/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:15:32,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:15:32,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:15:32,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:15:32,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:15:32,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:15:32,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:15:32,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:15:32,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:15:32,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:15:32,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:15:32,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:15:32,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:15:32,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:15:32,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:15:32,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:15:32,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:15:32,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:15:32,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:15:32,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:15:32,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:15:32,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:15:32,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:15:32,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:15:32,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:15:32,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:15:32,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:15:32,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:15:32,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:15:32,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:15:32,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:15:32,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:15:32,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:15:32,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:15:32,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:15:32,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:15:32,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:15:32,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:15:32,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:15:32,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:15:32,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:15:32,882 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 [2020-09-25 03:15:32,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:15:32,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:15:32,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:15:32,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:15:32,944 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:15:32,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:15:32,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:15:32,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:15:32,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:15:32,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:15:32,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:15:32,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:15:32,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:15:32,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:15:32,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:15:32,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:15:32,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:15:32,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:15:32,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:15:32,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:15:32,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:15:32,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:32,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:15:32,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:15:32,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:15:32,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:15:32,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:15:32,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:15:32,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:15:32,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:15:33,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:15:33,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:15:33,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:15:33,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:15:33,488 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:15:33,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 03:15:33,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f626067c0/bb9e77ec6d5542c9b8f4801037e0ab57/FLAG48b83295e [2020-09-25 03:15:34,217 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:15:34,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 03:15:34,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f626067c0/bb9e77ec6d5542c9b8f4801037e0ab57/FLAG48b83295e [2020-09-25 03:15:34,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f626067c0/bb9e77ec6d5542c9b8f4801037e0ab57 [2020-09-25 03:15:34,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:15:34,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:15:34,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:34,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:15:34,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:15:34,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:34" (1/1) ... [2020-09-25 03:15:34,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f7a528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:34, skipping insertion in model container [2020-09-25 03:15:34,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:34" (1/1) ... [2020-09-25 03:15:34,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:15:34,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:15:35,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:35,126 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:15:35,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:35,232 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:15:35,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35 WrapperNode [2020-09-25 03:15:35,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:35,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:15:35,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:15:35,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:15:35,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (1/1) ... [2020-09-25 03:15:35,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (1/1) ... [2020-09-25 03:15:35,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (1/1) ... [2020-09-25 03:15:35,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (1/1) ... [2020-09-25 03:15:35,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (1/1) ... [2020-09-25 03:15:35,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (1/1) ... [2020-09-25 03:15:35,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (1/1) ... [2020-09-25 03:15:35,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:15:35,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:15:35,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:15:35,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:15:35,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (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 [2020-09-25 03:15:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:15:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:15:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:15:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:15:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 03:15:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 03:15:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:15:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:15:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:15:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:15:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:15:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:15:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:15:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:15:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:15:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:15:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:15:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:15:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:15:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:15:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:15:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:15:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:15:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:15:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:15:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:15:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:15:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:15:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:15:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:15:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:15:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:15:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:15:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:15:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:15:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:15:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:15:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:15:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:15:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:15:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:15:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:15:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:15:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:15:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:15:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:15:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:15:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:15:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:15:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:15:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:15:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:15:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:15:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:15:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:15:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:15:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:15:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:15:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:15:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:15:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:15:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:15:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:15:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:15:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:15:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 03:15:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:15:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:15:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:15:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:15:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:15:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:15:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:15:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:15:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:15:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:15:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:15:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:15:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:15:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:15:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:15:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:15:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:15:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:15:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:15:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:15:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:15:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:15:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:15:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:15:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:15:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:15:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:15:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:15:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:15:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:15:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:15:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:15:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:15:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:15:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 03:15:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 03:15:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:15:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:15:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:15:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:15:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:15:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:15:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:15:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:15:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:15:35,758 