/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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 04:24:13,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:13,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:13,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:13,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:13,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:13,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:13,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:13,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:13,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:13,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:13,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:13,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:13,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:13,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:13,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:13,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:13,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:13,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:13,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:13,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:13,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:13,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:13,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:13,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:13,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:13,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:13,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:13,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:13,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:13,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:13,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:13,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:13,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:13,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:13,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:13,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:13,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:13,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:13,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:13,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:13,330 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 04:24:13,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:13,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:13,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:13,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:13,377 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:13,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:13,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:13,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:13,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:13,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:13,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:13,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:13,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:13,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:13,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:13,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:13,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:13,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:13,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:13,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:13,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:13,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:13,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:13,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:13,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:13,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:13,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:13,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:13,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:13,384 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:13,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:13,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:13,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:13,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:13,894 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:13,895 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 04:24:13,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93a1c8f17/e9f82215864640fbba1ec1a70d047e31/FLAG803b5db0a [2020-09-25 04:24:14,647 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:14,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 04:24:14,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93a1c8f17/e9f82215864640fbba1ec1a70d047e31/FLAG803b5db0a [2020-09-25 04:24:14,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93a1c8f17/e9f82215864640fbba1ec1a70d047e31 [2020-09-25 04:24:14,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:14,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:14,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:14,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:14,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:14,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:14" (1/1) ... [2020-09-25 04:24:14,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4453c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:14, skipping insertion in model container [2020-09-25 04:24:14,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:14" (1/1) ... [2020-09-25 04:24:14,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:14,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:15,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:15,513 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:15,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:15,620 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:15,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15 WrapperNode [2020-09-25 04:24:15,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:15,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:15,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:15,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:15,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (1/1) ... [2020-09-25 04:24:15,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (1/1) ... [2020-09-25 04:24:15,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (1/1) ... [2020-09-25 04:24:15,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (1/1) ... [2020-09-25 04:24:15,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (1/1) ... [2020-09-25 04:24:15,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (1/1) ... [2020-09-25 04:24:15,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (1/1) ... [2020-09-25 04:24:15,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:15,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:15,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:15,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:15,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (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 04:24:15,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:15,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 04:24:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 04:24:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 04:24:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 04:24:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 04:24:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 04:24:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:24:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:24:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:24:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:24:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:24:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:24:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:24:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:24:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:24:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:24:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:24:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:24:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:24:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:24:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:24:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:24:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:24:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:24:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:24:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:24:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:24:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:24:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:24:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:24:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:24:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:24:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:24:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:24:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:24:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:24:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:24:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:24:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:24:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:24:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:24:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:24:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:24:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:24:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:24:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:24:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:24:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:24:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:24:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:24:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:24:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:24:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:24:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:24:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:24:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:24:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:24:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:24:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:24:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:24:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:24:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:24:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:24:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:24:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:24:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:24:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:24:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:24:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:24:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:24:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:24:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:24:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:24:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:24:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:24:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:24:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:24:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:24:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:24:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:24:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:24:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:24:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:24:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:24:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:24:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:24:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:24:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:24:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:24:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:24:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:24:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:24:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:24:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:24:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 04:24:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 04:24:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:24:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:24:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:24:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:24:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:24:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:24:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:16,225 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 04:24:16,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:16,544 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 04:24:16,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:16 BoogieIcfgContainer [2020-09-25 04:24:16,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:16,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:16,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:16,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:16,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:14" (1/3) ... [2020-09-25 04:24:16,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5da00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:16, skipping insertion in model container [2020-09-25 04:24:16,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:15" (2/3) ... [2020-09-25 04:24:16,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5da00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:16, skipping insertion in model container [2020-09-25 04:24:16,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:16" (3/3) ... [2020-09-25 04:24:16,559 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 04:24:16,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:16,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:16,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:16,628 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:16,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:16,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:16,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:16,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:16,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:16,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:16,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 04:24:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 04:24:16,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:16,666 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 04:24:16,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:16,675 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 04:24:16,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:16,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584535715] [2020-09-25 04:24:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:16,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:16,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:24:16,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 04:24:16,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:16,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:24:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:24:17,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:17,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:17,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:24:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:17,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:17,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:24:17,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:17,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 04:24:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:17,207 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 04:24:17,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584535715] [2020-09-25 04:24:17,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:17,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:17,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518221748] [2020-09-25 04:24:17,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:17,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:17,244 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 04:24:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:17,591 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 04:24:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:24:17,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 04:24:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:17,611 INFO L225 Difference]: With dead ends: 230 [2020-09-25 04:24:17,611 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 04:24:17,616 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 04:24:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 04:24:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 04:24:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 04:24:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 04:24:17,684 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 04:24:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:17,684 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 04:24:17,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 04:24:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 04:24:17,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:17,687 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 04:24:17,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:17,688 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 04:24:17,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:17,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758830537] [2020-09-25 04:24:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:17,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:17,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:17,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:24:17,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:17,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 04:24:17,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:17,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:24:17,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:18,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:18,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:24:18,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:18,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:18,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:18,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:18,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:24:18,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:18,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:24:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:24:18,235 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 04:24:18,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758830537] [2020-09-25 04:24:18,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:18,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:24:18,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72941542] [2020-09-25 04:24:18,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:18,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:18,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:18,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:18,240 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 04:24:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:18,662 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 04:24:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:24:18,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 04:24:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:18,665 INFO L225 Difference]: With dead ends: 172 [2020-09-25 04:24:18,665 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 04:24:18,667 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 04:24:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 04:24:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 04:24:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 04:24:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 04:24:18,679 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 04:24:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:18,680 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 04:24:18,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 04:24:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:24:18,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:18,682 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 04:24:18,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:18,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 04:24:18,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:18,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657278155] [2020-09-25 04:24:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:23,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:23,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 04:24:23,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:24:23,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:24:23,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:23,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:24:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:23,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:23,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:23,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:23,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:23,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:23,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:23,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:23,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:23,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:23,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:24:23,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 04:24:23,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:23,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:24:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:24,039 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 04:24:24,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657278155] [2020-09-25 04:24:24,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:24,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:24:24,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917368769] [2020-09-25 04:24:24,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:24:24,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:24,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:24:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:24,045 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2020-09-25 04:24:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:24,425 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-09-25 04:24:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:24:24,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 04:24:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:24,428 INFO L225 Difference]: With dead ends: 193 [2020-09-25 04:24:24,428 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 04:24:24,429 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 04:24:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 04:24:24,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-09-25 04:24:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 04:24:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-09-25 04:24:24,441 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-09-25 04:24:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:24,441 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-09-25 04:24:24,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:24:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-09-25 04:24:24,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 04:24:24,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:24,444 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-09-25 04:24:24,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:24,445 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-25 04:24:24,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:24,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805718368] [2020-09-25 04:24:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:24:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:24:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:24:29,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:24:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:24:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:24:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:29,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 04:24:29,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 04:24:29,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:24:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:24:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:24:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:30,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805718368] [2020-09-25 04:24:30,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:30,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:24:30,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274547762] [2020-09-25 04:24:30,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:24:30,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:30,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:24:30,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:30,057 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 6 states. [2020-09-25 04:24:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:30,336 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2020-09-25 04:24:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:24:30,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-09-25 04:24:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:30,339 INFO L225 Difference]: With dead ends: 196 [2020-09-25 04:24:30,339 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 04:24:30,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 04:24:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-09-25 04:24:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 04:24:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-09-25 04:24:30,357 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 70 [2020-09-25 04:24:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:30,357 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-09-25 04:24:30,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:24:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-09-25 04:24:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 04:24:30,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:30,359 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 04:24:30,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:30,360 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:30,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 04:24:30,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:30,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040158585] [2020-09-25 04:24:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:24:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:24:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:24:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:35,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:24:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:35,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:35,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:35,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:35,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:35,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:35,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:24:35,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-25 04:24:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:35,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:24:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:35,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040158585] [2020-09-25 04:24:35,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:35,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:24:35,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386047419] [2020-09-25 04:24:35,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:24:35,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:35,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:24:35,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:35,962 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 11 states. [2020-09-25 04:24:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:36,336 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2020-09-25 04:24:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:24:36,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 04:24:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:36,339 INFO L225 Difference]: With dead ends: 214 [2020-09-25 04:24:36,339 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 04:24:36,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:24:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 04:24:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-09-25 04:24:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 04:24:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-09-25 04:24:36,352 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 71 [2020-09-25 04:24:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:36,353 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-09-25 04:24:36,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:24:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-09-25 04:24:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 04:24:36,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:36,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:36,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:24:36,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-25 04:24:36,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:36,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829133634] [2020-09-25 04:24:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 04:24:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 04:24:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:41,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:24:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:24:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:41,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:41,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:24:42,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:42,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-09-25 04:24:42,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:24:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:24:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:42,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829133634] [2020-09-25 04:24:42,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:42,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 04:24:42,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259701179] [2020-09-25 04:24:42,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 04:24:42,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:42,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 04:24:42,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:24:42,263 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 13 states. [2020-09-25 04:24:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:42,749 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-09-25 04:24:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:24:42,750 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 04:24:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:42,753 INFO L225 Difference]: With dead ends: 235 [2020-09-25 04:24:42,753 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 04:24:42,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:24:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 04:24:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-09-25 04:24:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 04:24:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-09-25 04:24:42,778 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 91 [2020-09-25 04:24:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:42,779 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-09-25 04:24:42,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 04:24:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-09-25 04:24:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 04:24:42,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:42,784 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:42,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:24:42,784 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-25 04:24:42,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:42,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986111223] [2020-09-25 04:24:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 04:24:47,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:47,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:24:47,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:24:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:24:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:47,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:47,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:48,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:48,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:24:48,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-09-25 04:24:48,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:48,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:24:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:24:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:49,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986111223] [2020-09-25 04:24:49,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:49,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 04:24:49,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914672228] [2020-09-25 04:24:49,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:24:49,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:49,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:24:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:24:49,080 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 15 states. [2020-09-25 04:24:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:49,618 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-09-25 04:24:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:24:49,619 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-25 04:24:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:49,621 INFO L225 Difference]: With dead ends: 256 [2020-09-25 04:24:49,621 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 04:24:49,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:24:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 04:24:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-09-25 04:24:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 04:24:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-09-25 04:24:49,631 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-09-25 04:24:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:49,631 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-09-25 04:24:49,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:24:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-09-25 04:24:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 04:24:49,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:49,634 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:49,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:24:49,634 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:49,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-09-25 04:24:49,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:49,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690805427] [2020-09-25 04:24:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:52,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:52,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 04:24:52,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:24:52,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-09-25 04:24:52,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:52,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:24:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 04:24:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 04:24:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:52,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:52,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:52,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:52,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:24:52,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:52,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:24:54,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:54,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-09-25 04:24:54,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:24:54,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:24:54,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 04:24:54,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690805427] [2020-09-25 04:24:54,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:54,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:24:54,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876641112] [2020-09-25 04:24:54,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:24:54,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:24:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:24:54,597 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand 18 states. [2020-09-25 04:24:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:55,646 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2020-09-25 04:24:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 04:24:55,646 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 131 [2020-09-25 04:24:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:55,649 INFO L225 Difference]: With dead ends: 308 [2020-09-25 04:24:55,649 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 04:24:55,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 04:24:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 04:24:55,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 183. [2020-09-25 04:24:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 04:24:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-09-25 04:24:55,660 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 131 [2020-09-25 04:24:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:55,660 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-09-25 04:24:55,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:24:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-09-25 04:24:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:24:55,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:55,662 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:55,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:24:55,663 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:55,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-09-25 04:24:55,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:55,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515468600] [2020-09-25 04:24:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:58,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:58,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:24:58,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2414 [2020-09-25 04:24:58,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:58,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:24:58,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 04:24:58,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:24:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:58,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:58,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:58,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:58,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 04:24:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:59,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:24:59,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1635 [2020-09-25 04:24:59,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:59,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:24:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:24:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 04:25:00,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515468600] [2020-09-25 04:25:00,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:00,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:25:00,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636092657] [2020-09-25 04:25:00,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:25:00,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:00,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:25:00,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:25:00,289 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 18 states. [2020-09-25 04:25:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:01,564 INFO L93 Difference]: Finished difference Result 286 states and 310 transitions. [2020-09-25 04:25:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 04:25:01,565 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-09-25 04:25:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:01,567 INFO L225 Difference]: With dead ends: 286 [2020-09-25 04:25:01,567 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 04:25:01,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 04:25:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 04:25:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 187. [2020-09-25 04:25:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-25 04:25:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-09-25 04:25:01,584 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 133 [2020-09-25 04:25:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:01,585 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-09-25 04:25:01,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:25:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-09-25 04:25:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 04:25:01,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:01,587 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:01,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:25:01,588 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:01,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2062394754, now seen corresponding path program 1 times [2020-09-25 04:25:01,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:01,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555473310] [2020-09-25 04:25:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:03,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking...