/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=DEEPEST --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 00:58:55,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:55,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:55,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:55,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:55,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:55,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:55,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:55,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:55,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:55,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:55,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:55,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:55,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:55,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:55,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:55,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:55,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:55,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:55,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:55,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:55,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:55,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:55,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:55,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:55,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:55,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:55,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:55,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:55,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:55,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:55,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:55,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:55,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:55,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:55,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:55,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:55,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:55,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:55,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:55,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:55,498 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 00:58:55,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:55,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:55,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:55,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:55,549 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:55,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:55,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:55,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:55,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:55,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:55,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:55,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:55,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:55,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:55,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:55,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:55,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:55,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:55,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:55,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:55,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:55,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:55,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:55,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:55,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:55,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:55,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:55,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:55,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:55,558 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:58:56,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:56,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:56,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:56,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:56,047 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:56,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 00:58:56,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b060c5318/3a5ebd6f443f402397e09276f523043b/FLAG602380dff [2020-09-25 00:58:56,796 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:56,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 00:58:56,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b060c5318/3a5ebd6f443f402397e09276f523043b/FLAG602380dff [2020-09-25 00:58:57,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b060c5318/3a5ebd6f443f402397e09276f523043b [2020-09-25 00:58:57,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:57,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:57,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:57,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:57,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:57,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726a206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57, skipping insertion in model container [2020-09-25 00:58:57,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:57,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:57,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:57,692 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:57,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:57,813 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:57,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57 WrapperNode [2020-09-25 00:58:57,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:57,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:57,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:57,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:57,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:57,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:57,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:57,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:57,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (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 00:58:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 00:58:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 00:58:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 00:58:58,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:58:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:58:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:58:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:58:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:58:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:58:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:58:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:58:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:58:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:58:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:58:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:58:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:58:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:58:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:58:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:58:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:58:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 00:58:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 00:58:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:58:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:58:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:58:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:58:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:58:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:58:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:58:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:58:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:58:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:58:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:58:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:58:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:58:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:58:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:58:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:58:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:58:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:58:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:58:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:58:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:58:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:58:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:58:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:58:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:58:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:58:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:58:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:58:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:58:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:58:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:58:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:58:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:58:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:58:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:58:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:58:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:58:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:58:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 00:58:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:58:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:58:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:58:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:58:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:58:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:58:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:58:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:58:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:58:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:58:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:58:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:58:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:58:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:58:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:58:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:58:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:58:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:58:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:58:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:58:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:58:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:58:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:58:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:58:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:58:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:58:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:58:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:58:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:58:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:58:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:58:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:58:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:58:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:58:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:58:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:58:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:58:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:58:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:58:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:58:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:58:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:58:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:58:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:58:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:58:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:58:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:58:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:58:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 00:58:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:58:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:58:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:58:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:58,436 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 00:58:58,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:58,836 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 00:58:58,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:58 BoogieIcfgContainer [2020-09-25 00:58:58,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:58,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:58,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:58,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:58,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:57" (1/3) ... [2020-09-25 00:58:58,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64262567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:58, skipping insertion in model container [2020-09-25 00:58:58,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (2/3) ... [2020-09-25 00:58:58,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64262567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:58, skipping insertion in model container [2020-09-25 00:58:58,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:58" (3/3) ... [2020-09-25 00:58:58,854 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 00:58:58,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:58,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:58:58,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:58:58,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:58,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:58,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:58,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:58,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:58,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:58,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:58,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 00:58:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 00:58:58,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:58,988 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 00:58:58,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:58,998 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 00:58:59,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:59,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759012107] [2020-09-25 00:58:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:59,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:58:59,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:58:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-09-25 00:58:59,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 00:58:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:59:00,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:00,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:00,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:00,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:00,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:59:00,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:00,044 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 00:59:00,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759012107] [2020-09-25 00:59:00,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:00,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:59:00,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526071995] [2020-09-25 00:59:00,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:59:00,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:59:00,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:59:00,076 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-25 00:59:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:00,452 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-25 00:59:00,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:59:00,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 00:59:00,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:00,468 INFO L225 Difference]: With dead ends: 342 [2020-09-25 00:59:00,469 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 00:59:00,475 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 00:59:00,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 00:59:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-25 00:59:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 00:59:00,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-25 00:59:00,544 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-25 00:59:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:00,545 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-25 00:59:00,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:59:00,545 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-25 00:59:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:59:00,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:00,548 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 00:59:00,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:59:00,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:00,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:00,550 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-25 00:59:00,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:00,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876545186] [2020-09-25 00:59:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:01,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:01,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:59:01,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-25 00:59:01,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:59:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:59:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:59:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:01,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:01,179 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 00:59:01,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876545186] [2020-09-25 00:59:01,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:01,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:59:01,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776168683] [2020-09-25 00:59:01,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:59:01,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:01,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:59:01,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:59:01,184 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 7 states. [2020-09-25 00:59:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:01,643 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2020-09-25 00:59:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:59:01,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-25 00:59:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:01,646 INFO L225 Difference]: With dead ends: 243 [2020-09-25 00:59:01,647 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 00:59:01,648 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 00:59:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 00:59:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 179. [2020-09-25 00:59:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 00:59:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2020-09-25 00:59:01,664 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 41 [2020-09-25 00:59:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:01,665 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2020-09-25 00:59:01,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:59:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2020-09-25 00:59:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:59:01,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:01,668 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] [2020-09-25 00:59:01,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:59:01,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1367895296, now seen corresponding path program 1 times [2020-09-25 00:59:01,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:01,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439732238] [2020-09-25 00:59:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:59:02,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-25 00:59:02,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:59:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:59:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:59:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:02,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:02,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:02,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:02,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:02,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439732238] [2020-09-25 00:59:02,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:02,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:59:02,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59237892] [2020-09-25 00:59:02,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:59:02,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:02,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:59:02,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:59:02,337 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand 7 states. [2020-09-25 00:59:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:02,754 INFO L93 Difference]: Finished difference Result 246 states and 268 transitions. [2020-09-25 00:59:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:59:02,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-25 00:59:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:02,757 INFO L225 Difference]: With dead ends: 246 [2020-09-25 00:59:02,757 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 00:59:02,758 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 00:59:02,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 00:59:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 176. [2020-09-25 00:59:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 00:59:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2020-09-25 00:59:02,770 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 47 [2020-09-25 00:59:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:02,770 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2020-09-25 00:59:02,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:59:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2020-09-25 00:59:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:59:02,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:02,773 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] [2020-09-25 00:59:02,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:59:02,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -331213520, now seen corresponding path program 1 times [2020-09-25 00:59:02,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:02,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072298250] [2020-09-25 00:59:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:03,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:03,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:59:03,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:03,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-25 00:59:03,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:59:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:59:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:59:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:03,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:03,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:03,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:03,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072298250] [2020-09-25 00:59:03,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:03,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:59:03,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181361215] [2020-09-25 00:59:03,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:59:03,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:03,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:59:03,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:59:03,420 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand 7 states. [2020-09-25 00:59:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:03,780 INFO L93 Difference]: Finished difference Result 228 states and 249 transitions. [2020-09-25 00:59:03,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:59:03,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-25 00:59:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:03,784 INFO L225 Difference]: With dead ends: 228 [2020-09-25 00:59:03,784 INFO L226 Difference]: Without dead ends: 204 [2020-09-25 00:59:03,784 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 00:59:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-25 00:59:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 171. [2020-09-25 00:59:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-25 00:59:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 189 transitions. [2020-09-25 00:59:03,796 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 189 transitions. Word has length 47 [2020-09-25 00:59:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:03,796 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 189 transitions. [2020-09-25 00:59:03,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:59:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 189 transitions. [2020-09-25 00:59:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:59:03,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:03,798 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] [2020-09-25 00:59:03,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:59:03,799 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:03,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1290320609, now seen corresponding path program 1 times [2020-09-25 00:59:03,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:03,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206674757] [2020-09-25 00:59:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:06,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:59:06,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-09-25 00:59:06,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:59:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:59:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:59:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:06,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:06,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:06,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:06,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:06,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:06,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206674757] [2020-09-25 00:59:06,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:06,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:59:06,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274485721] [2020-09-25 00:59:06,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:59:06,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:59:06,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:59:06,215 INFO L87 Difference]: Start difference. First operand 171 states and 189 transitions. Second operand 11 states. [2020-09-25 00:59:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:06,914 INFO L93 Difference]: Finished difference Result 252 states and 274 transitions. [2020-09-25 00:59:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:59:06,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-25 00:59:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:06,917 INFO L225 Difference]: With dead ends: 252 [2020-09-25 00:59:06,917 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 00:59:06,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:59:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 00:59:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 190. [2020-09-25 00:59:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 00:59:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2020-09-25 00:59:06,926 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 52 [2020-09-25 00:59:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:06,927 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2020-09-25 00:59:06,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:59:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2020-09-25 00:59:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:59:06,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:06,929 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] [2020-09-25 00:59:06,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:59:06,929 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:06,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1305030225, now seen corresponding path program 1 times [2020-09-25 00:59:06,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:06,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422952393] [2020-09-25 00:59:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:06,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:08,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:08,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:59:08,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:08,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1791 [2020-09-25 00:59:08,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:59:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:59:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:59:08,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:08,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:08,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:59:08,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:08,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:08,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:08,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422952393] [2020-09-25 00:59:08,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:08,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:59:08,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661598221] [2020-09-25 00:59:08,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:59:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:59:08,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:59:08,936 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand 11 states. [2020-09-25 00:59:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:09,697 INFO L93 Difference]: Finished difference Result 268 states and 293 transitions. [2020-09-25 00:59:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:59:09,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-25 00:59:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:09,700 INFO L225 Difference]: With dead ends: 268 [2020-09-25 00:59:09,700 INFO L226 Difference]: Without dead ends: 262 [2020-09-25 00:59:09,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:59:09,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-25 00:59:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2020-09-25 00:59:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 00:59:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 223 transitions. [2020-09-25 00:59:09,711 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 223 transitions. Word has length 52 [2020-09-25 00:59:09,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:09,712 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 223 transitions. [2020-09-25 00:59:09,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:59:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 223 transitions. [2020-09-25 00:59:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:59:09,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:09,713 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] [2020-09-25 00:59:09,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:59:09,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:09,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:09,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1842695, now seen corresponding path program 1 times [2020-09-25 00:59:09,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:09,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197884091] [2020-09-25 00:59:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:13,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:59:14,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:59:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 00:59:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:59:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:59:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 00:59:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:15,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:15,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:59:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:15,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197884091] [2020-09-25 00:59:15,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:15,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:59:15,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507681819] [2020-09-25 00:59:15,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:59:15,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:59:15,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:59:15,039 INFO L87 Difference]: Start difference. First operand 202 states and 223 transitions. Second operand 14 states. [2020-09-25 00:59:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:16,344 INFO L93 Difference]: Finished difference Result 272 states and 297 transitions. [2020-09-25 00:59:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 00:59:16,345 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-09-25 00:59:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:16,348 INFO L225 Difference]: With dead ends: 272 [2020-09-25 00:59:16,348 INFO L226 Difference]: Without dead ends: 266 [2020-09-25 00:59:16,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-09-25 00:59:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-25 00:59:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 216. [2020-09-25 00:59:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-25 00:59:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 239 transitions. [2020-09-25 00:59:16,357 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 239 transitions. Word has length 58 [2020-09-25 00:59:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:16,357 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 239 transitions. [2020-09-25 00:59:16,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:59:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 239 transitions. [2020-09-25 00:59:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:59:16,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:16,359 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] [2020-09-25 00:59:16,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:59:16,359 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1034839081, now seen corresponding path program 1 times [2020-09-25 00:59:16,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:16,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061748464] [2020-09-25 00:59:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:17,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:17,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:59:17,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-25 00:59:17,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:59:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:59:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:59:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:17,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:17,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:17,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:17,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:59:17,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:17,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:17,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061748464] [2020-09-25 00:59:17,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:17,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:59:17,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713857195] [2020-09-25 00:59:17,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:59:17,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:17,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:59:17,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:59:17,753 INFO L87 Difference]: Start difference. First operand 216 states and 239 transitions. Second operand 16 states. [2020-09-25 00:59:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:19,318 INFO L93 Difference]: Finished difference Result 283 states and 309 transitions. [2020-09-25 00:59:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:59:19,319 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-25 00:59:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:19,322 INFO L225 Difference]: With dead ends: 283 [2020-09-25 00:59:19,322 INFO L226 Difference]: Without dead ends: 277 [2020-09-25 00:59:19,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 00:59:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-25 00:59:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 220. [2020-09-25 00:59:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-25 00:59:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 243 transitions. [2020-09-25 00:59:19,332 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 243 transitions. Word has length 58 [2020-09-25 00:59:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:19,332 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 243 transitions. [2020-09-25 00:59:19,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:59:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 243 transitions. [2020-09-25 00:59:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:59:19,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:19,333 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] [2020-09-25 00:59:19,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:59:19,334 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash 218965575, now seen corresponding path program 1 times [2020-09-25 00:59:19,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:19,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192193163] [2020-09-25 00:59:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:20,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:20,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:59:20,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-25 00:59:20,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:59:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:59:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:59:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:59:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:20,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192193163] [2020-09-25 00:59:20,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:20,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:59:20,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082373815] [2020-09-25 00:59:20,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:59:20,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:20,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:59:20,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:59:20,711 INFO L87 Difference]: Start difference. First operand 220 states and 243 transitions. Second operand 16 states. [2020-09-25 00:59:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:22,328 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2020-09-25 00:59:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:59:22,328 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-25 00:59:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:22,333 INFO L225 Difference]: With dead ends: 295 [2020-09-25 00:59:22,333 INFO L226 Difference]: Without dead ends: 289 [2020-09-25 00:59:22,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 00:59:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-25 00:59:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 222. [2020-09-25 00:59:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-25 00:59:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 246 transitions. [2020-09-25 00:59:22,343 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 246 transitions. Word has length 58 [2020-09-25 00:59:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:22,344 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 246 transitions. [2020-09-25 00:59:22,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:59:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 246 transitions. [2020-09-25 00:59:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:59:22,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:22,345 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] [2020-09-25 00:59:22,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:59:22,346 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:22,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:22,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1255647351, now seen corresponding path program 1 times [2020-09-25 00:59:22,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:22,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158858973] [2020-09-25 00:59:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:25,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:25,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:59:25,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:25,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2795 [2020-09-25 00:59:25,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:59:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:59:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:59:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:25,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:25,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:25,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:25,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:25,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:59:25,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:25,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:25,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158858973] [2020-09-25 00:59:25,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:25,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:59:25,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050197314] [2020-09-25 00:59:25,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:59:25,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:25,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:59:25,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:59:25,263 INFO L87 Difference]: Start difference. First operand 222 states and 246 transitions. Second operand 9 states. [2020-09-25 00:59:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:25,880 INFO L93 Difference]: Finished difference Result 287 states and 313 transitions. [2020-09-25 00:59:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:59:25,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-25 00:59:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:25,882 INFO L225 Difference]: With dead ends: 287 [2020-09-25 00:59:25,882 INFO L226 Difference]: Without dead ends: 268 [2020-09-25 00:59:25,883 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 00:59:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-25 00:59:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 222. [2020-09-25 00:59:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-25 00:59:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2020-09-25 00:59:25,891 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 58 [2020-09-25 00:59:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:25,892 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2020-09-25 00:59:25,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:59:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2020-09-25 00:59:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:59:25,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:25,893 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] [2020-09-25 00:59:25,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:59:25,893 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1042030712, now seen corresponding path program 2 times [2020-09-25 00:59:25,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:25,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369048226] [2020-09-25 00:59:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 00:59:28,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3064 [2020-09-25 00:59:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:59:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:59:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 00:59:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:29,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:29,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:29,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:29,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:59:29,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:29,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369048226] [2020-09-25 00:59:29,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:29,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:59:29,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433288477] [2020-09-25 00:59:29,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:59:29,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:59:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:59:29,725 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand 19 states. [2020-09-25 00:59:30,534 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-09-25 00:59:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:32,096 INFO L93 Difference]: Finished difference Result 334 states and 363 transitions. [2020-09-25 00:59:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 00:59:32,098 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-09-25 00:59:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:32,100 INFO L225 Difference]: With dead ends: 334 [2020-09-25 00:59:32,101 INFO L226 Difference]: Without dead ends: 310 [2020-09-25 00:59:32,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 00:59:32,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-25 00:59:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 236. [2020-09-25 00:59:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 00:59:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 259 transitions. [2020-09-25 00:59:32,111 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 259 transitions. Word has length 63 [2020-09-25 00:59:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:32,111 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 259 transitions. [2020-09-25 00:59:32,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:59:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 259 transitions. [2020-09-25 00:59:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:59:32,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:32,113 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] [2020-09-25 00:59:32,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:59:32,113 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:32,114 INFO L82 PathProgramCache]: Analyzing trace with hash 352263162, now seen corresponding path program 1 times [2020-09-25 00:59:32,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:32,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503778157] [2020-09-25 00:59:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:36,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:36,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 00:59:36,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4836 [2020-09-25 00:59:36,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:59:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:59:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 00:59:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:37,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:37,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:37,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:37,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:59:37,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:37,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:37,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503778157] [2020-09-25 00:59:37,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:37,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 00:59:37,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885384918] [2020-09-25 00:59:37,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 00:59:37,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:37,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 00:59:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-09-25 00:59:37,325 INFO L87 Difference]: Start difference. First operand 236 states and 259 transitions. Second operand 20 states. [2020-09-25 00:59:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:38,814 INFO L93 Difference]: Finished difference Result 337 states and 367 transitions. [2020-09-25 00:59:38,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 00:59:38,814 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-09-25 00:59:38,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:38,817 INFO L225 Difference]: With dead ends: 337 [2020-09-25 00:59:38,818 INFO L226 Difference]: Without dead ends: 331 [2020-09-25 00:59:38,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 00:59:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-09-25 00:59:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 247. [2020-09-25 00:59:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-25 00:59:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 271 transitions. [2020-09-25 00:59:38,828 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 271 transitions. Word has length 63 [2020-09-25 00:59:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:38,828 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 271 transitions. [2020-09-25 00:59:38,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 00:59:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 271 transitions. [2020-09-25 00:59:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:59:38,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:38,830 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] [2020-09-25 00:59:38,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 00:59:38,830 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2051879624, now seen corresponding path program 2 times [2020-09-25 00:59:38,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:38,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188967660] [2020-09-25 00:59:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:43,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:43,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 00:59:43,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:59:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4721 [2020-09-25 00:59:43,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:59:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:59:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 00:59:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:44,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:44,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:44,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:59:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:44,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188967660] [2020-09-25 00:59:44,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:44,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 00:59:44,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913855833] [2020-09-25 00:59:44,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 00:59:44,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:44,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 00:59:44,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-09-25 00:59:44,162 INFO L87 Difference]: Start difference. First operand 247 states and 271 transitions. Second operand 20 states.