01,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:01,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:35:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:01,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,401 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-28 14:35:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:35:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:35:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:02,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:35:02,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:02,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,936 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 14:35:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 20 proven. 69 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 14:35:02,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749706054] [2020-10-28 14:35:02,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:02,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 14:35:02,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967043351] [2020-10-28 14:35:02,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 14:35:02,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:02,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 14:35:03,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:35:03,000 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 18 states. [2020-10-28 14:35:03,988 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 112 [2020-10-28 14:35:05,059 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-28 14:35:05,699 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-28 14:35:06,138 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-28 14:35:07,156 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-28 14:35:07,483 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-28 14:35:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:08,392 INFO L93 Difference]: Finished difference Result 131 states and 165 transitions. [2020-10-28 14:35:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 14:35:08,393 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-10-28 14:35:08,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:08,395 INFO L225 Difference]: With dead ends: 131 [2020-10-28 14:35:08,395 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 14:35:08,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=325, Invalid=1315, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 14:35:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 14:35:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2020-10-28 14:35:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 14:35:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-28 14:35:08,412 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 82 [2020-10-28 14:35:08,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:08,412 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-28 14:35:08,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 14:35:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-28 14:35:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 14:35:08,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:08,413 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] [2020-10-28 14:35:08,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:35:08,414 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:08,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:08,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1271069613, now seen corresponding path program 7 times [2020-10-28 14:35:08,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:08,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341872907] [2020-10-28 14:35:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:15,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:15,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6720 [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 14:35:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:15,740 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-28 14:35:16,103 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-28 14:35:16,448 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-28 14:35:16,600 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-28 14:35:16,938 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2020-10-28 14:35:17,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:17,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:17,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:35:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:17,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:17,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:17,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:35:17,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:17,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:35:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:35:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:17,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:35:17,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:35:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:22,639 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 296 DAG size of output: 216 [2020-10-28 14:35:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:35:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:22,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:22,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:22,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:35:22,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:22,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:22,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:35:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:22,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:22,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:22,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:22,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:35:22,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:22,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:23,476 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-28 14:35:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:35:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:23,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:23,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:23,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:35:23,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:23,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:35:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:23,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:23,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 14:35:23,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:23,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:24,220 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-28 14:35:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 13 proven. 95 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 14:35:24,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341872907] [2020-10-28 14:35:24,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:24,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 14:35:24,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145325698] [2020-10-28 14:35:24,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 14:35:24,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:24,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 14:35:24,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:35:24,308 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 20 states. [2020-10-28 14:35:25,944 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 222 [2020-10-28 14:35:30,075 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 278 DAG size of output: 266 [2020-10-28 14:35:31,978 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-28 14:35:32,626 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-28 14:35:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:35,244 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2020-10-28 14:35:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:35:35,246 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 87 [2020-10-28 14:35:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:35,248 INFO L225 Difference]: With dead ends: 113 [2020-10-28 14:35:35,248 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 14:35:35,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:35:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 14:35:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 14:35:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 14:35:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2020-10-28 14:35:35,265 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 87 [2020-10-28 14:35:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:35,265 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2020-10-28 14:35:35,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 14:35:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2020-10-28 14:35:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 14:35:35,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:35,267 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] [2020-10-28 14:35:35,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:35:35,267 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:35,267 INFO L82 PathProgramCache]: Analyzing trace with hash 108004069, now seen corresponding path program 8 times [2020-10-28 14:35:35,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:35,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176570005] [2020-10-28 14:35:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:38,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3151 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 14:35:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:39,074 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-28 14:35:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:39,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:39,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:39,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:39,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:39,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:39,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:35:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:39,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:39,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:39,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:39,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:39,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:39,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:39,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:35:39,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:39,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:35:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:35:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:39,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:39,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:39,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:39,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:39,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:35:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:39,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:39,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:39,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:35:39,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:39,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:39,779 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 14:35:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:35:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:39,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:35:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:39,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:39,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:35:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:39,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:35:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:40,966 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-28 14:35:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:35:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:40,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:35:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:41,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:41,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:41,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:35:41,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:41,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:41,567 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 14:35:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 14:35:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 14:35:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:41,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:41,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:41,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:41,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:35:41,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:41,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:43,023 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-28 14:35:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 24 proven. 122 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 14:35:43,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176570005] [2020-10-28 14:35:43,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:43,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:35:43,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200316538] [2020-10-28 14:35:43,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:35:43,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:35:43,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:35:43,137 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand 21 states. [2020-10-28 14:35:44,786 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2020-10-28 14:35:47,001 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-28 14:35:47,395 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-28 14:35:48,036 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-28 14:35:48,756 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-10-28 14:35:49,161 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-28 14:35:49,440 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-28 14:35:50,669 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-28 14:35:51,258 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-10-28 14:35:51,523 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-28 14:35:51,806 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-28 14:35:52,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:52,951 INFO L93 Difference]: Finished difference Result 152 states and 194 transitions. [2020-10-28 14:35:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 14:35:52,954 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-10-28 14:35:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:52,956 INFO L225 Difference]: With dead ends: 152 [2020-10-28 14:35:52,956 INFO L226 Difference]: Without dead ends: 148 [2020-10-28 14:35:52,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=500, Invalid=1950, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 14:35:52,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-28 14:35:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 86. [2020-10-28 14:35:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 14:35:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2020-10-28 14:35:52,975 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 100 [2020-10-28 14:35:52,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:52,976 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2020-10-28 14:35:52,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:35:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2020-10-28 14:35:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 14:35:52,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:52,977 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] [2020-10-28 14:35:52,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:35:52,977 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:52,978 INFO L82 PathProgramCache]: Analyzing trace with hash 109851111, now seen corresponding path program 4 times [2020-10-28 14:35:52,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:52,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999568146] [2020-10-28 14:35:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:58,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:58,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 14:35:58,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:58,584 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 14:35:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:58,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:35:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:58,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:58,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:58,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:35:58,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:58,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:58,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:58,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:58,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:35:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:59,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:35:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:35:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:35:59,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:59,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,519 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-28 14:35:59,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:35:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:35:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:35:59,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:00,499 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-28 14:36:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:36:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:36:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:00,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:01,344 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-28 14:36:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 14:36:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:01,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:01,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:01,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:01,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:36:01,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:01,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:01,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 14:36:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:01,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:01,844 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-28 14:36:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 26 proven. 120 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 14:36:01,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999568146] [2020-10-28 14:36:01,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:01,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:36:01,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160762428] [2020-10-28 14:36:01,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:36:01,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:01,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:36:01,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:36:01,950 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 21 states. [2020-10-28 14:36:03,717 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 148 DAG size of output: 106 [2020-10-28 14:36:05,875 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-28 14:36:06,276 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-28 14:36:06,968 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 98 [2020-10-28 14:36:07,604 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2020-10-28 14:36:07,990 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-28 14:36:08,257 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-28 14:36:09,422 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2020-10-28 14:36:09,962 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2020-10-28 14:36:10,224 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-28 14:36:10,475 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-28 14:36:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:11,345 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2020-10-28 14:36:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 14:36:11,346 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-10-28 14:36:11,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:11,349 INFO L225 Difference]: With dead ends: 153 [2020-10-28 14:36:11,349 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 14:36:11,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=507, Invalid=1943, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 14:36:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 14:36:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 86. [2020-10-28 14:36:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 14:36:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2020-10-28 14:36:11,365 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 100 [2020-10-28 14:36:11,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:11,366 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2020-10-28 14:36:11,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:36:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2020-10-28 14:36:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 14:36:11,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:11,367 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] [2020-10-28 14:36:11,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:36:11,367 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2095320825, now seen corresponding path program 9 times [2020-10-28 14:36:11,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:11,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5331188] [2020-10-28 14:36:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:16,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:16,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 14:36:16,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:36:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 14:36:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:16,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 14:36:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 14:36:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:17,007 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-28 14:36:17,188 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-28 14:36:17,396 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-28 14:36:17,561 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-28 14:36:17,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:36:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:17,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:17,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:17,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:17,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:17,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:17,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:36:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:18,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:18,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:18,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:36:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:18,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:18,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:18,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:18,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:18,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:18,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:18,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:18,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:18,608 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-28 14:36:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:36:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:18,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:18,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:18,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:18,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:18,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:18,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:18,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:36:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:19,200 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-28 14:36:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:36:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:36:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:19,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:19,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:19,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:36:19,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:19,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:19,831 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-28 14:36:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 14:36:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:36:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:19,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:19,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 14:36:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:19,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:19,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:19,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:36:19,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:19,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 20 proven. 150 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 14:36:20,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5331188] [2020-10-28 14:36:20,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:20,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:36:20,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402038933] [2020-10-28 14:36:20,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:36:20,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:36:20,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:36:20,278 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand 21 states. [2020-10-28 14:36:22,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:22,616 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2020-10-28 14:36:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:36:22,618 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2020-10-28 14:36:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:22,620 INFO L225 Difference]: With dead ends: 130 [2020-10-28 14:36:22,620 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 14:36:22,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:36:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 14:36:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 14:36:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 14:36:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 120 transitions. [2020-10-28 14:36:22,640 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 120 transitions. Word has length 105 [2020-10-28 14:36:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:22,641 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 120 transitions. [2020-10-28 14:36:22,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:36:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 120 transitions. [2020-10-28 14:36:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 14:36:22,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:22,642 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] [2020-10-28 14:36:22,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:36:22,643 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:22,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1816311857, now seen corresponding path program 10 times [2020-10-28 14:36:22,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:22,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661913385] [2020-10-28 14:36:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 14:36:27,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:28,400 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-28 14:36:28,565 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-28 14:36:28,720 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-28 14:36:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:36:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:29,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:29,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:29,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:29,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:36:29,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:29,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:36:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:29,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:29,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:36:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:29,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:36:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:29,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:29,573 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-28 14:36:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:36:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:29,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:29,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:29,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:29,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:29,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:29,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:36:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:30,109 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-28 14:36:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:36:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:30,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:36:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:30,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:30,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:31,098 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-28 14:36:31,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 14:36:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:31,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:31,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:31,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:31,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 14:36:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:31,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:31,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:31,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:36:31,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:31,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:31,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:31,800 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 14:36:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 14:36:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:31,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:31,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:31,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:36:31,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:31,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:31,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:31,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:31,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 14:36:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 14:36:31,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:31,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:34,234 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 175 DAG size of output: 120 [2020-10-28 14:36:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 30 proven. 187 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 14:36:34,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661913385] [2020-10-28 14:36:34,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:34,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 14:36:34,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420471654] [2020-10-28 14:36:34,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 14:36:34,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:34,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 14:36:34,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:36:34,419 INFO L87 Difference]: Start difference. First operand 93 states and 120 transitions. Second operand 24 states. [2020-10-28 14:36:36,897 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-28 14:36:38,970 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 14:36:39,460 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-28 14:36:40,123 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-28 14:36:40,701 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-28 14:36:41,651 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-10-28 14:36:42,282 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-28 14:36:43,494 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 113 [2020-10-28 14:36:44,519 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2020-10-28 14:36:45,157 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2020-10-28 14:36:45,602 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2020-10-28 14:36:45,988 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-28 14:36:46,364 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-28 14:36:46,623 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-28 14:36:46,902 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-28 14:36:48,193 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 111 [2020-10-28 14:36:49,004 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2020-10-28 14:36:49,441 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2020-10-28 14:36:49,843 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2020-10-28 14:36:50,184 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-10-28 14:36:50,555 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-28 14:36:50,801 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 14:36:51,064 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-28 14:36:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:52,314 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2020-10-28 14:36:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 14:36:52,316 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2020-10-28 14:36:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:52,318 INFO L225 Difference]: With dead ends: 174 [2020-10-28 14:36:52,318 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 14:36:52,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=705, Invalid=2717, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 14:36:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 14:36:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 98. [2020-10-28 14:36:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 14:36:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2020-10-28 14:36:52,338 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 118 [2020-10-28 14:36:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:52,338 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2020-10-28 14:36:52,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 14:36:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2020-10-28 14:36:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 14:36:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:52,339 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] [2020-10-28 14:36:52,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:36:52,340 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:52,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1818158899, now seen corresponding path program 5 times [2020-10-28 14:36:52,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:52,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972143291] [2020-10-28 14:36:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:57,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:57,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 14:36:57,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:36:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 14:36:57,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:57,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 14:36:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 14:36:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:57,997 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-28 14:36:58,200 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-28 14:36:58,398 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-28 14:36:58,540 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-28 14:36:58,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:58,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:36:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:58,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:58,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:58,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:36:58,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:58,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:58,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:58,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:58,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:36:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:58,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:36:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:36:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:58,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:58,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:58,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:58,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:58,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:36:58,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:58,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:59,338 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-28 14:36:59,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:36:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:36:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:59,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:00,387 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-28 14:37:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:37:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:37:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:00,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:00,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:00,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:37:00,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:00,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,742 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 107 [2020-10-28 14:37:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 14:37:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 14:37:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:01,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:02,471 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-28 14:37:02,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 14:37:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:02,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:02,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:02,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:02,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 14:37:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:02,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:03,038 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 14:37:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 32 proven. 185 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 14:37:03,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972143291] [2020-10-28 14:37:03,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:03,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 14:37:03,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594107939] [2020-10-28 14:37:03,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 14:37:03,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:03,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 14:37:03,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:37:03,205 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand 24 states. [2020-10-28 14:37:05,064 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 122 DAG size of output: 121 [2020-10-28 14:37:07,852 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-28 14:37:08,356 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-28 14:37:09,336 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-28 14:37:09,857 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-28 14:37:10,905 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 105 [2020-10-28 14:37:11,750 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 106 [2020-10-28 14:37:12,330 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2020-10-28 14:37:12,738 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2020-10-28 14:37:13,002 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-28 14:37:13,266 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-28 14:37:14,659 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2020-10-28 14:37:15,367 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 104 [2020-10-28 14:37:15,765 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-10-28 14:37:16,189 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-10-28 14:37:16,468 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-28 14:37:16,739 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-28 14:37:17,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:17,784 INFO L93 Difference]: Finished difference Result 175 states and 221 transitions. [2020-10-28 14:37:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 14:37:17,786 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2020-10-28 14:37:17,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:17,788 INFO L225 Difference]: With dead ends: 175 [2020-10-28 14:37:17,788 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 14:37:17,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=651, Invalid=2771, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 14:37:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 14:37:17,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 98. [2020-10-28 14:37:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 14:37:17,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2020-10-28 14:37:17,810 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 118 [2020-10-28 14:37:17,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:17,811 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2020-10-28 14:37:17,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 14:37:17,811 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2020-10-28 14:37:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 14:37:17,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:17,813 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] [2020-10-28 14:37:17,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:37:17,813 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:17,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1227540781, now seen corresponding path program 11 times [2020-10-28 14:37:17,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:17,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720235060] [2020-10-28 14:37:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 14:37:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:23,615 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-28 14:37:23,812 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-28 14:37:24,063 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-28 14:37:24,222 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-28 14:37:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:24,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:24,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:24,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:24,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:24,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:37:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:24,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:37:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:37:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:24,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:24,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:24,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:24,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:37:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:37:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:24,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:25,393 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-28 14:37:25,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:37:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:25,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:25,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:25,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:37:25,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:25,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:37:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:25,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:25,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:37:25,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:25,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:26,068 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-28 14:37:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:37:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:26,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:26,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:26,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:37:26,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:26,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:37:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:26,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:26,782 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-28 14:37:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 14:37:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 14:37:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:26,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:27,453 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-28 14:37:27,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 14:37:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 14:37:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:27,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:27,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:27,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 14:37:27,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:27,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:28,546 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2020-10-28 14:37:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 24 proven. 222 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 14:37:28,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720235060] [2020-10-28 14:37:28,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:28,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 14:37:28,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888979260] [2020-10-28 14:37:28,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 14:37:28,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:28,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 14:37:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:37:28,756 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand 24 states. [2020-10-28 14:37:29,815 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90