/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:07:45,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:07:45,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:07:45,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:07:45,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:07:45,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:07:45,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:07:45,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:07:45,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:07:45,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:07:45,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:07:45,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:07:45,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:07:45,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:07:45,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:07:45,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:07:45,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:07:45,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:07:45,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:07:45,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:07:45,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:07:45,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:07:45,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:07:45,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:07:45,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:07:45,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:07:45,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:07:45,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:07:45,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:07:45,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:07:45,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:07:45,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:07:45,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:07:45,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:07:45,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:07:45,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:07:45,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:07:45,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:07:45,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:07:45,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:07:45,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:07:45,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:07:45,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:07:45,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:07:45,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:07:45,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:07:45,693 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:07:45,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:07:45,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:07:45,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:07:45,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:07:45,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:07:45,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:07:45,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:07:45,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:07:45,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:07:45,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:07:45,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:07:45,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:07:45,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:07:45,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:07:45,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:07:45,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:07:45,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:45,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:07:45,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:07:45,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:07:45,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:07:45,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:07:45,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:07:45,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:07:45,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:07:46,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:07:46,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:07:46,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:07:46,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:07:46,209 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:07:46,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 02:07:46,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72af10856/f546ffc7334b48d48c9b73e57bd76828/FLAGed2650aff [2020-09-25 02:07:47,002 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:07:47,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 02:07:47,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72af10856/f546ffc7334b48d48c9b73e57bd76828/FLAGed2650aff [2020-09-25 02:07:47,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72af10856/f546ffc7334b48d48c9b73e57bd76828 [2020-09-25 02:07:47,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:07:47,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:07:47,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:47,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:07:47,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:07:47,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4d3d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47, skipping insertion in model container [2020-09-25 02:07:47,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:07:47,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:07:47,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:47,785 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:07:47,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:47,899 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:07:47,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47 WrapperNode [2020-09-25 02:07:47,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:47,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:07:47,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:07:47,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:07:47,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:47,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... [2020-09-25 02:07:48,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:07:48,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:07:48,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:07:48,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:07:48,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:07:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:07:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 02:07:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 02:07:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 02:07:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:07:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:07:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:07:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:07:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:07:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:07:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:07:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:07:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:07:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:07:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:07:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:07:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:07:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:07:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:07:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:07:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:07:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:07:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:07:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 02:07:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 02:07:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:07:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:07:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:07:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:07:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:07:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:07:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:07:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:07:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:07:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:07:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:07:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:07:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:07:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:07:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:07:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:07:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:07:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:07:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:07:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:07:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:07:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:07:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:07:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:07:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:07:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:07:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:07:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:07:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:07:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:07:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:07:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:07:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:07:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:07:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:07:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:07:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:07:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:07:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 02:07:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:07:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:07:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:07:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:07:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:07:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:07:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:07:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:07:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:07:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:07:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:07:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:07:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:07:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:07:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:07:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:07:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:07:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:07:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:07:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:07:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:07:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:07:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:07:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:07:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:07:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:07:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:07:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:07:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:07:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:07:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:07:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:07:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:07:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:07:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:07:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:07:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:07:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:07:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:07:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:07:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:07:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:07:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:07:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:07:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:07:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:07:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:07:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:07:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 02:07:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:07:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:07:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:07:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:07:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:07:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:07:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:07:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:07:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:07:48,483 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 02:07:48,882 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:07:48,882 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 02:07:48,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:48 BoogieIcfgContainer [2020-09-25 02:07:48,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:07:48,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:07:48,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:07:48,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:07:48,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:07:47" (1/3) ... [2020-09-25 02:07:48,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3dc857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:48, skipping insertion in model container [2020-09-25 02:07:48,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:47" (2/3) ... [2020-09-25 02:07:48,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3dc857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:48, skipping insertion in model container [2020-09-25 02:07:48,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:48" (3/3) ... [2020-09-25 02:07:48,901 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 02:07:48,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:07:48,925 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:07:48,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:07:48,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:07:48,992 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:07:48,992 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:07:49,001 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:07:49,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:07:49,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:07:49,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:07:49,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:07:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 02:07:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 02:07:49,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:49,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:49,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:49,073 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 02:07:49,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:49,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679694872] [2020-09-25 02:07:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:50,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:07:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:07:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-09-25 02:07:50,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 02:07:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:07:50,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:50,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:50,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:50,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:07:50,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:50,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:50,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679694872] [2020-09-25 02:07:50,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:50,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:07:50,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645859772] [2020-09-25 02:07:50,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:07:50,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:50,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:07:50,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:07:50,359 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-25 02:07:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:50,781 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-25 02:07:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:07:50,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 02:07:50,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:50,798 INFO L225 Difference]: With dead ends: 342 [2020-09-25 02:07:50,799 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 02:07:50,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:07:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 02:07:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-25 02:07:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 02:07:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-25 02:07:50,873 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-25 02:07:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:50,873 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-25 02:07:50,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:07:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-25 02:07:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 02:07:50,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:50,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:50,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:07:50,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:50,879 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-25 02:07:50,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:50,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812789903] [2020-09-25 02:07:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:51,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:07:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-09-25 02:07:51,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:07:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:07:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:07:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:51,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:51,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:51,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:07:51,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:07:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:51,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812789903] [2020-09-25 02:07:51,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:51,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:07:51,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992519395] [2020-09-25 02:07:51,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:07:51,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:07:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:07:51,559 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 5 states. [2020-09-25 02:07:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:51,999 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-09-25 02:07:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:07:52,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-25 02:07:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:52,005 INFO L225 Difference]: With dead ends: 251 [2020-09-25 02:07:52,006 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 02:07:52,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:07:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 02:07:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 02:07:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 02:07:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 02:07:52,057 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 41 [2020-09-25 02:07:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:52,059 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 02:07:52,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:07:52,059 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 02:07:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:07:52,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:52,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:52,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:07:52,070 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:52,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:52,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 02:07:52,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:52,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935391585] [2020-09-25 02:07:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:53,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:53,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:07:53,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:07:53,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-09-25 02:07:53,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:07:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 02:07:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:07:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:53,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:07:53,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:53,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:53,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935391585] [2020-09-25 02:07:53,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:53,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:07:53,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276676857] [2020-09-25 02:07:53,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:07:53,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:53,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:07:53,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:53,115 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-09-25 02:07:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:53,421 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-09-25 02:07:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:07:53,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 02:07:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:53,425 INFO L225 Difference]: With dead ends: 321 [2020-09-25 02:07:53,425 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 02:07:53,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 02:07:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-25 02:07:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 02:07:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-09-25 02:07:53,458 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-09-25 02:07:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:53,459 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-09-25 02:07:53,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:07:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-09-25 02:07:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 02:07:53,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:53,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:53,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:07:53,463 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:53,469 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-09-25 02:07:53,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:53,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290088476] [2020-09-25 02:07:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:53,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:53,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 02:07:53,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 02:07:53,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:07:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:07:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:07:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:53,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:53,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:53,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:53,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:53,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:07:53,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:07:53,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290088476] [2020-09-25 02:07:53,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:53,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:07:53,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721920764] [2020-09-25 02:07:53,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:07:53,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:53,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:07:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:07:53,836 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-09-25 02:07:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:54,327 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-09-25 02:07:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:07:54,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 02:07:54,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:54,336 INFO L225 Difference]: With dead ends: 279 [2020-09-25 02:07:54,336 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 02:07:54,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:07:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 02:07:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-09-25 02:07:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-25 02:07:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-09-25 02:07:54,369 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-09-25 02:07:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:54,370 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-09-25 02:07:54,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:07:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-09-25 02:07:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 02:07:54,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:54,374 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:54,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:07:54,375 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:54,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:54,375 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-09-25 02:07:54,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:54,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856565120] [2020-09-25 02:07:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:54,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:54,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:07:54,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:54,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 02:07:54,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:07:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:07:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:07:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:54,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:54,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:07:54,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:07:54,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856565120] [2020-09-25 02:07:54,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:54,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:07:54,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358150301] [2020-09-25 02:07:54,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:07:54,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:54,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:07:54,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:07:54,721 INFO L87 Difference]: Start difference. First operand 215 states and 240 transitions. Second operand 7 states. [2020-09-25 02:07:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:55,139 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2020-09-25 02:07:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:07:55,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 02:07:55,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:55,143 INFO L225 Difference]: With dead ends: 282 [2020-09-25 02:07:55,143 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 02:07:55,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:07:55,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 02:07:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 212. [2020-09-25 02:07:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 02:07:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2020-09-25 02:07:55,156 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 62 [2020-09-25 02:07:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:55,156 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2020-09-25 02:07:55,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:07:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2020-09-25 02:07:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 02:07:55,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:55,159 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:55,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:07:55,160 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:55,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:55,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-25 02:07:55,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:55,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144130701] [2020-09-25 02:07:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:55,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:55,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:07:55,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 02:07:55,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:07:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:07:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:07:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:55,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:55,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:07:55,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:07:55,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144130701] [2020-09-25 02:07:55,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:55,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:07:55,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298494686] [2020-09-25 02:07:55,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:07:55,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:55,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:07:55,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:07:55,527 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand 7 states. [2020-09-25 02:07:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:55,969 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-25 02:07:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:07:55,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 02:07:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:55,973 INFO L225 Difference]: With dead ends: 264 [2020-09-25 02:07:55,973 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 02:07:55,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:07:55,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 02:07:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2020-09-25 02:07:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 02:07:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2020-09-25 02:07:55,989 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 62 [2020-09-25 02:07:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:55,989 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2020-09-25 02:07:55,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:07:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2020-09-25 02:07:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 02:07:55,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:55,991 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:55,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:07:55,992 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-25 02:07:55,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:55,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014090577] [2020-09-25 02:07:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:57,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:07:57,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1569 [2020-09-25 02:07:57,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:07:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:07:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:07:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:58,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:07:58,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014090577] [2020-09-25 02:07:58,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:58,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:07:58,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869217640] [2020-09-25 02:07:58,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:07:58,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:58,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:07:58,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:07:58,027 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand 15 states. [2020-09-25 02:07:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:59,358 INFO L93 Difference]: Finished difference Result 302 states and 330 transitions. [2020-09-25 02:07:59,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:07:59,359 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-09-25 02:07:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:59,361 INFO L225 Difference]: With dead ends: 302 [2020-09-25 02:07:59,361 INFO L226 Difference]: Without dead ends: 289 [2020-09-25 02:07:59,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:07:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-25 02:07:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 223. [2020-09-25 02:07:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-25 02:07:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 247 transitions. [2020-09-25 02:07:59,370 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 247 transitions. Word has length 67 [2020-09-25 02:07:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:59,371 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 247 transitions. [2020-09-25 02:07:59,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:07:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 247 transitions. [2020-09-25 02:07:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 02:07:59,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:59,372 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:59,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:07:59,373 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-25 02:07:59,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:59,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002237296] [2020-09-25 02:07:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:08:00,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-25 02:08:00,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:08:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:08:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:08:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:00,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:00,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:00,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002237296] [2020-09-25 02:08:00,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:00,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:08:00,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810622750] [2020-09-25 02:08:00,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:08:00,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:08:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:08:00,607 INFO L87 Difference]: Start difference. First operand 223 states and 247 transitions. Second operand 11 states. [2020-09-25 02:08:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:01,316 INFO L93 Difference]: Finished difference Result 301 states and 330 transitions. [2020-09-25 02:08:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:08:01,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 02:08:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:01,319 INFO L225 Difference]: With dead ends: 301 [2020-09-25 02:08:01,319 INFO L226 Difference]: Without dead ends: 295 [2020-09-25 02:08:01,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:08:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-25 02:08:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 245. [2020-09-25 02:08:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 02:08:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2020-09-25 02:08:01,329 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 67 [2020-09-25 02:08:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:01,330 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2020-09-25 02:08:01,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:08:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2020-09-25 02:08:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 02:08:01,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:01,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:01,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:08:01,332 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-25 02:08:01,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:01,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339158407] [2020-09-25 02:08:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:02,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:02,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 02:08:02,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:02,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-09-25 02:08:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:08:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:08:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:02,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339158407] [2020-09-25 02:08:02,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:02,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:08:02,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554783447] [2020-09-25 02:08:02,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:08:02,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:02,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:08:02,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:08:02,644 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand 16 states. [2020-09-25 02:08:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:03,932 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2020-09-25 02:08:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 02:08:03,933 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 02:08:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:03,937 INFO L225 Difference]: With dead ends: 310 [2020-09-25 02:08:03,937 INFO L226 Difference]: Without dead ends: 304 [2020-09-25 02:08:03,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:08:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-25 02:08:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 249. [2020-09-25 02:08:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 02:08:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2020-09-25 02:08:03,947 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 73 [2020-09-25 02:08:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:03,948 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2020-09-25 02:08:03,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:08:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2020-09-25 02:08:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 02:08:03,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:03,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:03,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:08:03,949 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-25 02:08:03,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:03,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518074045] [2020-09-25 02:08:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:04,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:04,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 02:08:04,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-09-25 02:08:04,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:08:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:08:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:05,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:05,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:05,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518074045] [2020-09-25 02:08:05,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:05,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:08:05,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914577951] [2020-09-25 02:08:05,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:08:05,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:05,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:08:05,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:08:05,077 INFO L87 Difference]: Start difference. First operand 249 states and 276 transitions. Second operand 16 states. [2020-09-25 02:08:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:06,533 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2020-09-25 02:08:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 02:08:06,534 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 02:08:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:06,536 INFO L225 Difference]: With dead ends: 324 [2020-09-25 02:08:06,536 INFO L226 Difference]: Without dead ends: 318 [2020-09-25 02:08:06,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:08:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-09-25 02:08:06,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-09-25 02:08:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 02:08:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 286 transitions. [2020-09-25 02:08:06,549 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 286 transitions. Word has length 73 [2020-09-25 02:08:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:06,549 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 286 transitions. [2020-09-25 02:08:06,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:08:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 286 transitions. [2020-09-25 02:08:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 02:08:06,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:06,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:06,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:08:06,552 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:06,552 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-25 02:08:06,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:06,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127804700] [2020-09-25 02:08:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 02:08:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1312 [2020-09-25 02:08:07,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:08:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:08:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 02:08:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:07,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:07,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:07,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:07,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:07,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:07,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:08,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127804700] [2020-09-25 02:08:08,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:08,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:08:08,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994405286] [2020-09-25 02:08:08,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:08:08,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:08:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:08:08,008 INFO L87 Difference]: Start difference. First operand 258 states and 286 transitions. Second operand 9 states. [2020-09-25 02:08:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:08,562 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2020-09-25 02:08:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:08:08,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 02:08:08,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:08,564 INFO L225 Difference]: With dead ends: 316 [2020-09-25 02:08:08,564 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 02:08:08,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:08:08,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 02:08:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 258. [2020-09-25 02:08:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 02:08:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 285 transitions. [2020-09-25 02:08:08,584 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 285 transitions. Word has length 73 [2020-09-25 02:08:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:08,585 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 285 transitions. [2020-09-25 02:08:08,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:08:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 285 transitions. [2020-09-25 02:08:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 02:08:08,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:08,586 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:08,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:08:08,587 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:08,587 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-25 02:08:08,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:08,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135756987] [2020-09-25 02:08:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:08:11,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2729 [2020-09-25 02:08:11,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:08:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:08:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:11,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:11,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:11,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135756987] [2020-09-25 02:08:11,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:11,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:08:11,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57001122] [2020-09-25 02:08:11,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:08:11,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:11,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:08:11,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:08:11,701 INFO L87 Difference]: Start difference. First operand 258 states and 285 transitions. Second operand 20 states. [2020-09-25 02:08:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:13,020 INFO L93 Difference]: Finished difference Result 328 states and 359 transitions. [2020-09-25 02:08:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 02:08:13,021 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-09-25 02:08:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:13,023 INFO L225 Difference]: With dead ends: 328 [2020-09-25 02:08:13,024 INFO L226 Difference]: Without dead ends: 315 [2020-09-25 02:08:13,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 02:08:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-25 02:08:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 274. [2020-09-25 02:08:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 02:08:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2020-09-25 02:08:13,035 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 78 [2020-09-25 02:08:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:13,035 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2020-09-25 02:08:13,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:08:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2020-09-25 02:08:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 02:08:13,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:13,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:13,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:08:13,037 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-25 02:08:13,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:13,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172333668] [2020-09-25 02:08:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:16,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:08:16,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:16,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3574 [2020-09-25 02:08:16,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:08:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 02:08:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:17,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:17,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:17,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:17,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:17,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172333668] [2020-09-25 02:08:17,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:17,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:08:17,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202762908] [2020-09-25 02:08:17,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:08:17,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:08:17,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:08:17,139 INFO L87 Difference]: Start difference. First operand 274 states and 302 transitions. Second operand 20 states. [2020-09-25 02:08:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:19,265 INFO L93 Difference]: Finished difference Result 370 states and 404 transitions. [2020-09-25 02:08:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 02:08:19,266 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-09-25 02:08:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:19,269 INFO L225 Difference]: With dead ends: 370 [2020-09-25 02:08:19,269 INFO L226 Difference]: Without dead ends: 364 [2020-09-25 02:08:19,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=349, Invalid=1457, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 02:08:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-25 02:08:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 288. [2020-09-25 02:08:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-09-25 02:08:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 317 transitions. [2020-09-25 02:08:19,281 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 317 transitions. Word has length 78 [2020-09-25 02:08:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:19,282 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 317 transitions. [2020-09-25 02:08:19,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:08:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 317 transitions. [2020-09-25 02:08:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 02:08:19,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:19,283 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:19,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 02:08:19,284 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash -858452193, now seen corresponding path program 2 times [2020-09-25 02:08:19,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:19,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637646067] [2020-09-25 02:08:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:21,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:21,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:08:21,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2370 [2020-09-25 02:08:21,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:08:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 02:08:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:22,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:08:22,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:22,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637646067] [2020-09-25 02:08:22,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:22,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:08:22,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212423827] [2020-09-25 02:08:22,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:08:22,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:22,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:08:22,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:08:22,063 INFO L87 Difference]: Start difference. First operand 288 states and 317 transitions. Second operand 20 states. [2020-09-25 02:08:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:23,676 INFO L93 Difference]: Finished difference Result 383 states and 419 transitions. [2020-09-25 02:08:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 02:08:23,677 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-09-25 02:08:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:23,679 INFO L225 Difference]: With dead ends: 383 [2020-09-25 02:08:23,679 INFO L226 Difference]: Without dead ends: 377 [2020-09-25 02:08:23,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 02:08:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-25 02:08:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 290. [2020-09-25 02:08:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-09-25 02:08:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 320 transitions. [2020-09-25 02:08:23,694 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 320 transitions. Word has length 78 [2020-09-25 02:08:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:23,694 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 320 transitions. [2020-09-25 02:08:23,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:08:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 320 transitions. [2020-09-25 02:08:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 02:08:23,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:23,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:23,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 02:08:23,699 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:23,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:23,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-25 02:08:23,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:23,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667154932] [2020-09-25 02:08:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:24,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 02:08:24,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-09-25 02:08:24,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:08:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:08:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:24,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:24,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:24,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:24,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667154932] [2020-09-25 02:08:24,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:24,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:08:24,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493424614] [2020-09-25 02:08:24,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:08:24,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:24,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:08:24,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:08:24,767 INFO L87 Difference]: Start difference. First operand 290 states and 320 transitions. Second operand 16 states. [2020-09-25 02:08:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:26,126 INFO L93 Difference]: Finished difference Result 356 states and 389 transitions. [2020-09-25 02:08:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 02:08:26,127 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 02:08:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:26,129 INFO L225 Difference]: With dead ends: 356 [2020-09-25 02:08:26,129 INFO L226 Difference]: Without dead ends: 341 [2020-09-25 02:08:26,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 02:08:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-09-25 02:08:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-09-25 02:08:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-09-25 02:08:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 320 transitions. [2020-09-25 02:08:26,140 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 320 transitions. Word has length 79 [2020-09-25 02:08:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:26,141 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 320 transitions. [2020-09-25 02:08:26,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:08:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 320 transitions. [2020-09-25 02:08:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 02:08:26,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:26,142 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:26,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 02:08:26,143 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:26,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:26,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-25 02:08:26,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:26,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258232624] [2020-09-25 02:08:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:26,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:26,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 02:08:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-25 02:08:26,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:08:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:08:26,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:27,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:27,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:08:27,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:27,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258232624] [2020-09-25 02:08:27,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:27,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:08:27,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494212008] [2020-09-25 02:08:27,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:08:27,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:27,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:08:27,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:08:27,157 INFO L87 Difference]: Start difference. First operand 290 states and 320 transitions. Second operand 16 states. [2020-09-25 02:08:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:28,442 INFO L93 Difference]: Finished difference Result 336 states and 368 transitions. [2020-09-25 02:08:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 02:08:28,442 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 02:08:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:28,443 INFO L225 Difference]: With dead ends: 336 [2020-09-25 02:08:28,444 INFO L226 Difference]: Without dead ends: 306 [2020-09-25 02:08:28,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 02:08:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-25 02:08:28,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 281. [2020-09-25 02:08:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-25 02:08:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 310 transitions. [2020-09-25 02:08:28,458 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 310 transitions. Word has length 79 [2020-09-25 02:08:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:28,458 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 310 transitions. [2020-09-25 02:08:28,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:08:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 310 transitions. [2020-09-25 02:08:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 02:08:28,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:28,460 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:28,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 02:08:28,461 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-25 02:08:28,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:28,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176093473] [2020-09-25 02:08:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:29,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:29,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 02:08:29,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:29,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-09-25 02:08:29,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:08:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:08:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:29,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:29,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:29,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176093473] [2020-09-25 02:08:29,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:29,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:08:29,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417247016] [2020-09-25 02:08:29,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:08:29,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:08:29,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:08:29,461 INFO L87 Difference]: Start difference. First operand 281 states and 310 transitions. Second operand 16 states. [2020-09-25 02:08:30,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:30,776 INFO L93 Difference]: Finished difference Result 328 states and 358 transitions. [2020-09-25 02:08:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:08:30,776 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 02:08:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:30,778 INFO L225 Difference]: With dead ends: 328 [2020-09-25 02:08:30,778 INFO L226 Difference]: Without dead ends: 302 [2020-09-25 02:08:30,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 02:08:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-25 02:08:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 269. [2020-09-25 02:08:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-09-25 02:08:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 297 transitions. [2020-09-25 02:08:30,787 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 297 transitions. Word has length 79 [2020-09-25 02:08:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:30,787 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 297 transitions. [2020-09-25 02:08:30,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:08:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 297 transitions. [2020-09-25 02:08:30,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 02:08:30,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:30,789 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:30,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 02:08:30,789 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:30,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:30,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1822413145, now seen corresponding path program 3 times [2020-09-25 02:08:30,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:30,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465173117] [2020-09-25 02:08:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:32,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:32,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 02:08:32,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-09-25 02:08:32,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:08:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 02:08:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:32,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:32,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:32,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:32,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:32,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465173117] [2020-09-25 02:08:32,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:32,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 02:08:32,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840941179] [2020-09-25 02:08:32,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 02:08:32,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:32,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 02:08:32,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-09-25 02:08:32,633 INFO L87 Difference]: Start difference. First operand 269 states and 297 transitions. Second operand 22 states.