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 03:15:36,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:15:36,047 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:15:36,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:36 BoogieIcfgContainer [2020-09-25 03:15:36,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:15:36,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:15:36,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:15:36,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:15:36,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:34" (1/3) ... [2020-09-25 03:15:36,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c79320e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:36, skipping insertion in model container [2020-09-25 03:15:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:35" (2/3) ... [2020-09-25 03:15:36,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c79320e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:36, skipping insertion in model container [2020-09-25 03:15:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:36" (3/3) ... [2020-09-25 03:15:36,063 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 03:15:36,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:15:36,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:15:36,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:15:36,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:15:36,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:15:36,133 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:15:36,133 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:15:36,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:15:36,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:15:36,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:15:36,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:15:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 03:15:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 03:15:36,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:36,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:36,170 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 03:15:36,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:36,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752912695] [2020-09-25 03:15:36,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:36,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 03:15:36,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:36,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 03:15:36,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:15:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:15:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:36,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:15:36,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:15:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:36,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:36,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:15:36,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 03:15:36,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 03:15:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:36,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752912695] [2020-09-25 03:15:36,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:36,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:15:36,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265266687] [2020-09-25 03:15:36,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:15:36,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:15:36,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:36,727 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 03:15:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:37,035 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 03:15:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:15:37,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 03:15:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:37,054 INFO L225 Difference]: With dead ends: 230 [2020-09-25 03:15:37,054 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 03:15:37,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:15:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 03:15:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 03:15:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 03:15:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 03:15:37,127 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 03:15:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:37,128 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 03:15:37,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:15:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 03:15:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 03:15:37,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:37,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:37,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:15:37,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:37,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:37,132 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 03:15:37,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:37,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581951688] [2020-09-25 03:15:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:37,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:37,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 03:15:37,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:37,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 03:15:37,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:15:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:37,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:37,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:37,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:37,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:15:37,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:15:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:15:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:37,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:37,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:15:37,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 03:15:37,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:15:37,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:15:37,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:37,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581951688] [2020-09-25 03:15:37,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:37,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:15:37,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815125910] [2020-09-25 03:15:37,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:15:37,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:37,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:15:37,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:37,586 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 03:15:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:37,919 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 03:15:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:15:37,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 03:15:37,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:37,922 INFO L225 Difference]: With dead ends: 172 [2020-09-25 03:15:37,922 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 03:15:37,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:15:37,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 03:15:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 03:15:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 03:15:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 03:15:37,937 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 03:15:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:37,938 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 03:15:37,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:15:37,938 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 03:15:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:15:37,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:37,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:37,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:15:37,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:37,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 03:15:37,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:37,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108053461] [2020-09-25 03:15:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:42,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:42,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:15:42,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:15:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 03:15:42,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:15:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:15:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:15:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:15:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:43,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:43,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:15:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:43,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:43,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:15:43,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:43,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 03:15:43,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:15:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:15:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:43,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108053461] [2020-09-25 03:15:43,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:43,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 03:15:43,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502050665] [2020-09-25 03:15:43,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:15:43,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:43,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:15:43,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:15:43,542 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 12 states. [2020-09-25 03:15:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:44,220 INFO L93 Difference]: Finished difference Result 223 states and 246 transitions. [2020-09-25 03:15:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:15:44,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-09-25 03:15:44,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:44,224 INFO L225 Difference]: With dead ends: 223 [2020-09-25 03:15:44,225 INFO L226 Difference]: Without dead ends: 168 [2020-09-25 03:15:44,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:15:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-25 03:15:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 109. [2020-09-25 03:15:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 03:15:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2020-09-25 03:15:44,238 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 51 [2020-09-25 03:15:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:44,238 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2020-09-25 03:15:44,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:15:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2020-09-25 03:15:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:15:44,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:44,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:44,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:15:44,241 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:44,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:44,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2045358757, now seen corresponding path program 1 times [2020-09-25 03:15:44,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:44,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108296203] [2020-09-25 03:15:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:49,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:15:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:15:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 03:15:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:15:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:15:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:15:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:49,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:49,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:15:49,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:49,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:15:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:49,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:15:49,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-25 03:15:49,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:15:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:15:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:50,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108296203] [2020-09-25 03:15:50,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:50,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:15:50,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129299529] [2020-09-25 