/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:42:57,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:42:57,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:42:57,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:42:57,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:42:57,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:42:57,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:42:57,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:42:57,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:42:57,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:42:57,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:42:57,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:42:57,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:42:57,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:42:57,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:42:57,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:42:57,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:42:57,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:42:57,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:42:57,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:42:57,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:42:57,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:42:57,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:42:57,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:42:57,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:42:57,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:42:57,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:42:57,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:42:57,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:42:57,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:42:57,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:42:57,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:42:57,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:42:57,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:42:57,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:42:57,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:42:57,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:42:57,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:42:57,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:42:57,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:42:57,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:42:57,963 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 14:42:57,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:42:57,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:42:57,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:42:57,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:42:57,997 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:42:57,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:42:57,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:42:57,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:42:57,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:42:57,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:42:57,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:42:57,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:42:57,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:42:57,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:42:57,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:42:58,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:42:58,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:42:58,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:42:58,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:42:58,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:42:58,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:42:58,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:42:58,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:42:58,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:42:58,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:42:58,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:42:58,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:42:58,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:42:58,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:42:58,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:42:58,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:42:58,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:42:58,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:42:58,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:42:58,417 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:42:58,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-28 14:42:58,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07bdf8aa4/f2789f41999f4df6bbc8d8ac18b26c18/FLAG8727d6f06 [2020-10-28 14:42:59,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:42:59,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-28 14:42:59,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07bdf8aa4/f2789f41999f4df6bbc8d8ac18b26c18/FLAG8727d6f06 [2020-10-28 14:42:59,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07bdf8aa4/f2789f41999f4df6bbc8d8ac18b26c18 [2020-10-28 14:42:59,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:42:59,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:42:59,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:42:59,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:42:59,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:42:59,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:42:59" (1/1) ... [2020-10-28 14:42:59,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188e9be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:42:59, skipping insertion in model container [2020-10-28 14:42:59,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:42:59" (1/1) ... [2020-10-28 14:42:59,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:42:59,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:42:59,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:42:59,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:43:00,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:43:00,105 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:43:00,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00 WrapperNode [2020-10-28 14:43:00,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:43:00,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:43:00,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:43:00,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:43:00,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (1/1) ... [2020-10-28 14:43:00,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (1/1) ... [2020-10-28 14:43:00,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (1/1) ... [2020-10-28 14:43:00,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (1/1) ... [2020-10-28 14:43:00,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (1/1) ... [2020-10-28 14:43:00,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (1/1) ... [2020-10-28 14:43:00,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (1/1) ... [2020-10-28 14:43:00,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:43:00,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:43:00,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:43:00,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:43:00,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (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 14:43:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:43:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:43:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:43:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:43:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:43:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:43:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-28 14:43:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-28 14:43:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-28 14:43:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-28 14:43:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-28 14:43:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:43:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:43:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:43:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:43:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:43:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:43:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:43:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:43:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:43:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:43:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:43:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:43:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:43:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:43:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:43:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:43:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:43:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:43:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:43:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:43:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:43:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:43:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:43:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:43:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:43:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:43:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:43:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:43:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:43:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:43:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:43:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:43:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:43:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:43:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:43:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:43:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:43:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:43:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:43:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:43:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:43:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:43:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:43:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:43:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:43:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:43:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:43:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:43:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:43:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:43:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:43:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:43:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:43:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:43:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:43:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:43:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:43:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:43:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:43:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:43:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:43:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:43:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:43:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:43:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:43:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:43:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:43:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:43:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:43:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:43:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:43:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:43:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:43:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:43:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:43:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:43:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:43:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:43:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:43:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:43:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:43:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:43:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:43:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:43:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:43:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:43:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:43:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:43:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:43:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:43:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:43:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:43:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:43:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:43:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:43:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:43:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:43:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:43:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:43:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:43:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:43:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:43:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:43:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:43:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:43:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:43:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:43:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:43:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:43:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:43:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:43:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:43:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:43:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-28 14:43:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:43:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:43:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-28 14:43:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:43:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-28 14:43:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:43:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-28 14:43:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-28 14:43:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:43:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:43:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:43:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:43:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:43:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:43:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:43:00,932 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:43:01,171 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:43:01,171 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:43:01,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:43:01 BoogieIcfgContainer [2020-10-28 14:43:01,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:43:01,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:43:01,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:43:01,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:43:01,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:42:59" (1/3) ... [2020-10-28 14:43:01,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0ae4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:43:01, skipping insertion in model container [2020-10-28 14:43:01,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:00" (2/3) ... [2020-10-28 14:43:01,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0ae4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:43:01, skipping insertion in model container [2020-10-28 14:43:01,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:43:01" (3/3) ... [2020-10-28 14:43:01,183 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2020-10-28 14:43:01,196 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:43:01,202 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:43:01,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:43:01,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:43:01,244 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:43:01,245 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:43:01,245 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:43:01,245 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:43:01,245 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:43:01,245 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:43:01,245 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:43:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-28 14:43:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:43:01,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:01,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:01,275 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:01,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2006705534, now seen corresponding path program 1 times [2020-10-28 14:43:01,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:01,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39371349] [2020-10-28 14:43:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:01,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:01,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:01,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:01,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 14:43:01,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:43:01,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-28 14:43:01,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:01,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 14:43:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:43:02,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:02,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:02,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:43:02,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:02,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:02,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:02,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:02,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:43:02,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:02,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:02,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 14:43:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:02,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:02,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:43:02,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:02,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:43:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:02,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:43:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:02,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:02,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:43:02,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:02,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:02,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:02,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:43:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:02,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:43:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:02,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:43:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:02,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:43:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39371349] [2020-10-28 14:43:02,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:43:02,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:43:02,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145508705] [2020-10-28 14:43:02,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:43:02,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:02,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:43:02,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:43:02,248 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2020-10-28 14:43:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:02,656 INFO L93 Difference]: Finished difference Result 139 states and 188 transitions. [2020-10-28 14:43:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:43:02,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-28 14:43:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:02,669 INFO L225 Difference]: With dead ends: 139 [2020-10-28 14:43:02,670 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 14:43:02,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:43:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 14:43:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-10-28 14:43:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:43:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-28 14:43:02,729 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 39 [2020-10-28 14:43:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:02,729 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-28 14:43:02,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:43:02,730 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-28 14:43:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 14:43:02,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:02,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:02,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:43:02,735 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1803513068, now seen corresponding path program 1 times [2020-10-28 14:43:02,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:02,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946866820] [2020-10-28 14:43:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:06,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:06,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 14:43:06,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:43:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3500 [2020-10-28 14:43:06,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:06,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:43:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:43:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:43:06,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:06,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:06,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:06,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:43:06,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:06,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:43:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:06,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:06,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:06,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:06,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:06,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:43:06,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:06,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:43:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:06,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:43:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:06,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:06,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:06,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:43:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:43:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:06,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:06,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:06,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:06,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:06,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:06,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:43:06,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946866820] [2020-10-28 14:43:06,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:06,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:43:06,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493429091] [2020-10-28 14:43:06,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:43:06,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:06,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:43:06,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:43:06,580 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 7 states. [2020-10-28 14:43:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:07,402 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2020-10-28 14:43:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:43:07,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-28 14:43:07,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:07,405 INFO L225 Difference]: With dead ends: 121 [2020-10-28 14:43:07,406 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 14:43:07,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:43:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 14:43:07,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2020-10-28 14:43:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:43:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-28 14:43:07,424 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 44 [2020-10-28 14:43:07,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:07,425 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-28 14:43:07,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:43:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-28 14:43:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 14:43:07,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:07,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:07,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:43:07,430 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:07,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:07,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1409146282, now seen corresponding path program 1 times [2020-10-28 14:43:07,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:07,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904984445] [2020-10-28 14:43:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:08,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:08,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 14:43:08,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-28 14:43:08,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:08,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:43:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:43:08,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:08,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:08,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:08,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:08,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:08,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:08,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:08,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:08,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:08,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:08,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:08,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:43:08,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:08,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:43:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:08,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:08,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:08,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:08,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:43:08,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:08,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:43:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:43:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:08,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:08,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:08,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:43:08,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:08,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:43:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:09,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:09,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:09,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:09,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:09,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:43:09,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904984445] [2020-10-28 14:43:09,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:09,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:43:09,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764311594] [2020-10-28 14:43:09,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:43:09,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:09,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:43:09,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:43:09,074 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 11 states. [2020-10-28 14:43:09,526 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-28 14:43:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:10,440 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2020-10-28 14:43:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:43:10,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-28 14:43:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:10,447 INFO L225 Difference]: With dead ends: 132 [2020-10-28 14:43:10,447 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 14:43:10,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:43:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 14:43:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2020-10-28 14:43:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 14:43:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-10-28 14:43:10,464 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 44 [2020-10-28 14:43:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:10,465 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-10-28 14:43:10,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:43:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-10-28 14:43:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 14:43:10,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:10,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:10,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:43:10,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:10,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:10,468 INFO L82 PathProgramCache]: Analyzing trace with hash 279797460, now seen corresponding path program 1 times [2020-10-28 14:43:10,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:10,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428048967] [2020-10-28 14:43:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:10,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:11,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:11,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 14:43:11,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:11,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-28 14:43:11,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:11,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:43:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:43:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:11,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:11,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:11,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:11,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:11,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:11,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:11,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:11,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:11,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:43:11,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:11,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:43:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:11,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:11,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:11,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:43:11,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:11,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:43:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:43:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:11,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:11,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:11,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:43:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:11,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:43:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:43:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:11,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:11,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:11,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:11,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:11,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:43:11,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428048967] [2020-10-28 14:43:11,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:11,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:43:11,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839036385] [2020-10-28 14:43:11,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:43:11,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:11,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:43:11,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:43:11,433 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 11 states. [2020-10-28 14:43:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:12,528 INFO L93 Difference]: Finished difference Result 138 states and 178 transitions. [2020-10-28 14:43:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:43:12,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-28 14:43:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:12,532 INFO L225 Difference]: With dead ends: 138 [2020-10-28 14:43:12,532 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 14:43:12,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:43:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 14:43:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2020-10-28 14:43:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 14:43:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-28 14:43:12,565 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 44 [2020-10-28 14:43:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:12,565 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-28 14:43:12,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:43:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-28 14:43:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:43:12,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:12,570 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:12,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:43:12,572 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash 984589588, now seen corresponding path program 1 times [2020-10-28 14:43:12,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:12,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120932928] [2020-10-28 14:43:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:12,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:14,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:16,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 14:43:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 14:43:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4100 [2020-10-28 14:43:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:16,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:16,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:16,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:16,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:16,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:16,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:16,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:43:16,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:16,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:43:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:43:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:16,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:16,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:43:16,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:16,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:43:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:43:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:16,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:16,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:16,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:16,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:16,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:16,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:43:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:16,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:16,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 14:43:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:16,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:16,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:16,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:16,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:43:16,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120932928] [2020-10-28 14:43:16,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:16,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:43:16,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713833658] [2020-10-28 14:43:16,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:43:16,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:16,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:43:16,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:43:16,943 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 8 states. [2020-10-28 14:43:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:17,939 INFO L93 Difference]: Finished difference Result 164 states and 216 transitions. [2020-10-28 14:43:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:43:17,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-28 14:43:17,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:17,946 INFO L225 Difference]: With dead ends: 164 [2020-10-28 14:43:17,946 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 14:43:17,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:43:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 14:43:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-28 14:43:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 14:43:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2020-10-28 14:43:17,993 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 47 [2020-10-28 14:43:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:17,993 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2020-10-28 14:43:17,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:43:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2020-10-28 14:43:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:43:18,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:18,001 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:18,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:43:18,002 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1378956374, now seen corresponding path program 2 times [2020-10-28 14:43:18,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:18,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400049827] [2020-10-28 14:43:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:19,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 14:43:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-28 14:43:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:19,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:43:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:43:19,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:19,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:19,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:19,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:19,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:19,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:19,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:43:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:19,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:43:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:43:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:19,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:19,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:43:19,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:19,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:43:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:19,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:43:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:19,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:19,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:19,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:43:19,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:19,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:19,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 14:43:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:19,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:19,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:19,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:19,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:19,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:19,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:43:19,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400049827] [2020-10-28 14:43:19,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:19,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:43:19,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144841091] [2020-10-28 14:43:19,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:43:19,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:43:19,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:43:19,591 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand 12 states. [2020-10-28 14:43:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:20,963 INFO L93 Difference]: Finished difference Result 152 states and 198 transitions. [2020-10-28 14:43:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:43:20,964 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-28 14:43:20,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:20,967 INFO L225 Difference]: With dead ends: 152 [2020-10-28 14:43:20,968 INFO L226 Difference]: Without dead ends: 97 [2020-10-28 14:43:20,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:43:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-28 14:43:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2020-10-28 14:43:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 14:43:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-28 14:43:20,985 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 47 [2020-10-28 14:43:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:20,985 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-28 14:43:20,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:43:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-28 14:43:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:43:20,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:20,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:20,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:43:20,987 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1227067180, now seen corresponding path program 1 times [2020-10-28 14:43:20,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:20,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774507272] [2020-10-28 14:43:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:21,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:21,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 14:43:21,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-28 14:43:21,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:21,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:21,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:43:21,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:21,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:43:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:21,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:21,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:21,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:21,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:21,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:43:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:21,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:43:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:21,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:43:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:21,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:21,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:21,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:43:21,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:21,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:43:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:43:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:43:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:22,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:22,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:22,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:43:22,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:22,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:43:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 14:43:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:22,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:22,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:22,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:43:22,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:22,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:43:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:43:22,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774507272] [2020-10-28 14:43:22,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:22,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:43:22,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438453702] [2020-10-28 14:43:22,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:43:22,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:22,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:43:22,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:43:22,048 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 12 states. [2020-10-28 14:43:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:23,287 INFO L93 Difference]: Finished difference Result 154 states and 201 transitions. [2020-10-28 14:43:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:43:23,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-28 14:43:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:23,290 INFO L225 Difference]: With dead ends: 154 [2020-10-28 14:43:23,290 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 14:43:23,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:43:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 14:43:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2020-10-28 14:43:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 14:43:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-10-28 14:43:23,304 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 47 [2020-10-28 14:43:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:23,304 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-10-28 14:43:23,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:43:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-10-28 14:43:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 14:43:23,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:23,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:23,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:43:23,306 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:23,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1388694395, now seen corresponding path program 1 times [2020-10-28 14:43:23,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:23,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204814563] [2020-10-28 14:43:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:23,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:28,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:28,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 14:43:28,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:43:28,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:43:28,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:28,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:43:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:43:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:43:28,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:28,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:28,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:28,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:28,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:43:28,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:28,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:43:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:28,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:28,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:28,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:43:28,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:28,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:28,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:43:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:28,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:28,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:28,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:43:28,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:28,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:43:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:28,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:43:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:28,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:28,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:28,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:28,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:43:28,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:28,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:43:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:28,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:28,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:43:28,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:28,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:43:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:43:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:43:28,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204814563] [2020-10-28 14:43:28,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:43:28,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 14:43:28,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668033613] [2020-10-28 14:43:28,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:43:28,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:28,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:43:28,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:43:28,680 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 12 states. [2020-10-28 14:43:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:29,573 INFO L93 Difference]: Finished difference Result 93 states and 116 transitions. [2020-10-28 14:43:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:43:29,573 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-28 14:43:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:29,575 INFO L225 Difference]: With dead ends: 93 [2020-10-28 14:43:29,576 INFO L226 Difference]: Without dead ends: 87 [2020-10-28 14:43:29,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:43:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-28 14:43:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2020-10-28 14:43:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 14:43:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-10-28 14:43:29,602 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 48 [2020-10-28 14:43:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:29,605 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-10-28 14:43:29,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:43:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-10-28 14:43:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:43:29,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:29,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:29,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:43:29,607 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:29,608 INFO L82 PathProgramCache]: Analyzing trace with hash 717199052, now seen corresponding path program 1 times [2020-10-28 14:43:29,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:29,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237076938] [2020-10-28 14:43:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:43:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2395 [2020-10-28 14:43:32,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:43:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:43:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:32,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:32,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:32,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:43:32,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:43:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:32,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:43:32,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:32,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:32,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:43:32,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:32,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:43:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:32,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:32,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:32,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:43:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:43:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:32,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:32,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:43:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:43:32,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237076938] [2020-10-28 14:43:32,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:32,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:43:32,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030897894] [2020-10-28 14:43:32,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:43:32,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:32,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:43:32,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:43:32,357 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 12 states. [2020-10-28 14:43:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:33,554 INFO L93 Difference]: Finished difference Result 193 states and 259 transitions. [2020-10-28 14:43:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:43:33,556 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-28 14:43:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:33,558 INFO L225 Difference]: With dead ends: 193 [2020-10-28 14:43:33,558 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 14:43:33,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:43:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 14:43:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2020-10-28 14:43:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 14:43:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2020-10-28 14:43:33,589 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 49 [2020-10-28 14:43:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:33,589 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2020-10-28 14:43:33,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:43:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2020-10-28 14:43:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:43:33,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:33,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:33,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:43:33,591 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:33,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1054096180, now seen corresponding path program 1 times [2020-10-28 14:43:33,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:33,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372143036] [2020-10-28 14:43:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:36,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:43:36,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2890 [2020-10-28 14:43:36,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:36,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:43:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:43:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:36,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:36,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:36,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:36,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:36,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:36,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:36,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:36,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:43:36,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:36,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:43:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:43:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:36,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:36,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:36,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:43:36,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:36,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:36,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:43:36,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:36,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:43:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:43:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:36,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:36,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:36,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:36,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:36,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:43:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:43:36,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372143036] [2020-10-28 14:43:36,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:36,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:43:36,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882365856] [2020-10-28 14:43:36,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:43:36,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:36,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:43:36,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:43:36,911 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand 13 states. [2020-10-28 14:43:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:38,235 INFO L93 Difference]: Finished difference Result 181 states and 238 transitions. [2020-10-28 14:43:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:43:38,236 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-28 14:43:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:38,240 INFO L225 Difference]: With dead ends: 181 [2020-10-28 14:43:38,240 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 14:43:38,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:43:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 14:43:38,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2020-10-28 14:43:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 14:43:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2020-10-28 14:43:38,272 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 52 [2020-10-28 14:43:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:38,273 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2020-10-28 14:43:38,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:43:38,273 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2020-10-28 14:43:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:43:38,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:38,274 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:38,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:43:38,277 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:38,279 INFO L82 PathProgramCache]: Analyzing trace with hash -536610171, now seen corresponding path program 2 times [2020-10-28 14:43:38,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:38,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404240227] [2020-10-28 14:43:38,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:38,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:38,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:43:38,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:38,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-28 14:43:38,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:38,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:43:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:43:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 14:43:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:38,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:38,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:38,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:38,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:38,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:38,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:38,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:38,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:43:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:38,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:38,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:38,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:43:39,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:43:39,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:43:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:39,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:43:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:39,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:43:39,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:43:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:43:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:43:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:43:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:43:39,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404240227] [2020-10-28 14:43:39,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:39,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:43:39,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516976273] [2020-10-28 14:43:39,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:43:39,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:39,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:43:39,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:43:39,276 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand 14 states. [2020-10-28 14:43:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:40,582 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2020-10-28 14:43:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:43:40,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-28 14:43:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:40,584 INFO L225 Difference]: With dead ends: 107 [2020-10-28 14:43:40,585 INFO L226 Difference]: Without dead ends: 101 [2020-10-28 14:43:40,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:43:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-28 14:43:40,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2020-10-28 14:43:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 14:43:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2020-10-28 14:43:40,595 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 53 [2020-10-28 14:43:40,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:40,596 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2020-10-28 14:43:40,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:43:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2020-10-28 14:43:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:43:40,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:40,597 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:40,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:43:40,597 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:40,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1162299650, now seen corresponding path program 3 times [2020-10-28 14:43:40,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:40,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104564526] [2020-10-28 14:43:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:40,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:43:45,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:45,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4762 [2020-10-28 14:43:45,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:43:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:43:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:43:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:45,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:45,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:45,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:43:45,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:43:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:43:45,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:45,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:43:45,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:43:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:43:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:45,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:43:45,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:43:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:43:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:45,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:45,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:43:45,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:43:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 14:43:45,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104564526] [2020-10-28 14:43:45,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:45,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:43:45,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858241178] [2020-10-28 14:43:45,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:43:45,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:45,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:43:45,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:43:45,931 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 15 states. [2020-10-28 14:43:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:47,612 INFO L93 Difference]: Finished difference Result 142 states and 199 transitions. [2020-10-28 14:43:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:43:47,614 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-28 14:43:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:47,615 INFO L225 Difference]: With dead ends: 142 [2020-10-28 14:43:47,615 INFO L226 Difference]: Without dead ends: 136 [2020-10-28 14:43:47,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:43:47,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-28 14:43:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 112. [2020-10-28 14:43:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 14:43:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 151 transitions. [2020-10-28 14:43:47,634 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 151 transitions. Word has length 54 [2020-10-28 14:43:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:47,634 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 151 transitions. [2020-10-28 14:43:47,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:43:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 151 transitions. [2020-10-28 14:43:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 14:43:47,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:47,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:47,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:43:47,636 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:47,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:47,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2006070747, now seen corresponding path program 4 times [2020-10-28 14:43:47,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:47,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814114711] [2020-10-28 14:43:47,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:43:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-28 14:43:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:43:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:43:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 14:43:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:48,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:43:48,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:48,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:48,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:43:48,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:43:48,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:43:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:43:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:49,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:49,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:49,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:43:49,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:49,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:49,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:49,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:49,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:43:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:43:49,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:43:49,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:49,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:43:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:43:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:43:49,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814114711] [2020-10-28 14:43:49,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:49,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:43:49,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399742137] [2020-10-28 14:43:49,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:43:49,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:49,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:43:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:43:49,649 INFO L87 Difference]: Start difference. First operand 112 states and 151 transitions. Second operand 16 states. [2020-10-28 14:43:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:51,765 INFO L93 Difference]: Finished difference Result 155 states and 223 transitions. [2020-10-28 14:43:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:43:51,767 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-28 14:43:51,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:51,769 INFO L225 Difference]: With dead ends: 155 [2020-10-28 14:43:51,769 INFO L226 Difference]: Without dead ends: 149 [2020-10-28 14:43:51,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:43:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-28 14:43:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 135. [2020-10-28 14:43:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 14:43:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 191 transitions. [2020-10-28 14:43:51,809 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 191 transitions. Word has length 55 [2020-10-28 14:43:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:51,811 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 191 transitions. [2020-10-28 14:43:51,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:43:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 191 transitions. [2020-10-28 14:43:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:43:51,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:51,813 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:51,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:43:51,814 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1441305246, now seen corresponding path program 5 times [2020-10-28 14:43:51,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:51,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89964493] [2020-10-28 14:43:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:51,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:52,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:52,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:43:52,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-28 14:43:52,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:52,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:43:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:43:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 14:43:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:53,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:53,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:53,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:53,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:53,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:53,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:53,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:53,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:43:53,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:53,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:53,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:53,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:53,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:43:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:43:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:43:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:53,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:43:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:53,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:43:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:53,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:43:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:53,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:53,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:43:53,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:43:53,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:53,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:43:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:43:53,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:43:53,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89964493] [2020-10-28 14:43:53,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:53,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:43:53,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719746924] [2020-10-28 14:43:53,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:43:53,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:43:53,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:43:53,924 INFO L87 Difference]: Start difference. First operand 135 states and 191 transitions. Second operand 17 states. [2020-10-28 14:43:56,002 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-28 14:43:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:56,719 INFO L93 Difference]: Finished difference Result 159 states and 231 transitions. [2020-10-28 14:43:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:43:56,720 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-28 14:43:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:56,722 INFO L225 Difference]: With dead ends: 159 [2020-10-28 14:43:56,722 INFO L226 Difference]: Without dead ends: 153 [2020-10-28 14:43:56,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:43:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-28 14:43:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 136. [2020-10-28 14:43:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 14:43:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 193 transitions. [2020-10-28 14:43:56,741 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 193 transitions. Word has length 56 [2020-10-28 14:43:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:56,742 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 193 transitions. [2020-10-28 14:43:56,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:43:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 193 transitions. [2020-10-28 14:43:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:43:56,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:56,744 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:56,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:43:56,744 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:56,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1113443899, now seen corresponding path program 6 times [2020-10-28 14:43:56,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:56,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309565986] [2020-10-28 14:43:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:43:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 14:43:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:57,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:57,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:57,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:57,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:57,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:57,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:43:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:57,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:57,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:57,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:57,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:57,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:57,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:43:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:57,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:57,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:43:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:43:57,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:57,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:43:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:43:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:43:58,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:43:58,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:58,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:43:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:43:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:58,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:58,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:43:58,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:58,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:43:58,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:58,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:43:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:43:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:43:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:43:58,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309565986] [2020-10-28 14:43:58,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:58,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 14:43:58,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051105634] [2020-10-28 14:43:58,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 14:43:58,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:58,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 14:43:58,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:43:58,879 INFO L87 Difference]: Start difference. First operand 136 states and 193 transitions. Second operand 18 states. [2020-10-28 14:44:01,272 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-28 14:44:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:02,034 INFO L93 Difference]: Finished difference Result 163 states and 239 transitions. [2020-10-28 14:44:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:44:02,041 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-28 14:44:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:02,043 INFO L225 Difference]: With dead ends: 163 [2020-10-28 14:44:02,043 INFO L226 Difference]: Without dead ends: 157 [2020-10-28 14:44:02,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:44:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-28 14:44:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 137. [2020-10-28 14:44:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-28 14:44:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 195 transitions. [2020-10-28 14:44:02,068 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 195 transitions. Word has length 57 [2020-10-28 14:44:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:02,068 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 195 transitions. [2020-10-28 14:44:02,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 14:44:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 195 transitions. [2020-10-28 14:44:02,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:44:02,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:02,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:02,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:44:02,071 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:02,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1360320102, now seen corresponding path program 1 times [2020-10-28 14:44:02,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:02,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591016363] [2020-10-28 14:44:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:04,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:44:04,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:44:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2667 [2020-10-28 14:44:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:04,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 14:44:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:44:04,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:04,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:04,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:44:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:04,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:04,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:04,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:44:04,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:04,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:44:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:04,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:44:04,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:04,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 14:44:04,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:04,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:04,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:44:04,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:04,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:44:04,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 14:44:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:05,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:05,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:05,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:05,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:05,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:44:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 14:44:05,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591016363] [2020-10-28 14:44:05,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:05,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:44:05,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509488308] [2020-10-28 14:44:05,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:44:05,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:05,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:44:05,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:44:05,091 INFO L87 Difference]: Start difference. First operand 137 states and 195 transitions. Second operand 12 states. [2020-10-28 14:44:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:06,053 INFO L93 Difference]: Finished difference Result 175 states and 244 transitions. [2020-10-28 14:44:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:44:06,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-28 14:44:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:06,056 INFO L225 Difference]: With dead ends: 175 [2020-10-28 14:44:06,056 INFO L226 Difference]: Without dead ends: 145 [2020-10-28 14:44:06,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:44:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-28 14:44:06,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2020-10-28 14:44:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 14:44:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 197 transitions. [2020-10-28 14:44:06,076 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 197 transitions. Word has length 57 [2020-10-28 14:44:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:06,076 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 197 transitions. [2020-10-28 14:44:06,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:44:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 197 transitions. [2020-10-28 14:44:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:44:06,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:06,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:06,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:44:06,078 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1363663618, now seen corresponding path program 2 times [2020-10-28 14:44:06,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:06,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411556611] [2020-10-28 14:44:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:07,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 14:44:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 14:44:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:07,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:07,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:44:07,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:07,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:44:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:08,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:44:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:44:08,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:08,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:08,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:44:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:08,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:08,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:08,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:08,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 14:44:08,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:08,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:44:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:08,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:44:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:08,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:08,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:08,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:08,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:44:08,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:08,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 14:44:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:08,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:08,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:44:08,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:08,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:44:08,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411556611] [2020-10-28 14:44:08,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:08,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 14:44:08,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562391099] [2020-10-28 14:44:08,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 14:44:08,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:08,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 14:44:08,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:44:08,751 INFO L87 Difference]: Start difference. First operand 139 states and 197 transitions. Second operand 20 states. [2020-10-28 14:44:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:10,820 INFO L93 Difference]: Finished difference Result 181 states and 276 transitions. [2020-10-28 14:44:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:44:10,822 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-28 14:44:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:10,824 INFO L225 Difference]: With dead ends: 181 [2020-10-28 14:44:10,824 INFO L226 Difference]: Without dead ends: 175 [2020-10-28 14:44:10,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:44:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-28 14:44:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 133. [2020-10-28 14:44:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 14:44:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 185 transitions. [2020-10-28 14:44:10,852 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 185 transitions. Word has length 57 [2020-10-28 14:44:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:10,852 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 185 transitions. [2020-10-28 14:44:10,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 14:44:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 185 transitions. [2020-10-28 14:44:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:44:10,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:10,854 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:10,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:44:10,854 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:10,855 INFO L82 PathProgramCache]: Analyzing trace with hash 460323266, now seen corresponding path program 7 times [2020-10-28 14:44:10,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:10,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921231997] [2020-10-28 14:44:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:44:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-28 14:44:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:44:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:44:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 14:44:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:11,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:11,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:11,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:11,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:11,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:44:11,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:44:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:44:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:12,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:12,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:44:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:12,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:44:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:44:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:12,590 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-28 14:44:12,762 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-28 14:44:12,937 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-28 14:44:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:44:13,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921231997] [2020-10-28 14:44:13,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:13,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 14:44:13,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555213600] [2020-10-28 14:44:13,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:44:13,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:13,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:44:13,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:44:13,127 INFO L87 Difference]: Start difference. First operand 133 states and 185 transitions. Second operand 19 states. [2020-10-28 14:44:15,059 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-28 14:44:15,293 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 14:44:15,523 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 14:44:16,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:16,580 INFO L93 Difference]: Finished difference Result 165 states and 238 transitions. [2020-10-28 14:44:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:44:16,581 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-28 14:44:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:16,583 INFO L225 Difference]: With dead ends: 165 [2020-10-28 14:44:16,583 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 14:44:16,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:44:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 14:44:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 134. [2020-10-28 14:44:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 14:44:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 187 transitions. [2020-10-28 14:44:16,601 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 187 transitions. Word has length 58 [2020-10-28 14:44:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:16,602 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 187 transitions. [2020-10-28 14:44:16,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:44:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 187 transitions. [2020-10-28 14:44:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 14:44:16,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:16,603 INFO L422 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:16,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:44:16,604 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:16,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2002465125, now seen corresponding path program 8 times [2020-10-28 14:44:16,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:16,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722131551] [2020-10-28 14:44:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:17,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:44:17,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-28 14:44:17,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:17,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:44:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:44:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 14:44:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:17,361 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 14:44:17,593 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 14:44:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:17,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:17,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:17,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:17,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:17,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:17,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:17,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:17,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:17,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:17,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:17,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:17,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:17,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:44:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:17,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:17,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:44:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:17,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:17,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:17,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:44:17,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:17,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:18,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:18,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:18,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:18,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:18,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:44:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:18,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:18,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:44:18,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 14:44:18,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:18,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:44:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:44:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:18,538 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-28 14:44:18,740 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-28 14:44:18,953 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-28 14:44:19,183 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-28 14:44:19,378 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-28 14:44:19,571 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-28 14:44:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:44:19,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722131551] [2020-10-28 14:44:19,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:19,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 14:44:19,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827037348] [2020-10-28 14:44:19,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 14:44:19,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:19,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 14:44:19,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:44:19,603 INFO L87 Difference]: Start difference. First operand 134 states and 187 transitions. Second operand 20 states. [2020-10-28 14:44:20,479 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-28 14:44:21,723 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 14:44:22,002 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 14:44:22,311 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 14:44:22,627 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:44:22,905 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-28 14:44:23,370 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-28 14:44:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:24,477 INFO L93 Difference]: Finished difference Result 169 states and 246 transitions. [2020-10-28 14:44:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:44:24,478 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2020-10-28 14:44:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:24,480 INFO L225 Difference]: With dead ends: 169 [2020-10-28 14:44:24,481 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 14:44:24,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:44:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 14:44:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2020-10-28 14:44:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 14:44:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 189 transitions. [2020-10-28 14:44:24,508 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 189 transitions. Word has length 59 [2020-10-28 14:44:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:24,508 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 189 transitions. [2020-10-28 14:44:24,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 14:44:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 189 transitions. [2020-10-28 14:44:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 14:44:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:24,510 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:24,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:44:24,511 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:24,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2113715998, now seen corresponding path program 9 times [2020-10-28 14:44:24,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:24,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586455871] [2020-10-28 14:44:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:44:25,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-28 14:44:25,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:44:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:44:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:44:25,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:25,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:44:25,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:44:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:44:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 14:44:25,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:44:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:26,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:26,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:26,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:26,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:26,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:26,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:44:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 14:44:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:26,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:26,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:44:26,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:44:26,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:26,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 14:44:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:44:26,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586455871] [2020-10-28 14:44:26,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:26,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:44:26,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116573473] [2020-10-28 14:44:26,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:44:26,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:26,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:44:26,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:44:26,157 INFO L87 Difference]: Start difference. First operand 135 states and 189 transitions. Second operand 13 states. [2020-10-28 14:44:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:27,578 INFO L93 Difference]: Finished difference Result 249 states and 362 transitions. [2020-10-28 14:44:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:44:27,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-28 14:44:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:27,592 INFO L225 Difference]: With dead ends: 249 [2020-10-28 14:44:27,592 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 14:44:27,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:44:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 14:44:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-10-28 14:44:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-28 14:44:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 176 transitions. [2020-10-28 14:44:27,614 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 176 transitions. Word has length 59 [2020-10-28 14:44:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:27,615 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 176 transitions. [2020-10-28 14:44:27,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:44:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 176 transitions. [2020-10-28 14:44:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 14:44:27,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:27,616 INFO L422 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:27,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 14:44:27,617 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:27,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1730744798, now seen corresponding path program 10 times [2020-10-28 14:44:27,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:27,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483203944] [2020-10-28 14:44:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:44:28,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-28 14:44:28,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:44:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:44:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 14:44:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:28,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:28,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:28,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:44:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:44:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:44:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:28,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:28,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:44:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:44:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:44:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:29,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:44:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:29,410 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-28 14:44:29,950 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-28 14:44:30,167 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-28 14:44:30,383 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-28 14:44:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:44:30,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483203944] [2020-10-28 14:44:30,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:30,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:44:30,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015705732] [2020-10-28 14:44:30,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:44:30,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:30,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:44:30,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:44:30,608 INFO L87 Difference]: Start difference. First operand 129 states and 176 transitions. Second operand 21 states. [2020-10-28 14:44:31,628 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 14:44:33,690 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 14:44:33,999 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 14:44:34,299 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 14:44:34,723 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-28 14:44:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:35,990 INFO L93 Difference]: Finished difference Result 167 states and 236 transitions. [2020-10-28 14:44:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:44:35,991 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 60 [2020-10-28 14:44:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:35,993 INFO L225 Difference]: With dead ends: 167 [2020-10-28 14:44:35,993 INFO L226 Difference]: Without dead ends: 161 [2020-10-28 14:44:35,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 14:44:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-28 14:44:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 130. [2020-10-28 14:44:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 14:44:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 178 transitions. [2020-10-28 14:44:36,013 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 178 transitions. Word has length 60 [2020-10-28 14:44:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:36,013 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 178 transitions. [2020-10-28 14:44:36,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:44:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 178 transitions. [2020-10-28 14:44:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 14:44:36,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:36,015 INFO L422 BasicCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:36,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 14:44:36,015 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:36,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1496135419, now seen corresponding path program 11 times [2020-10-28 14:44:36,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:36,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684586693] [2020-10-28 14:44:36,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:36,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:44:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-28 14:44:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:36,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:44:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:44:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 14:44:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,094 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-28 14:44:37,230 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-28 14:44:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:37,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:37,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:44:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:37,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 14:44:37,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,611 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-28 14:44:37,763 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-28 14:44:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:44:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:37,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:44:37,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:44:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:37,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 14:44:37,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:44:37,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:37,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:44:37,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:44:38,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684586693] [2020-10-28 14:44:38,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:38,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 14:44:38,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576749497] [2020-10-28 14:44:38,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 14:44:38,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:38,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 14:44:38,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:44:38,936 INFO L87 Difference]: Start difference. First operand 130 states and 178 transitions. Second operand 22 states. [2020-10-28 14:44:42,532 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-28 14:44:42,817 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 14:44:43,193 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-28 14:44:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:44,521 INFO L93 Difference]: Finished difference Result 171 states and 243 transitions. [2020-10-28 14:44:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:44:44,530 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 61 [2020-10-28 14:44:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:44,531 INFO L225 Difference]: With dead ends: 171 [2020-10-28 14:44:44,531 INFO L226 Difference]: Without dead ends: 165 [2020-10-28 14:44:44,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 14:44:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-28 14:44:44,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-10-28 14:44:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 14:44:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 180 transitions. [2020-10-28 14:44:44,553 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 180 transitions. Word has length 61 [2020-10-28 14:44:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:44,553 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 180 transitions. [2020-10-28 14:44:44,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 14:44:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 180 transitions. [2020-10-28 14:44:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 14:44:44,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:44,555 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:44,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 14:44:44,555 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:44,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2069947113, now seen corresponding path program 3 times [2020-10-28 14:44:44,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:44,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211076467] [2020-10-28 14:44:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:45,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:44:45,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-28 14:44:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:45,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:44:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 14:44:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 14:44:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:45,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:45,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:45,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:45,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:45,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:45,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:44:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:45,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:45,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:44:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:45,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:45,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:44:45,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:44:45,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:45,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:44:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:44:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:45,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:45,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:45,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:45,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:45,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:44:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:45,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:45,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:44:45,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211076467] [2020-10-28 14:44:45,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:45,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:44:45,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159856091] [2020-10-28 14:44:45,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:44:45,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:45,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:44:45,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:44:45,960 INFO L87 Difference]: Start difference. First operand 131 states and 180 transitions. Second operand 16 states. [2020-10-28 14:44:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:48,083 INFO L93 Difference]: Finished difference Result 150 states and 204 transitions. [2020-10-28 14:44:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:44:48,084 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-28 14:44:48,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:48,086 INFO L225 Difference]: With dead ends: 150 [2020-10-28 14:44:48,087 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 14:44:48,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:44:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 14:44:48,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2020-10-28 14:44:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 14:44:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2020-10-28 14:44:48,105 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 61 [2020-10-28 14:44:48,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:48,105 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2020-10-28 14:44:48,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:44:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2020-10-28 14:44:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 14:44:48,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:48,106 INFO L422 BasicCegarLoop]: trace histogram [10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:48,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 14:44:48,107 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:48,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1481788034, now seen corresponding path program 12 times [2020-10-28 14:44:48,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:48,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376120742] [2020-10-28 14:44:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 14:44:48,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-28 14:44:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:44:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:44:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 14:44:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:49,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:49,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:49,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:49,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:49,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:44:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:49,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:49,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:49,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:44:49,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:49,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:49,542 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-28 14:44:49,690 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-28 14:44:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:44:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:49,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:49,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:49,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:44:49,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:49,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:49,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:44:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:44:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:44:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:44:50,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376120742] [2020-10-28 14:44:50,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:50,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:44:50,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244858253] [2020-10-28 14:44:50,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:44:50,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:50,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:44:51,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:44:51,000 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand 23 states. [2020-10-28 14:44:54,415 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 14:44:54,693 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 14:44:55,004 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 14:44:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:56,585 INFO L93 Difference]: Finished difference Result 175 states and 249 transitions. [2020-10-28 14:44:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:44:56,586 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2020-10-28 14:44:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:56,587 INFO L225 Difference]: With dead ends: 175 [2020-10-28 14:44:56,587 INFO L226 Difference]: Without dead ends: 169 [2020-10-28 14:44:56,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 14:44:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-28 14:44:56,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2020-10-28 14:44:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-28 14:44:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2020-10-28 14:44:56,608 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 62 [2020-10-28 14:44:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:56,609 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2020-10-28 14:44:56,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:44:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2020-10-28 14:44:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 14:44:56,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:56,610 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:56,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 14:44:56,611 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:56,611 INFO L82 PathProgramCache]: Analyzing trace with hash 361196830, now seen corresponding path program 4 times [2020-10-28 14:44:56,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:56,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337974117] [2020-10-28 14:44:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:59,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:59,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 14:44:59,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2544 [2020-10-28 14:44:59,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:59,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:44:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:44:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 14:44:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:59,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:44:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:59,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:59,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:44:59,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:59,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:44:59,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:59,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:44:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:44:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:59,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:59,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:44:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:44:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:59,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:59,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:59,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:59,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:44:59,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:59,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:44:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:59,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:59,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:59,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 14:44:59,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337974117] [2020-10-28 14:44:59,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:59,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 14:44:59,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307452131] [2020-10-28 14:44:59,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:44:59,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:59,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:44:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:44:59,913 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand 19 states. [2020-10-28 14:45:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:45:02,767 INFO L93 Difference]: Finished difference Result 212 states and 345 transitions. [2020-10-28 14:45:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:45:02,768 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-28 14:45:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:45:02,771 INFO L225 Difference]: With dead ends: 212 [2020-10-28 14:45:02,771 INFO L226 Difference]: Without dead ends: 206 [2020-10-28 14:45:02,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:45:02,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-28 14:45:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165. [2020-10-28 14:45:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 14:45:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 256 transitions. [2020-10-28 14:45:02,800 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 256 transitions. Word has length 62 [2020-10-28 14:45:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:45:02,801 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 256 transitions. [2020-10-28 14:45:02,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:45:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 256 transitions. [2020-10-28 14:45:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 14:45:02,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:02,803 INFO L422 BasicCegarLoop]: trace histogram [11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:45:02,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 14:45:02,803 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:02,804 INFO L82 PathProgramCache]: Analyzing trace with hash -691865435, now seen corresponding path program 13 times [2020-10-28 14:45:02,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:02,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725762476] [2020-10-28 14:45:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 14:45:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:03,970 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-28 14:45:04,130 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-28 14:45:04,302 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-28 14:45:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:45:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:04,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:04,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:45:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:45:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:04,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:04,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:45:04,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 14:45:04,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:04,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:45:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:45:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:45:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:04,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:04,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:04,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:45:04,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:04,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:45:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:45:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:45:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:04,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:45:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:45:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:45:06,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725762476] [2020-10-28 14:45:06,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:45:06,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 14:45:06,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890169365] [2020-10-28 14:45:06,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 14:45:06,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:45:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 14:45:06,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:45:06,613 INFO L87 Difference]: Start difference. First operand 165 states and 256 transitions. Second operand 24 states. [2020-10-28 14:45:08,192 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 14:45:11,316 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 14:45:11,732 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 115 [2020-10-28 14:45:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:45:13,314 INFO L93 Difference]: Finished difference Result 212 states and 360 transitions. [2020-10-28 14:45:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:45:13,315 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 63 [2020-10-28 14:45:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:45:13,317 INFO L225 Difference]: With dead ends: 212 [2020-10-28 14:45:13,317 INFO L226 Difference]: Without dead ends: 206 [2020-10-28 14:45:13,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=143, Invalid=1497, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 14:45:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-28 14:45:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 166. [2020-10-28 14:45:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-28 14:45:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 258 transitions. [2020-10-28 14:45:13,350 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 258 transitions. Word has length 63 [2020-10-28 14:45:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:45:13,351 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 258 transitions. [2020-10-28 14:45:13,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 14:45:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 258 transitions. [2020-10-28 14:45:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 14:45:13,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:13,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:45:13,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 14:45:13,353 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1070454391, now seen corresponding path program 5 times [2020-10-28 14:45:13,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:13,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704755044] [2020-10-28 14:45:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:14,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:14,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 14:45:14,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:45:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-28 14:45:14,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:14,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:45:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 14:45:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 14:45:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:15,023 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 29 [2020-10-28 14:45:15,554 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2020-10-28 14:45:16,064 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 28 [2020-10-28 14:45:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:45:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:16,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:16,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:45:16,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:16,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:16,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:45:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:16,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:16,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:16,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:45:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:45:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 14:45:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:16,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:45:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:45:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:16,493 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-10-28 14:45:16,833 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-28 14:45:17,162 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-28 14:45:17,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:45:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:17,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:17,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:17,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:45:17,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:17,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:45:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:45:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:45:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:45:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:45:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:17,572 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-28 14:45:17,745 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-10-28 14:45:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:45:17,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704755044] [2020-10-28 14:45:17,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:45:17,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 14:45:17,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888746258] [2020-10-28 14:45:17,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 14:45:17,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:45:17,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 14:45:17,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:45:17,884 INFO L87 Difference]: Start difference. First operand 166 states and 258 transitions. Second operand 18 states. [2020-10-28 14:45:18,920 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-28 14:45:19,675 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 14:45:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:45:21,131 INFO L93 Difference]: Finished difference Result 210 states and 340 transitions. [2020-10-28 14:45:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:45:21,132 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-10-28 14:45:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:45:21,134 INFO L225 Difference]: With dead ends: 210 [2020-10-28 14:45:21,134 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 14:45:21,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:45:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 14:45:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2020-10-28 14:45:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-28 14:45:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 302 transitions. [2020-10-28 14:45:21,165 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 302 transitions. Word has length 63 [2020-10-28 14:45:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:45:21,166 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 302 transitions. [2020-10-28 14:45:21,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 14:45:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 302 transitions. [2020-10-28 14:45:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 14:45:21,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:21,170 INFO L422 BasicCegarLoop]: trace histogram [12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:45:21,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 14:45:21,170 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash 644353762, now seen corresponding path program 14 times [2020-10-28 14:45:21,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:21,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787089999] [2020-10-28 14:45:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:22,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 14:45:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:45:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-10-28 14:45:22,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:22,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 14:45:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:45:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:45:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:22,644 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-28 14:45:22,778 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-28 14:45:22,917 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-28 14:45:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:45:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:22,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:22,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:45:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:45:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:22,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:45:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:23,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:23,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:45:23,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 14:45:23,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:23,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:45:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:45:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:23,379 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-28 14:45:23,568 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-28 14:45:23,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:45:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:23,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:23,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:23,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:23,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:45:23,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:23,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:45:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:45:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:23,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:45:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:23,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:23,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:45:23,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 14:45:23,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:23,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:45:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:45:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:45:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:45:25,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787089999] [2020-10-28 14:45:25,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:45:25,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 14:45:25,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071721289] [2020-10-28 14:45:25,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 14:45:25,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:45:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 14:45:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:45:25,569 INFO L87 Difference]: Start difference. First operand 188 states and 302 transitions. Second operand 25 states. [2020-10-28 14:45:26,807 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-28 14:45:27,361 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 14:45:28,308 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:45:28,928 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 14:45:29,258 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-28 14:45:29,578 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-28 14:45:29,902 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-28 14:45:30,217 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 14:45:30,550 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 14:45:30,908 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 14:45:31,251 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 14:45:31,600 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 14:45:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:45:33,442 INFO L93 Difference]: Finished difference Result 233 states and 418 transitions. [2020-10-28 14:45:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:45:33,443 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 64 [2020-10-28 14:45:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:45:33,445 INFO L225 Difference]: With dead ends: 233 [2020-10-28 14:45:33,445 INFO L226 Difference]: Without dead ends: 227 [2020-10-28 14:45:33,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=151, Invalid=1655, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 14:45:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-28 14:45:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 189. [2020-10-28 14:45:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-28 14:45:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 304 transitions. [2020-10-28 14:45:33,480 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 304 transitions. Word has length 64 [2020-10-28 14:45:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:45:33,480 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 304 transitions. [2020-10-28 14:45:33,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 14:45:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 304 transitions. [2020-10-28 14:45:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 14:45:33,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:33,483 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:45:33,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 14:45:33,483 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:33,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:33,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1792998014, now seen corresponding path program 6 times [2020-10-28 14:45:33,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:33,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776519451] [2020-10-28 14:45:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:33,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:34,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:34,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 14:45:34,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:45:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-28 14:45:34,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:34,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:45:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 14:45:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 14:45:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:34,976 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-28 14:45:35,250 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-28 14:45:35,570 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-28 14:45:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:45:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:35,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:45:35,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:35,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:35,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:35,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:45:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:35,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:35,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:45:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:35,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:45:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:36,116 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2020-10-28 14:45:36,437 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-28 14:45:36,881 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-28 14:45:36,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:45:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:36,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:45:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:36,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:45:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:36,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:45:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:45:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:37,333 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-28 14:45:37,560 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-28 14:45:37,765 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-28 14:45:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:45:37,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776519451] [2020-10-28 14:45:37,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:45:37,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 14:45:37,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069389558] [2020-10-28 14:45:37,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:45:37,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:45:37,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:45:37,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:45:37,961 INFO L87 Difference]: Start difference. First operand 189 states and 304 transitions. Second operand 19 states. [2020-10-28 14:45:39,589 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-28 14:45:40,408 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-28 14:45:40,663 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-28 14:45:40,917 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-28 14:45:41,267 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-10-28 14:45:42,308 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-28 14:45:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:45:42,518 INFO L93 Difference]: Finished difference Result 214 states and 350 transitions. [2020-10-28 14:45:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:45:42,519 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-28 14:45:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:45:42,522 INFO L225 Difference]: With dead ends: 214 [2020-10-28 14:45:42,522 INFO L226 Difference]: Without dead ends: 208 [2020-10-28 14:45:42,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:45:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-28 14:45:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 189. [2020-10-28 14:45:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-28 14:45:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 304 transitions. [2020-10-28 14:45:42,555 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 304 transitions. Word has length 64 [2020-10-28 14:45:42,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:45:42,555 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 304 transitions. [2020-10-28 14:45:42,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:45:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 304 transitions. [2020-10-28 14:45:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 14:45:42,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:42,558 INFO L422 BasicCegarLoop]: trace histogram [13, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:45:42,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 14:45:42,558 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:42,558 INFO L82 PathProgramCache]: Analyzing trace with hash -882524091, now seen corresponding path program 15 times [2020-10-28 14:45:42,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:42,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488933608] [2020-10-28 14:45:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:43,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:43,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:45:43,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:45:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-10-28 14:45:43,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:43,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:45:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:45:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 14:45:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:45:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:43,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:43,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:43,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:45:43,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:43,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:43,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:43,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:45:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:43,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:43,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:45:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:43,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:43,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:45:43,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:45:43,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:43,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:45:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:45:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:45:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:43,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:45:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:43,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:45:43,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 14:45:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:43,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:43,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:45:43,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:45:43,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:43,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:45:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:45:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:45:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 14:45:44,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488933608] [2020-10-28 14:45:44,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:45:44,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:45:44,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844881845] [2020-10-28 14:45:44,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:45:44,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:45:44,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:45:44,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:45:44,191 INFO L87 Difference]: Start difference. First operand 189 states and 304 transitions. Second operand 17 states. [2020-10-28 14:45:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:45:46,203 INFO L93 Difference]: Finished difference Result 209 states and 344 transitions. [2020-10-28 14:45:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:45:46,204 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-28 14:45:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:45:46,206 INFO L225 Difference]: With dead ends: 209 [2020-10-28 14:45:46,206 INFO L226 Difference]: Without dead ends: 201 [2020-10-28 14:45:46,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:45:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-28 14:45:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 177. [2020-10-28 14:45:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-28 14:45:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 275 transitions. [2020-10-28 14:45:46,236 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 275 transitions. Word has length 65 [2020-10-28 14:45:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:45:46,236 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 275 transitions. [2020-10-28 14:45:46,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:45:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 275 transitions. [2020-10-28 14:45:46,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 14:45:46,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:46,238 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:45:46,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 14:45:46,239 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:46,239 INFO L82 PathProgramCache]: Analyzing trace with hash 365709353, now seen corresponding path program 7 times [2020-10-28 14:45:46,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:46,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886922033] [2020-10-28 14:45:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:48,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:48,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:45:48,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:45:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1783 [2020-10-28 14:45:48,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:48,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:45:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 14:45:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 14:45:48,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:49,011 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 59 [2020-10-28 14:45:49,728 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 57 [2020-10-28 14:45:50,418 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 57 [2020-10-28 14:45:50,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:45:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:50,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:50,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:50,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:45:50,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:50,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:50,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:50,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:45:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:50,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:45:50,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:50,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:45:50,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:50,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:45:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:45:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:45:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:50,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:50,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:45:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 14:45:50,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:50,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:45:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:45:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:50,926 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-10-28 14:45:51,204 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-28 14:45:51,501 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-28 14:45:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:45:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:51,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:45:51,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:45:51,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:51,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:45:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:45:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:45:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:45:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:51,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:45:51,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:45:51,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:45:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 14:45:51,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:45:51,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:45:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:45:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:45:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:45:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:52,260 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-28 14:45:52,529 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-28 14:45:52,820 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-28 14:45:53,051 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-28 14:45:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:45:53,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886922033] [2020-10-28 14:45:53,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:45:53,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 14:45:53,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074690769] [2020-10-28 14:45:53,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 14:45:53,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:45:53,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 14:45:53,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:45:53,089 INFO L87 Difference]: Start difference. First operand 177 states and 275 transitions. Second operand 20 states. [2020-10-28 14:45:54,310 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 14:45:55,800 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 14:45:56,150 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 14:45:56,507 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 14:45:57,075 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 112 [2020-10-28 14:45:57,827 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 14:45:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:45:58,064 INFO L93 Difference]: Finished difference Result 206 states and 331 transitions. [2020-10-28 14:45:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:45:58,065 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-28 14:45:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:45:58,068 INFO L225 Difference]: With dead ends: 206 [2020-10-28 14:45:58,068 INFO L226 Difference]: Without dead ends: 200 [2020-10-28 14:45:58,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2020-10-28 14:45:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-28 14:45:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 178. [2020-10-28 14:45:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 14:45:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 277 transitions. [2020-10-28 14:45:58,098 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 277 transitions. Word has length 65 [2020-10-28 14:45:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:45:58,099 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 277 transitions. [2020-10-28 14:45:58,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 14:45:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 277 transitions. [2020-10-28 14:45:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 14:45:58,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:58,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:45:58,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 14:45:58,101 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:58,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1343472992, now seen corresponding path program 2 times [2020-10-28 14:45:58,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:58,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377700593] [2020-10-28 14:45:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:58,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:02,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:02,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:46:02,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:46:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4710 [2020-10-28 14:46:02,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:02,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:46:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:46:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:46:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:46:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:02,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:02,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:02,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:46:02,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:02,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:46:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:46:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:46:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:46:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:03,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:03,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:46:03,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:46:03,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:03,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 14:46:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:03,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:46:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:03,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:03,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:46:03,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:03,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:03,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:46:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 14:46:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:03,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:03,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:46:03,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:46:03,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:03,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:03,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 14:46:03,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 14:46:03,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377700593] [2020-10-28 14:46:03,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:03,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:46:03,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569423985] [2020-10-28 14:46:03,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:46:03,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:03,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:46:03,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:46:03,202 INFO L87 Difference]: Start difference. First operand 178 states and 277 transitions. Second operand 9 states. [2020-10-28 14:46:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:04,709 INFO L93 Difference]: Finished difference Result 361 states and 563 transitions. [2020-10-28 14:46:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:46:04,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-28 14:46:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:04,712 INFO L225 Difference]: With dead ends: 361 [2020-10-28 14:46:04,712 INFO L226 Difference]: Without dead ends: 229 [2020-10-28 14:46:04,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:46:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-28 14:46:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 181. [2020-10-28 14:46:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-28 14:46:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 259 transitions. [2020-10-28 14:46:04,744 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 259 transitions. Word has length 65 [2020-10-28 14:46:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:04,744 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 259 transitions. [2020-10-28 14:46:04,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:46:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 259 transitions. [2020-10-28 14:46:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 14:46:04,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:04,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:04,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 14:46:04,747 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash 685113118, now seen corresponding path program 8 times [2020-10-28 14:46:04,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:04,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304564206] [2020-10-28 14:46:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:06,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:06,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:46:06,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-28 14:46:06,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:06,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:46:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 14:46:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 14:46:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:06,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:06,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:06,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:06,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:06,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:06,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:06,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:06,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:06,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:46:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:06,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:46:06,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:06,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:06,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:46:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:06,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:06,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:46:06,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:06,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 14:46:06,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:06,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:46:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:46:06,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:46:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:06,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:06,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:07,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 14:46:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:07,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:07,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:46:07,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:07,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:46:07,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:07,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:46:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 14:46:07,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304564206] [2020-10-28 14:46:07,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:07,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 14:46:07,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849454897] [2020-10-28 14:46:07,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 14:46:07,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:07,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 14:46:07,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:46:07,307 INFO L87 Difference]: Start difference. First operand 181 states and 259 transitions. Second operand 22 states. [2020-10-28 14:46:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:09,841 INFO L93 Difference]: Finished difference Result 223 states and 342 transitions. [2020-10-28 14:46:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:46:09,842 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-28 14:46:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:09,844 INFO L225 Difference]: With dead ends: 223 [2020-10-28 14:46:09,844 INFO L226 Difference]: Without dead ends: 217 [2020-10-28 14:46:09,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:46:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-28 14:46:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 175. [2020-10-28 14:46:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-28 14:46:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 248 transitions. [2020-10-28 14:46:09,875 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 248 transitions. Word has length 65 [2020-10-28 14:46:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:09,876 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 248 transitions. [2020-10-28 14:46:09,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 14:46:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 248 transitions. [2020-10-28 14:46:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 14:46:09,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:09,878 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:09,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 14:46:09,878 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash -930566178, now seen corresponding path program 9 times [2020-10-28 14:46:09,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:09,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847030567] [2020-10-28 14:46:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:11,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 14:46:11,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:12,541 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2020-10-28 14:46:13,487 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 99 [2020-10-28 14:46:14,449 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 95 [2020-10-28 14:46:14,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:46:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:46:14,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:14,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:46:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:46:14,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 14:46:14,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:46:14,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:14,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:46:14,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:14,903 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-10-28 14:46:15,213 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-28 14:46:15,518 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-28 14:46:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:46:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:15,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:15,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:46:15,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:15,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:46:15,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:15,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:46:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:46:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:15,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:15,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:46:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:16,357 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2020-10-28 14:46:16,654 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2020-10-28 14:46:16,956 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2020-10-28 14:46:17,335 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2020-10-28 14:46:17,593 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2020-10-28 14:46:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:46:17,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847030567] [2020-10-28 14:46:17,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:17,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:46:17,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918607060] [2020-10-28 14:46:17,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:46:17,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:17,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:46:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:46:17,635 INFO L87 Difference]: Start difference. First operand 175 states and 248 transitions. Second operand 21 states. [2020-10-28 14:46:18,810 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-28 14:46:20,407 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 14:46:20,788 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 14:46:21,095 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-28 14:46:21,483 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 14:46:22,049 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-28 14:46:23,186 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 14:46:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:23,513 INFO L93 Difference]: Finished difference Result 207 states and 307 transitions. [2020-10-28 14:46:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:46:23,514 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 66 [2020-10-28 14:46:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:23,516 INFO L225 Difference]: With dead ends: 207 [2020-10-28 14:46:23,516 INFO L226 Difference]: Without dead ends: 201 [2020-10-28 14:46:23,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 14:46:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-28 14:46:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 176. [2020-10-28 14:46:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-28 14:46:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 250 transitions. [2020-10-28 14:46:23,548 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 250 transitions. Word has length 66 [2020-10-28 14:46:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:23,548 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 250 transitions. [2020-10-28 14:46:23,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:46:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 250 transitions. [2020-10-28 14:46:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 14:46:23,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:23,550 INFO L422 BasicCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:23,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 14:46:23,550 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:23,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1834565321, now seen corresponding path program 10 times [2020-10-28 14:46:23,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:23,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859773567] [2020-10-28 14:46:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:24,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:24,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:46:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:25,814 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 30 [2020-10-28 14:46:26,670 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 47 [2020-10-28 14:46:27,599 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 37 [2020-10-28 14:46:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:27,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:27,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:27,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:27,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:27,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:27,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:46:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:27,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:27,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:46:27,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:27,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:27,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:46:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:27,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:27,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:46:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:28,062 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-10-28 14:46:28,363 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-28 14:46:28,677 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-28 14:46:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 14:46:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:28,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:28,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:46:28,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:46:28,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:28,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:46:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:46:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:28,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking...