/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:36:15,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:36:15,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:36:15,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:36:15,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:36:15,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:36:15,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:36:15,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:36:15,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:36:15,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:36:15,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:36:15,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:36:15,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:36:15,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:36:15,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:36:15,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:36:15,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:36:15,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:36:15,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:36:15,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:36:15,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:36:15,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:36:15,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:36:15,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:36:15,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:36:15,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:36:15,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:36:15,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:36:15,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:36:15,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:36:15,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:36:15,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:36:15,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:36:15,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:36:15,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:36:15,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:36:15,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:36:15,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:36:15,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:36:15,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:36:15,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:36:15,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:36:15,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:36:15,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:36:15,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:36:15,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:36:15,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:36:15,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:36:15,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:36:15,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:36:15,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:36:15,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:36:15,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:36:15,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:36:15,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:36:15,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:36:15,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:36:15,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:36:15,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:36:15,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:36:15,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:36:15,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:36:15,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:36:15,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:36:15,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:36:15,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:36:15,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:36:15,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:36:15,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:36:15,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:36:15,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:36:15,960 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:36:16,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:36:16,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:36:16,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:36:16,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:36:16,287 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:36:16,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-14 23:36:16,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56cb0c391/fd1c1ae48c6d4258a9d8dacced0e8f39/FLAGa23494134 [2020-10-14 23:36:16,933 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:36:16,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-14 23:36:16,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56cb0c391/fd1c1ae48c6d4258a9d8dacced0e8f39/FLAGa23494134 [2020-10-14 23:36:17,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56cb0c391/fd1c1ae48c6d4258a9d8dacced0e8f39 [2020-10-14 23:36:17,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:36:17,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:36:17,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:36:17,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:36:17,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:36:17,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2462f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17, skipping insertion in model container [2020-10-14 23:36:17,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:36:17,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:36:17,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:36:17,786 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:36:17,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:36:17,889 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:36:17,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17 WrapperNode [2020-10-14 23:36:17,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:36:17,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:36:17,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:36:17,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:36:17,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2020-10-14 23:36:17,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:36:17,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:36:17,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:36:17,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:36:17,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:36:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:36:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:36:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:36:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:36:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:36:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:36:18,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-14 23:36:18,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-14 23:36:18,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2020-10-14 23:36:18,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:36:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:36:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:36:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:36:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:36:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:36:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:36:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:36:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:36:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:36:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:36:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:36:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:36:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:36:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:36:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:36:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:36:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:36:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:36:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:36:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:36:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:36:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:36:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:36:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:36:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:36:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:36:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:36:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:36:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:36:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:36:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:36:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:36:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:36:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:36:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:36:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:36:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:36:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:36:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:36:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:36:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:36:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:36:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:36:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:36:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:36:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:36:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:36:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:36:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:36:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:36:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:36:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:36:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:36:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:36:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:36:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:36:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:36:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:36:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:36:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:36:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:36:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:36:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:36:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:36:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:36:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:36:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:36:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:36:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:36:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:36:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:36:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:36:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:36:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:36:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:36:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:36:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:36:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:36:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:36:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:36:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:36:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:36:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:36:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:36:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:36:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:36:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:36:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:36:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:36:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:36:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:36:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:36:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:36:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:36:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:36:18,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:36:18,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:36:18,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:36:18,052 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-14 23:36:18,052 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-14 23:36:18,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:36:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:36:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2020-10-14 23:36:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:36:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:36:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:36:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:36:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:36:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:36:18,512 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:36:18,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:36:18,683 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:36:18,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:18 BoogieIcfgContainer [2020-10-14 23:36:18,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:36:18,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:36:18,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:36:18,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:36:18,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:17" (1/3) ... [2020-10-14 23:36:18,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b88fc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:18, skipping insertion in model container [2020-10-14 23:36:18,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (2/3) ... [2020-10-14 23:36:18,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b88fc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:18, skipping insertion in model container [2020-10-14 23:36:18,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:18" (3/3) ... [2020-10-14 23:36:18,696 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2020-10-14 23:36:18,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:36:18,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:36:18,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:36:18,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:36:18,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:36:18,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:36:18,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:36:18,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:36:18,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:36:18,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:36:18,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:36:18,778 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-14 23:36:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:36:18,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:18,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:18,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:18,795 INFO L82 PathProgramCache]: Analyzing trace with hash -301799002, now seen corresponding path program 1 times [2020-10-14 23:36:18,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:18,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608738768] [2020-10-14 23:36:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:19,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:36:19,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:19,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-14 23:36:19,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:19,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 23:36:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:19,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:36:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:19,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:19,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:36:19,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:19,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:19,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:19,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:36:19,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:19,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:19,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:19,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:19,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:19,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:19,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 23:36:19,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:19,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:19,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:19,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:19,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:19,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:36:19,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:19,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:36:19,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608738768] [2020-10-14 23:36:19,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:36:19,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:36:19,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938481011] [2020-10-14 23:36:19,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:36:19,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:19,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:36:19,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:36:19,661 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-14 23:36:19,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:19,878 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-10-14 23:36:19,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:36:19,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 23:36:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:19,890 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:36:19,891 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 23:36:19,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:36:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 23:36:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-14 23:36:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:36:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-14 23:36:19,941 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2020-10-14 23:36:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:19,943 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-14 23:36:19,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:36:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-14 23:36:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:36:19,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:19,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:19,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:36:19,947 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:19,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1245592506, now seen corresponding path program 1 times [2020-10-14 23:36:19,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:19,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76516017] [2020-10-14 23:36:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:24,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:24,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:36:24,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4310 [2020-10-14 23:36:24,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:24,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:36:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:36:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:24,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:24,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:24,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:36:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:24,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:24,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:24,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:24,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 23:36:24,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:24,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:24,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:24,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:36:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:24,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:36:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:25,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:25,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-14 23:36:25,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:25,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:36:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:25,926 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-14 23:36:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:26,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:26,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 23:36:26,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:26,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:26,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:26,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76516017] [2020-10-14 23:36:26,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:26,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:36:26,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252848803] [2020-10-14 23:36:26,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:36:26,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:26,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:36:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:36:26,319 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 21 states. [2020-10-14 23:36:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:28,193 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-10-14 23:36:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:36:28,194 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-10-14 23:36:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:28,198 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:36:28,198 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 23:36:28,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:36:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 23:36:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-14 23:36:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:36:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-14 23:36:28,212 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 36 [2020-10-14 23:36:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:28,213 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-14 23:36:28,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:36:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-14 23:36:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:36:28,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:28,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:28,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:36:28,216 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:28,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:28,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1069657988, now seen corresponding path program 1 times [2020-10-14 23:36:28,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:28,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239148755] [2020-10-14 23:36:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:28,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:31,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:31,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:36:31,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:31,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3305 [2020-10-14 23:36:31,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:31,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:36:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:36:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:31,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:31,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:31,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:31,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:31,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:31,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:31,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:31,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:31,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 23:36:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:31,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:31,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:31,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:31,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:36:31,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:31,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:32,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:32,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:32,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-14 23:36:32,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:32,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:32,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:32,966 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-10-14 23:36:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:33,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:33,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:33,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:36:33,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:33,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:33,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239148755] [2020-10-14 23:36:33,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:33,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:36:33,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360678033] [2020-10-14 23:36:33,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:36:33,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:36:33,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:36:33,283 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 22 states. [2020-10-14 23:36:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:34,824 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-10-14 23:36:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:36:34,825 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2020-10-14 23:36:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:34,827 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:36:34,827 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:36:34,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:36:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:36:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-10-14 23:36:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:36:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-14 23:36:34,840 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-10-14 23:36:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:34,840 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-14 23:36:34,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:36:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-14 23:36:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:36:34,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:34,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:34,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:36:34,843 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash -676630978, now seen corresponding path program 1 times [2020-10-14 23:36:34,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:34,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268208134] [2020-10-14 23:36:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:35,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:36,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:36:36,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2094 [2020-10-14 23:36:36,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:36,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:36:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:36:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:37,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:36:37,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:37,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 23:36:37,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:37,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:37,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:36:37,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:37,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 23:36:37,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:36:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:37,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:36:37,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:37,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268208134] [2020-10-14 23:36:37,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:37,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:36:37,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474060677] [2020-10-14 23:36:37,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:36:37,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:37,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:36:37,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:36:37,737 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 18 states. [2020-10-14 23:36:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:39,283 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2020-10-14 23:36:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:36:39,284 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-10-14 23:36:39,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:39,286 INFO L225 Difference]: With dead ends: 90 [2020-10-14 23:36:39,286 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 23:36:39,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:36:39,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 23:36:39,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 23:36:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:36:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-14 23:36:39,298 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-10-14 23:36:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:39,298 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-14 23:36:39,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:36:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-14 23:36:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:36:39,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:39,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:39,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:36:39,300 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:39,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1200382480, now seen corresponding path program 1 times [2020-10-14 23:36:39,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:39,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780320364] [2020-10-14 23:36:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:41,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:36:41,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-14 23:36:41,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:41,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:36:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:36:41,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:41,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:41,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:41,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:41,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:41,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:41,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:42,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:42,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:42,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:42,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 23:36:42,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:42,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:36:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:36:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:42,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:36:42,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:42,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:36:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:43,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-14 23:36:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:43,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:43,594 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2020-10-14 23:36:44,206 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2020-10-14 23:36:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:44,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:44,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:44,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 23:36:44,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:44,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:44,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:44,840 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2020-10-14 23:36:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:44,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780320364] [2020-10-14 23:36:44,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:44,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:36:44,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434111030] [2020-10-14 23:36:44,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:36:44,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:44,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:36:44,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:36:44,864 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 23 states. [2020-10-14 23:36:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:47,527 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-14 23:36:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:36:47,528 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 40 [2020-10-14 23:36:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:47,529 INFO L225 Difference]: With dead ends: 66 [2020-10-14 23:36:47,530 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:36:47,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:36:47,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:36:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-14 23:36:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:36:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-14 23:36:47,551 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 40 [2020-10-14 23:36:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:47,552 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-14 23:36:47,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:36:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-14 23:36:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:36:47,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:47,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-10-14 23:36:47,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:36:47,556 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:47,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2128308850, now seen corresponding path program 1 times [2020-10-14 23:36:47,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:47,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831235238] [2020-10-14 23:36:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:47,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:50,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:50,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:36:50,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:50,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2889 [2020-10-14 23:36:50,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:50,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:36:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:36:50,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:50,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:50,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:50,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:50,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:50,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:50,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:50,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 23:36:50,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:50,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:36:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:51,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:51,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:51,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:36:51,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:51,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:51,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:51,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:51,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:36:51,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:51,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:51,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:51,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:51,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-14 23:36:51,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:51,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:36:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:52,008 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-14 23:36:52,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:52,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:52,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 23:36:52,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:52,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:36:52,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831235238] [2020-10-14 23:36:52,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:52,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:36:52,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655028028] [2020-10-14 23:36:52,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:36:52,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:52,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:36:52,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:36:52,387 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 26 states. [2020-10-14 23:36:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:54,013 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-14 23:36:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:36:54,015 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2020-10-14 23:36:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:54,016 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:36:54,016 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:36:54,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:36:54,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:36:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-14 23:36:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:36:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-14 23:36:54,042 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 46 [2020-10-14 23:36:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:54,045 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-14 23:36:54,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:36:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-14 23:36:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:36:54,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:54,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:54,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:36:54,047 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash 698188390, now seen corresponding path program 1 times [2020-10-14 23:36:54,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:54,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089311820] [2020-10-14 23:36:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:54,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:54,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:36:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 23:36:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:54,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:36:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:54,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:36:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:54,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:54,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:36:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:54,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:36:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:54,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:54,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:54,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:54,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:36:54,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:54,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:54,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:54,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:54,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:54,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:54,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:36:54,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:54,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:36:54,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:54,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:54,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:54,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:54,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:36:54,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:54,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:54,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:36:54,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089311820] [2020-10-14 23:36:54,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:36:54,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:36:54,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453371533] [2020-10-14 23:36:54,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:36:54,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:54,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:36:54,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:36:54,460 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 7 states. [2020-10-14 23:36:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:54,671 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-10-14 23:36:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:36:54,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-14 23:36:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:54,673 INFO L225 Difference]: With dead ends: 80 [2020-10-14 23:36:54,674 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:36:54,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:36:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:36:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-14 23:36:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:36:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-14 23:36:54,681 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 43 [2020-10-14 23:36:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:54,682 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-14 23:36:54,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:36:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-14 23:36:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:36:54,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:54,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2020-10-14 23:36:54,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:36:54,684 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:54,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:54,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2140293592, now seen corresponding path program 1 times [2020-10-14 23:36:54,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:54,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445929624] [2020-10-14 23:36:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:59,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4790 [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:36:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:59,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:59,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:59,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:59,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:59,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:59,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:59,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:59,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:59,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:59,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:00,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:00,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:37:00,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:00,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 23:37:00,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:00,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:37:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:37:00,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:00,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:00,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:00,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:00,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:37:00,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:00,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:37:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:00,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:00,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:37:00,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:00,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:00,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:37:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:01,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:37:01,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-14 23:37:01,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:01,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:37:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:37:01,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0