03:15:50,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:15:50,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:15:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:15:50,136 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand 16 states. [2020-09-25 03:15:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:50,970 INFO L93 Difference]: Finished difference Result 255 states and 282 transitions. [2020-09-25 03:15:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 03:15:50,971 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-09-25 03:15:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:50,974 INFO L225 Difference]: With dead ends: 255 [2020-09-25 03:15:50,974 INFO L226 Difference]: Without dead ends: 200 [2020-09-25 03:15:50,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:15:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-25 03:15:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 125. [2020-09-25 03:15:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 03:15:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2020-09-25 03:15:51,000 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 52 [2020-09-25 03:15:51,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:51,001 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2020-09-25 03:15:51,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:15:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2020-09-25 03:15:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:15:51,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:51,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:51,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:15:51,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:51,007 INFO L82 PathProgramCache]: Analyzing trace with hash -403760828, now seen corresponding path program 1 times [2020-09-25 03:15:51,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:51,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115339272] [2020-09-25 03:15:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:56,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:56,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 03:15:56,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:15:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:15:56,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:15:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 03:15:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:15:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:56,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:56,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:56,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:15:56,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:56,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:15:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:56,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:15:56,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 03:15:56,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:15:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:15:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:56,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115339272] [2020-09-25 03:15:56,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:56,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 03:15:56,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356236769] [2020-09-25 03:15:56,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:15:56,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:56,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:15:56,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:15:56,441 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand 12 states. [2020-09-25 03:15:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:57,083 INFO L93 Difference]: Finished difference Result 254 states and 280 transitions. [2020-09-25 03:15:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:15:57,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 03:15:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:57,086 INFO L225 Difference]: With dead ends: 254 [2020-09-25 03:15:57,086 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 03:15:57,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:15:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 03:15:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 145. [2020-09-25 03:15:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-25 03:15:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2020-09-25 03:15:57,099 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 53 [2020-09-25 03:15:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:57,099 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2020-09-25 03:15:57,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:15:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2020-09-25 03:15:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 03:15:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:57,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:57,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:15:57,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:57,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1909380728, now seen corresponding path program 1 times [2020-09-25 03:15:57,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:57,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031520218] [2020-09-25 03:15:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:02,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:02,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 03:16:02,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:16:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 03:16:02,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:16:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:16:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:16:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:16:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:02,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:02,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:16:02,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:02,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:16:02,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:16:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:16:02,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:16:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:02,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:16:02,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:16:02,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 03:16:02,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:16:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:16:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:16:02,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031520218] [2020-09-25 03:16:02,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:16:02,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:16:02,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764351439] [2020-09-25 03:16:02,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:16:02,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:02,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:16:02,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:16:02,817 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand 16 states. [2020-09-25 03:16:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:03,635 INFO L93 Difference]: Finished difference Result 259 states and 285 transitions. [2020-09-25 03:16:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:16:03,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-09-25 03:16:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:03,637 INFO L225 Difference]: With dead ends: 259 [2020-09-25 03:16:03,637 INFO L226 Difference]: Without dead ends: 204 [2020-09-25 03:16:03,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:16:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-25 03:16:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 129. [2020-09-25 03:16:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-25 03:16:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2020-09-25 03:16:03,648 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 54 [2020-09-25 03:16:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:03,649 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2020-09-25 03:16:03,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:16:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2020-09-25 03:16:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:16:03,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:03,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:03,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:16:03,651 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:03,652 INFO L82 PathProgramCache]: Analyzing trace with hash -894397866, now seen corresponding path program 1 times [2020-09-25 03:16:03,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:03,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024840489] [2020-09-25 03:16:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:07,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:07,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 03:16:07,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:16:07,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3947 [2020-09-25 03:16:07,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:16:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:16:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:16:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:16:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:16:07,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:16:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:16:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:16:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:16:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:16:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 03:16:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:16:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:16:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:16:08,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024840489] [2020-09-25 03:16:08,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:16:08,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 03:16:08,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131469679] [2020-09-25 03:16:08,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:16:08,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:08,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:16:08,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:16:08,040 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand 12 states. [2020-09-25 03:16:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:08,650 INFO L93 Difference]: Finished difference Result 231 states and 252 transitions. [2020-09-25 03:16:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:16:08,651 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-09-25 03:16:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:08,652 INFO L225 Difference]: With dead ends: 231 [2020-09-25 03:16:08,653 INFO L226 Difference]: Without dead ends: 203 [2020-09-25 03:16:08,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:16:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-25 03:16:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 149. [2020-09-25 03:16:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-25 03:16:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2020-09-25 03:16:08,662 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 55 [2020-09-25 03:16:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:08,662 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2020-09-25 03:16:08,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:16:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2020-09-25 03:16:08,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:16:08,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:08,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:08,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:16:08,665 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash 923827969, now seen corresponding path program 1 times [2020-09-25 03:16:08,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:08,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087306890] [2020-09-25 03:16:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:08,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:11,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:11,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 03:16:11,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:16:11,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2374 [2020-09-25 03:16:11,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:11,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:16:11,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:16:11,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:16:11,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:16:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:11,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:11,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:16:11,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:16:11,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:16:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:16:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:16:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:11,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:11,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:16:11,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:16:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 03:16:11,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:16:11,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:11,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:16:11,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:16:11,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087306890] [2020-09-25 03:16:11,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:16:11,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:16:11,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789239703] [2020-09-25 03:16:11,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:16:11,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:11,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:16:11,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:16:11,508 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 11 states. [2020-09-25 03:16:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:12,071 INFO L93 Difference]: Finished difference Result 303 states and 332 transitions. [2020-09-25 03:16:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:16:12,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-09-25 03:16:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:12,074 INFO L225 Difference]: With dead ends: 303 [2020-09-25 03:16:12,074 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 03:16:12,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:16:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 03:16:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-09-25 03:16:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-25 03:16:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2020-09-25 03:16:12,082 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 55 [2020-09-25 03:16:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:12,083 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2020-09-25 03:16:12,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:16:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2020-09-25 03:16:12,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 03:16:12,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:12,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:12,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:16:12,085 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:12,085 INFO L82 PathProgramCache]: Analyzing trace with hash -118714797, now seen corresponding path program 1 times [2020-09-25 03:16:12,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:12,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575026820] [2020-09-25 03:16:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:14,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2758 [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:16:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:16:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:14,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:14,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:14,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:16:14,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:16:14,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:16:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:16:14,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:16:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:15,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:16:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 03:16:15,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:16:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:16:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:16:15,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575026820] [2020-09-25 03:16:15,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:16:15,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 03:16:15,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802988570] [2020-09-25 03:16:15,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:16:15,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:15,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:16:15,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:16:15,235 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 12 states. [2020-09-25 03:16:15,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:15,892 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2020-09-25 03:16:15,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:16:15,893 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-25 03:16:15,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:15,895 INFO L225 Difference]: With dead ends: 222 [2020-09-25 03:16:15,895 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 03:16:15,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:16:15,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 03:16:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 152. [2020-09-25 03:16:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 03:16:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2020-09-25 03:16:15,904 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 57 [2020-09-25 03:16:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:15,904 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2020-09-25 03:16:15,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:16:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2020-09-25 03:16:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:16:15,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:15,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:15,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:16:15,906 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:15,906 INFO L82 PathProgramCache]: Analyzing trace with hash -24792592, now seen corresponding path program 1 times [2020-09-25 03:16:15,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:15,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140978089] [2020-09-25 03:16:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:16,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:16,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:16:16,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 03:16:16,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:16:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:16:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:16:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:16,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:16:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:16,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:16,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:16,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:16:16,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:16:16,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:16:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:16:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:16,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:16:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:16,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:16,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:16:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 03:16:16,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:16:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:16:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:16:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:16:16,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140978089] [2020-09-25 03:16:16,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:16:16,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:16:16,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325586343] [2020-09-25 03:16:16,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:16:16,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:16,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:16:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:16:16,346 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand 9 states. [2020-09-25 03:16:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:16,682 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2020-09-25 03:16:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:16:16,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-09-25 03:16:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:16,685 INFO L225 Difference]: With dead ends: 214 [2020-09-25 03:16:16,685 INFO L226 Difference]: Without dead ends: 167 [2020-09-25 03:16:16,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:16:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-25 03:16:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 145. [2020-09-25 03:16:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-25 03:16:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2020-09-25 03:16:16,692 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 59 [2020-09-25 03:16:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:16,692 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2020-09-25 03:16:16,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:16:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2020-09-25 03:16:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 03:16:16,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:16,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:16,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:16:16,694 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:16,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 03:16:16,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:16,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142093049] [2020-09-25 03:16:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:21,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:21,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 03:16:21,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:16:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 03:16:21,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:16:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:16:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:16:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:16:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:21,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:21,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:16:21,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:16:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:16:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:16:21,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:21,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:16:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:22,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:22,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 03:16:22,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-09-25 03:16:22,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:16:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:16:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:16:22,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142093049] [2020-09-25 03:16:22,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:16:22,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 03:16:22,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006473259] [2020-09-25 03:16:22,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 03:16:22,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:22,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 03:16:22,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:16:22,772 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand 18 states. [2020-09-25 03:16:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:23,741 INFO L93 Difference]: Finished difference Result 254 states and 278 transitions. [2020-09-25 03:16:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:16:23,742 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 71 [2020-09-25 03:16:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:23,744 INFO L225 Difference]: With dead ends: 254 [2020-09-25 03:16:23,745 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 03:16:23,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:16:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 03:16:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 151. [2020-09-25 03:16:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 03:16:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2020-09-25 03:16:23,753 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 71 [2020-09-25 03:16:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:23,754 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2020-09-25 03:16:23,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 03:16:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2020-09-25 03:16:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 03:16:23,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:23,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:23,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:16:23,756 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1420013041, now seen corresponding path program 1 times [2020-09-25 03:16:23,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:23,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235637334] [2020-09-25 03:16:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking...