/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-sorted-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:24:20,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:24:20,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:24:20,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:24:20,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:24:20,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:24:20,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:24:20,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:24:20,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:24:20,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:24:20,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:24:20,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:24:20,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:24:20,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:24:20,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:24:20,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:24:20,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:24:20,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:24:20,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:24:20,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:24:20,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:24:20,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:24:20,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:24:20,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:24:20,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:24:20,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:24:20,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:24:20,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:24:20,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:24:20,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:24:20,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:24:20,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:24:20,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:24:20,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:24:20,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:24:20,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:24:20,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:24:20,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:24:20,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:24:20,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:24:20,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:24:20,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:24:20,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:24:20,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:24:20,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:24:20,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:24:20,735 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:24:20,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:24:20,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:24:20,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:24:20,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:24:20,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:24:20,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:24:20,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:24:20,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:24:20,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:24:20,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:24:20,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:24:20,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:24:20,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:24:20,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:24:20,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:24:20,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:24:20,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:24:20,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:24:20,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:24:20,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:24:20,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:24:20,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:24:20,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:24:20,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:24:20,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:24:21,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:24:21,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:24:21,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:24:21,065 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:24:21,065 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:24:21,066 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted-2.i [2020-10-14 23:24:21,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbb7f2720/c3de45be8bd2425c8070dd50157af7fa/FLAG9c4c8d857 [2020-10-14 23:24:21,556 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:24:21,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-sorted-2.i [2020-10-14 23:24:21,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbb7f2720/c3de45be8bd2425c8070dd50157af7fa/FLAG9c4c8d857 [2020-10-14 23:24:21,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbb7f2720/c3de45be8bd2425c8070dd50157af7fa [2020-10-14 23:24:21,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:24:21,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:24:21,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:24:21,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:24:21,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:24:21,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:24:21" (1/1) ... [2020-10-14 23:24:21,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7a5fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:21, skipping insertion in model container [2020-10-14 23:24:21,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:24:21" (1/1) ... [2020-10-14 23:24:21,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:24:21,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:24:22,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:24:22,394 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:24:22,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:24:22,491 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:24:22,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22 WrapperNode [2020-10-14 23:24:22,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:24:22,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:24:22,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:24:22,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:24:22,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:24:22,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:24:22,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:24:22,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:24:22,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:24:22,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:24:22,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:24:22,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:24:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:24:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:24:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:24:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:24:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:24:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:24:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:24:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:24:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:24:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:24:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:24:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:24:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:24:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:24:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:24:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:24:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:24:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:24:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:24:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:24:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:24:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:24:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:24:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:24:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:24:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:24:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:24:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:24:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:24:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:24:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:24:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:24:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:24:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:24:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:24:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:24:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:24:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:24:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:24:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:24:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:24:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:24:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:24:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:24:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:24:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:24:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:24:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:24:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:24:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:24:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:24:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:24:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:24:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:24:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:24:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:24:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:24:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:24:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:24:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:24:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:24:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:24:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:24:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:24:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:24:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:24:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:24:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:24:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:24:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:24:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:24:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:24:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:24:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:24:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:24:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:24:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:24:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:24:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:24:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:24:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:24:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:24:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:24:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:24:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:24:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:24:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:24:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:24:23,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:24:23,299 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-14 23:24:23,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:24:23 BoogieIcfgContainer [2020-10-14 23:24:23,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:24:23,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:24:23,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:24:23,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:24:23,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:24:21" (1/3) ... [2020-10-14 23:24:23,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a0c16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:24:23, skipping insertion in model container [2020-10-14 23:24:23,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22" (2/3) ... [2020-10-14 23:24:23,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a0c16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:24:23, skipping insertion in model container [2020-10-14 23:24:23,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:24:23" (3/3) ... [2020-10-14 23:24:23,325 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2020-10-14 23:24:23,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:24:23,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 23:24:23,360 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 23:24:23,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:24:23,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:24:23,383 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:24:23,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:24:23,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:24:23,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:24:23,384 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:24:23,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:24:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-14 23:24:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:24:23,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:23,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:23,412 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:23,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1007014106, now seen corresponding path program 1 times [2020-10-14 23:24:23,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:23,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356864689] [2020-10-14 23:24:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:23,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:23,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:24:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 23:24:23,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:23,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:24:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:24:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:24:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:23,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:23,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:24:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:23,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:23,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356864689] [2020-10-14 23:24:23,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:23,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:24:23,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722447834] [2020-10-14 23:24:23,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:24:23,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:23,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:24:23,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:24:24,001 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 5 states. [2020-10-14 23:24:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:24,265 INFO L93 Difference]: Finished difference Result 166 states and 269 transitions. [2020-10-14 23:24:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:24:24,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:24:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:24,277 INFO L225 Difference]: With dead ends: 166 [2020-10-14 23:24:24,278 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:24:24,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:24:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:24:24,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2020-10-14 23:24:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:24:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-14 23:24:24,327 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 10 [2020-10-14 23:24:24,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:24,327 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-14 23:24:24,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:24:24,327 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-14 23:24:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:24:24,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:24,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:24,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:24:24,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:24,330 INFO L82 PathProgramCache]: Analyzing trace with hash -764712451, now seen corresponding path program 1 times [2020-10-14 23:24:24,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:24,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635355630] [2020-10-14 23:24:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:24,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:24:24,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 23:24:24,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:24,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:24:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:24:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:24,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:24,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:24,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:24,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:24,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635355630] [2020-10-14 23:24:24,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:24,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:24:24,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355604572] [2020-10-14 23:24:24,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:24:24,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:24,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:24:24,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:24:24,721 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 6 states. [2020-10-14 23:24:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:24,958 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2020-10-14 23:24:24,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:24:24,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-14 23:24:24,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:24,961 INFO L225 Difference]: With dead ends: 98 [2020-10-14 23:24:24,961 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 23:24:24,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:24:24,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 23:24:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 69. [2020-10-14 23:24:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 23:24:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2020-10-14 23:24:24,979 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 18 [2020-10-14 23:24:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:24,979 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2020-10-14 23:24:24,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:24:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2020-10-14 23:24:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:24:24,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:24,982 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] [2020-10-14 23:24:24,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:24:24,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:24,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2136387571, now seen corresponding path program 1 times [2020-10-14 23:24:24,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:24,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676201576] [2020-10-14 23:24:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:24:25,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 23:24:25,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:24:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:24:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:25,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:25,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:25,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676201576] [2020-10-14 23:24:25,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:25,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:24:25,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310643384] [2020-10-14 23:24:25,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:24:25,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:25,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:24:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:24:25,350 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 6 states. [2020-10-14 23:24:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:25,613 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2020-10-14 23:24:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:24:25,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 23:24:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:25,616 INFO L225 Difference]: With dead ends: 130 [2020-10-14 23:24:25,617 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 23:24:25,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 23:24:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 72. [2020-10-14 23:24:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:24:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2020-10-14 23:24:25,627 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 21 [2020-10-14 23:24:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:25,628 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2020-10-14 23:24:25,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:24:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2020-10-14 23:24:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:24:25,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:25,629 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] [2020-10-14 23:24:25,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:24:25,629 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:25,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1975379770, now seen corresponding path program 1 times [2020-10-14 23:24:25,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:25,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682838176] [2020-10-14 23:24:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:24:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:24:25,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:24:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:24:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:25,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:25,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:25,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682838176] [2020-10-14 23:24:25,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:25,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:24:25,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173915465] [2020-10-14 23:24:25,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:24:25,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:25,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:24:25,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:24:25,727 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 4 states. [2020-10-14 23:24:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:25,849 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2020-10-14 23:24:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:24:25,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 23:24:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:25,850 INFO L225 Difference]: With dead ends: 130 [2020-10-14 23:24:25,851 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:24:25,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:24:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:24:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-10-14 23:24:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:24:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-14 23:24:25,859 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 22 [2020-10-14 23:24:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:25,859 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-14 23:24:25,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:24:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-14 23:24:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:24:25,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:25,860 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] [2020-10-14 23:24:25,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:24:25,861 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -964262520, now seen corresponding path program 1 times [2020-10-14 23:24:25,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:25,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316125974] [2020-10-14 23:24:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:26,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:26,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:24:26,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-14 23:24:26,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:26,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:24:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:24:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:26,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:26,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:26,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:26,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:26,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:26,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316125974] [2020-10-14 23:24:26,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:26,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:24:26,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046217996] [2020-10-14 23:24:26,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:24:26,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:26,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:24:26,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:24:26,454 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 8 states. [2020-10-14 23:24:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:26,804 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2020-10-14 23:24:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:26,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-14 23:24:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:26,806 INFO L225 Difference]: With dead ends: 115 [2020-10-14 23:24:26,806 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 23:24:26,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 23:24:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2020-10-14 23:24:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 23:24:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-10-14 23:24:26,828 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 22 [2020-10-14 23:24:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:26,828 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-10-14 23:24:26,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:24:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-10-14 23:24:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:24:26,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:26,831 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] [2020-10-14 23:24:26,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:24:26,831 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:26,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1597211810, now seen corresponding path program 1 times [2020-10-14 23:24:26,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:26,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592439516] [2020-10-14 23:24:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:26,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:24:27,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 23:24:27,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:27,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:24:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:27,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:24:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:27,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:24:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:27,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592439516] [2020-10-14 23:24:27,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:27,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:27,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043380211] [2020-10-14 23:24:27,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:27,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:27,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:27,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:27,253 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 9 states. [2020-10-14 23:24:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:27,731 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2020-10-14 23:24:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:27,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-14 23:24:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:27,733 INFO L225 Difference]: With dead ends: 128 [2020-10-14 23:24:27,733 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:24:27,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:24:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 83. [2020-10-14 23:24:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:24:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2020-10-14 23:24:27,746 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 25 [2020-10-14 23:24:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:27,746 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2020-10-14 23:24:27,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2020-10-14 23:24:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:24:27,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:27,748 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:27,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:24:27,748 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:27,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash -474324013, now seen corresponding path program 1 times [2020-10-14 23:24:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:27,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477866352] [2020-10-14 23:24:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:27,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:24:28,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:28,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 23:24:28,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:24:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:24:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:28,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:28,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:28,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477866352] [2020-10-14 23:24:28,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:28,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:28,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327591294] [2020-10-14 23:24:28,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:28,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:28,208 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 9 states. [2020-10-14 23:24:28,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:28,662 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2020-10-14 23:24:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:28,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-14 23:24:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:28,664 INFO L225 Difference]: With dead ends: 147 [2020-10-14 23:24:28,664 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 23:24:28,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:28,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 23:24:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 86. [2020-10-14 23:24:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 23:24:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2020-10-14 23:24:28,674 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 26 [2020-10-14 23:24:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:28,674 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2020-10-14 23:24:28,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2020-10-14 23:24:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:24:28,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:28,676 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:24:28,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:24:28,676 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1238565257, now seen corresponding path program 1 times [2020-10-14 23:24:28,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:28,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927200132] [2020-10-14 23:24:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:24:28,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 23:24:28,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:24:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:24:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:29,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:29,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:29,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:29,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:29,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927200132] [2020-10-14 23:24:29,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:29,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:29,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485545964] [2020-10-14 23:24:29,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:29,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:29,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:29,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:29,088 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 10 states. [2020-10-14 23:24:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:29,575 INFO L93 Difference]: Finished difference Result 200 states and 240 transitions. [2020-10-14 23:24:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:29,575 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-14 23:24:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:29,577 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:24:29,577 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 23:24:29,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 23:24:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 100. [2020-10-14 23:24:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:24:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2020-10-14 23:24:29,588 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 29 [2020-10-14 23:24:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:29,588 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2020-10-14 23:24:29,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2020-10-14 23:24:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:24:29,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:29,590 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:24:29,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:24:29,590 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:29,591 INFO L82 PathProgramCache]: Analyzing trace with hash -2047911883, now seen corresponding path program 1 times [2020-10-14 23:24:29,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:29,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278197419] [2020-10-14 23:24:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:30,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:24:30,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-14 23:24:30,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:30,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:24:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:24:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:30,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:30,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:30,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:30,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:30,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:30,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278197419] [2020-10-14 23:24:30,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:30,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:30,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295656620] [2020-10-14 23:24:30,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:30,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:30,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:30,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:30,375 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 9 states. [2020-10-14 23:24:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:30,641 INFO L93 Difference]: Finished difference Result 187 states and 227 transitions. [2020-10-14 23:24:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:30,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-14 23:24:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:30,643 INFO L225 Difference]: With dead ends: 187 [2020-10-14 23:24:30,643 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 23:24:30,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 23:24:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 100. [2020-10-14 23:24:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:24:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2020-10-14 23:24:30,653 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 29 [2020-10-14 23:24:30,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:30,653 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2020-10-14 23:24:30,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2020-10-14 23:24:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:24:30,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:30,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:30,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:24:30,655 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:30,655 INFO L82 PathProgramCache]: Analyzing trace with hash -848719280, now seen corresponding path program 1 times [2020-10-14 23:24:30,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:30,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650557501] [2020-10-14 23:24:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:30,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:24:30,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-14 23:24:30,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:30,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:24:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:31,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:31,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650557501] [2020-10-14 23:24:31,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:31,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:31,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199790414] [2020-10-14 23:24:31,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:31,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:31,116 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand 9 states. [2020-10-14 23:24:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:31,555 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2020-10-14 23:24:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:31,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-14 23:24:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:31,559 INFO L225 Difference]: With dead ends: 171 [2020-10-14 23:24:31,559 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:24:31,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:24:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2020-10-14 23:24:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 23:24:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2020-10-14 23:24:31,570 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 29 [2020-10-14 23:24:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:31,570 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2020-10-14 23:24:31,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2020-10-14 23:24:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:24:31,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:31,572 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:31,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:24:31,572 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1863000761, now seen corresponding path program 1 times [2020-10-14 23:24:31,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:31,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440392585] [2020-10-14 23:24:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:31,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:24:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 23:24:31,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:31,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:24:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:31,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:31,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440392585] [2020-10-14 23:24:31,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:31,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:31,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898749271] [2020-10-14 23:24:31,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:31,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:31,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:31,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:31,946 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand 11 states. [2020-10-14 23:24:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:32,516 INFO L93 Difference]: Finished difference Result 197 states and 235 transitions. [2020-10-14 23:24:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:24:32,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-14 23:24:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:32,518 INFO L225 Difference]: With dead ends: 197 [2020-10-14 23:24:32,518 INFO L226 Difference]: Without dead ends: 195 [2020-10-14 23:24:32,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-14 23:24:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 118. [2020-10-14 23:24:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 23:24:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 143 transitions. [2020-10-14 23:24:32,530 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 143 transitions. Word has length 29 [2020-10-14 23:24:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:32,530 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 143 transitions. [2020-10-14 23:24:32,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 143 transitions. [2020-10-14 23:24:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:24:32,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:32,532 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] [2020-10-14 23:24:32,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:24:32,532 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash 921966592, now seen corresponding path program 1 times [2020-10-14 23:24:32,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:32,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537903503] [2020-10-14 23:24:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:24:32,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 23:24:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:32,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:24:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:32,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:32,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:32,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:32,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537903503] [2020-10-14 23:24:32,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:32,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:32,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969245904] [2020-10-14 23:24:32,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:32,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:32,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:32,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:32,974 INFO L87 Difference]: Start difference. First operand 118 states and 143 transitions. Second operand 10 states. [2020-10-14 23:24:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:33,371 INFO L93 Difference]: Finished difference Result 186 states and 220 transitions. [2020-10-14 23:24:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:33,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-14 23:24:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:33,373 INFO L225 Difference]: With dead ends: 186 [2020-10-14 23:24:33,373 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 23:24:33,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:33,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 23:24:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 130. [2020-10-14 23:24:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 23:24:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 160 transitions. [2020-10-14 23:24:33,384 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 160 transitions. Word has length 31 [2020-10-14 23:24:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:33,384 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 160 transitions. [2020-10-14 23:24:33,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 160 transitions. [2020-10-14 23:24:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:24:33,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:33,385 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] [2020-10-14 23:24:33,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:24:33,385 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:33,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:33,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1731313218, now seen corresponding path program 1 times [2020-10-14 23:24:33,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:33,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660111090] [2020-10-14 23:24:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:35,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:35,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:24:35,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:24:35,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1908 [2020-10-14 23:24:35,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:35,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:24:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:35,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:35,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:35,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:35,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:35,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:35,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:35,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:35,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:35,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:35,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660111090] [2020-10-14 23:24:35,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:35,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 23:24:35,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087167405] [2020-10-14 23:24:35,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:35,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:35,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:35,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:35,452 INFO L87 Difference]: Start difference. First operand 130 states and 160 transitions. Second operand 11 states. [2020-10-14 23:24:35,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:35,874 INFO L93 Difference]: Finished difference Result 218 states and 260 transitions. [2020-10-14 23:24:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:24:35,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-14 23:24:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:35,878 INFO L225 Difference]: With dead ends: 218 [2020-10-14 23:24:35,878 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 23:24:35,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 23:24:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-14 23:24:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 23:24:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2020-10-14 23:24:35,892 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 31 [2020-10-14 23:24:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:35,893 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2020-10-14 23:24:35,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2020-10-14 23:24:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:24:35,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:35,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:35,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:24:35,895 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:35,895 INFO L82 PathProgramCache]: Analyzing trace with hash -840660915, now seen corresponding path program 1 times [2020-10-14 23:24:35,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:35,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730943981] [2020-10-14 23:24:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:24:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 23:24:36,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:36,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:24:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:36,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:36,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:36,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:36,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:36,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730943981] [2020-10-14 23:24:36,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:36,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:36,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408389439] [2020-10-14 23:24:36,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:36,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:36,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:36,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:36,154 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand 9 states. [2020-10-14 23:24:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:36,513 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2020-10-14 23:24:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:36,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-14 23:24:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:36,515 INFO L225 Difference]: With dead ends: 185 [2020-10-14 23:24:36,515 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 23:24:36,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 23:24:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-10-14 23:24:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 23:24:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2020-10-14 23:24:36,532 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 31 [2020-10-14 23:24:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:36,534 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2020-10-14 23:24:36,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2020-10-14 23:24:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:36,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:36,537 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] [2020-10-14 23:24:36,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:24:36,537 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:36,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1484298053, now seen corresponding path program 1 times [2020-10-14 23:24:36,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:36,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422094509] [2020-10-14 23:24:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:37,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:37,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-14 23:24:37,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:37,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:24:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:37,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:37,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:37,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:37,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:37,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 23:24:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:37,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422094509] [2020-10-14 23:24:37,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:37,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:37,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559827514] [2020-10-14 23:24:37,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:37,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:37,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:37,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:37,428 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand 11 states. [2020-10-14 23:24:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:37,935 INFO L93 Difference]: Finished difference Result 202 states and 238 transitions. [2020-10-14 23:24:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:24:37,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 23:24:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:37,938 INFO L225 Difference]: With dead ends: 202 [2020-10-14 23:24:37,938 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 23:24:37,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 23:24:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 146. [2020-10-14 23:24:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 23:24:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2020-10-14 23:24:37,958 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 32 [2020-10-14 23:24:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:37,959 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2020-10-14 23:24:37,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2020-10-14 23:24:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:37,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:37,961 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] [2020-10-14 23:24:37,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:24:37,961 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:37,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1427039751, now seen corresponding path program 1 times [2020-10-14 23:24:37,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:37,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809352239] [2020-10-14 23:24:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:38,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:38,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:24:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-14 23:24:38,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:38,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:24:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:24:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:38,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:38,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:38,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:38,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:38,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:38,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809352239] [2020-10-14 23:24:38,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:38,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:24:38,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735492884] [2020-10-14 23:24:38,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:24:38,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:38,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:24:38,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:24:38,605 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand 6 states. [2020-10-14 23:24:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:38,789 INFO L93 Difference]: Finished difference Result 186 states and 221 transitions. [2020-10-14 23:24:38,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:24:38,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-14 23:24:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:38,791 INFO L225 Difference]: With dead ends: 186 [2020-10-14 23:24:38,791 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 23:24:38,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:24:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 23:24:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 148. [2020-10-14 23:24:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 23:24:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 179 transitions. [2020-10-14 23:24:38,807 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 179 transitions. Word has length 32 [2020-10-14 23:24:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:38,807 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 179 transitions. [2020-10-14 23:24:38,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:24:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 179 transitions. [2020-10-14 23:24:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:38,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:38,808 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] [2020-10-14 23:24:38,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:24:38,808 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2130610873, now seen corresponding path program 1 times [2020-10-14 23:24:38,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:38,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010425873] [2020-10-14 23:24:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:42,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:42,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:42,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:24:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3333 [2020-10-14 23:24:42,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:42,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:24:42,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:42,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:42,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:42,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:42,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010425873] [2020-10-14 23:24:42,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:42,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 23:24:42,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664745340] [2020-10-14 23:24:42,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:42,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:42,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:42,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:42,310 INFO L87 Difference]: Start difference. First operand 148 states and 179 transitions. Second operand 11 states. [2020-10-14 23:24:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:42,664 INFO L93 Difference]: Finished difference Result 196 states and 228 transitions. [2020-10-14 23:24:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:42,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 23:24:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:42,665 INFO L225 Difference]: With dead ends: 196 [2020-10-14 23:24:42,666 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 23:24:42,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:42,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 23:24:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 152. [2020-10-14 23:24:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 23:24:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2020-10-14 23:24:42,680 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 32 [2020-10-14 23:24:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:42,680 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2020-10-14 23:24:42,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2020-10-14 23:24:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:24:42,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:42,681 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:42,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:24:42,682 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:42,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1652849204, now seen corresponding path program 2 times [2020-10-14 23:24:42,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:42,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744211881] [2020-10-14 23:24:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:42,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:42,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:24:42,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 23:24:42,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:42,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:24:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:43,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:43,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:43,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:43,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744211881] [2020-10-14 23:24:43,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:43,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:43,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035090793] [2020-10-14 23:24:43,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:43,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:43,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:43,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:43,119 INFO L87 Difference]: Start difference. First operand 152 states and 183 transitions. Second operand 11 states. [2020-10-14 23:24:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:43,632 INFO L93 Difference]: Finished difference Result 262 states and 310 transitions. [2020-10-14 23:24:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:43,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:24:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:43,634 INFO L225 Difference]: With dead ends: 262 [2020-10-14 23:24:43,634 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 23:24:43,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 23:24:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2020-10-14 23:24:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 23:24:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 185 transitions. [2020-10-14 23:24:43,651 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 185 transitions. Word has length 33 [2020-10-14 23:24:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:43,652 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 185 transitions. [2020-10-14 23:24:43,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 185 transitions. [2020-10-14 23:24:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:24:43,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:43,653 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:24:43,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:24:43,653 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:43,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1263003227, now seen corresponding path program 1 times [2020-10-14 23:24:43,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:43,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51257898] [2020-10-14 23:24:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:24:44,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-14 23:24:44,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:44,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:24:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:44,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:44,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:44,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:44,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:44,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51257898] [2020-10-14 23:24:44,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:44,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:44,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075242321] [2020-10-14 23:24:44,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:44,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:44,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:44,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:44,343 INFO L87 Difference]: Start difference. First operand 153 states and 185 transitions. Second operand 11 states. [2020-10-14 23:24:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:44,887 INFO L93 Difference]: Finished difference Result 228 states and 271 transitions. [2020-10-14 23:24:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:24:44,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:24:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:44,889 INFO L225 Difference]: With dead ends: 228 [2020-10-14 23:24:44,889 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 23:24:44,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 23:24:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 174. [2020-10-14 23:24:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 23:24:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 211 transitions. [2020-10-14 23:24:44,904 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 211 transitions. Word has length 33 [2020-10-14 23:24:44,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:44,904 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 211 transitions. [2020-10-14 23:24:44,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:44,904 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 211 transitions. [2020-10-14 23:24:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:24:44,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:44,905 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] [2020-10-14 23:24:44,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:24:44,905 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:44,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:44,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1246763300, now seen corresponding path program 1 times [2020-10-14 23:24:44,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:44,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296568116] [2020-10-14 23:24:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:45,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:24:45,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:45,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-14 23:24:45,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:45,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:24:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:45,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:45,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:45,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:45,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:45,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296568116] [2020-10-14 23:24:45,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:45,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:45,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516500999] [2020-10-14 23:24:45,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:45,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:45,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:45,644 INFO L87 Difference]: Start difference. First operand 174 states and 211 transitions. Second operand 11 states. [2020-10-14 23:24:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:46,310 INFO L93 Difference]: Finished difference Result 209 states and 248 transitions. [2020-10-14 23:24:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:24:46,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:24:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:46,312 INFO L225 Difference]: With dead ends: 209 [2020-10-14 23:24:46,312 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 23:24:46,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:24:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 23:24:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 176. [2020-10-14 23:24:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 23:24:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 213 transitions. [2020-10-14 23:24:46,325 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 213 transitions. Word has length 33 [2020-10-14 23:24:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:46,326 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 213 transitions. [2020-10-14 23:24:46,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 213 transitions. [2020-10-14 23:24:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:24:46,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:46,327 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:46,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:24:46,327 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:46,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:46,327 INFO L82 PathProgramCache]: Analyzing trace with hash -846836505, now seen corresponding path program 1 times [2020-10-14 23:24:46,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:46,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430758766] [2020-10-14 23:24:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:46,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:46,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:24:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-14 23:24:46,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:46,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:24:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:47,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:47,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:47,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:47,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:47,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:47,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:47,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:47,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430758766] [2020-10-14 23:24:47,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:47,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:47,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951129886] [2020-10-14 23:24:47,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:47,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:47,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:47,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:47,176 INFO L87 Difference]: Start difference. First operand 176 states and 213 transitions. Second operand 10 states. [2020-10-14 23:24:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:47,802 INFO L93 Difference]: Finished difference Result 273 states and 323 transitions. [2020-10-14 23:24:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:24:47,802 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-14 23:24:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:47,803 INFO L225 Difference]: With dead ends: 273 [2020-10-14 23:24:47,804 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 23:24:47,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 23:24:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2020-10-14 23:24:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 23:24:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2020-10-14 23:24:47,816 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 33 [2020-10-14 23:24:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:47,817 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2020-10-14 23:24:47,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2020-10-14 23:24:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:24:47,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:47,818 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:47,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:24:47,818 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:47,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1864883536, now seen corresponding path program 2 times [2020-10-14 23:24:47,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:47,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921440638] [2020-10-14 23:24:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:48,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:24:48,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 23:24:48,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:48,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:24:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:48,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:48,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:48,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:48,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:48,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:48,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921440638] [2020-10-14 23:24:48,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:48,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:48,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328837939] [2020-10-14 23:24:48,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:48,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:48,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:48,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:48,269 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand 12 states. [2020-10-14 23:24:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:48,953 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2020-10-14 23:24:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:48,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 23:24:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:48,957 INFO L225 Difference]: With dead ends: 252 [2020-10-14 23:24:48,957 INFO L226 Difference]: Without dead ends: 250 [2020-10-14 23:24:48,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-14 23:24:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 172. [2020-10-14 23:24:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 23:24:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2020-10-14 23:24:48,977 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 33 [2020-10-14 23:24:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:48,977 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2020-10-14 23:24:48,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2020-10-14 23:24:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:48,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:48,978 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] [2020-10-14 23:24:48,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:24:48,978 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:48,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1182218339, now seen corresponding path program 1 times [2020-10-14 23:24:48,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:48,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813985330] [2020-10-14 23:24:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:52,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:52,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:52,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:52,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:24:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3940 [2020-10-14 23:24:52,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:52,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:24:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:53,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:53,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:53,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813985330] [2020-10-14 23:24:53,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:53,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 23:24:53,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390428225] [2020-10-14 23:24:53,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:53,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:53,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:53,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:53,089 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand 11 states. [2020-10-14 23:24:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:53,478 INFO L93 Difference]: Finished difference Result 324 states and 382 transitions. [2020-10-14 23:24:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:24:53,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-14 23:24:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:53,479 INFO L225 Difference]: With dead ends: 324 [2020-10-14 23:24:53,480 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 23:24:53,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 23:24:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 170. [2020-10-14 23:24:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 23:24:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 198 transitions. [2020-10-14 23:24:53,498 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 198 transitions. Word has length 34 [2020-10-14 23:24:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:53,498 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 198 transitions. [2020-10-14 23:24:53,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 198 transitions. [2020-10-14 23:24:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:24:53,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:53,499 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:53,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:24:53,500 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:53,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1563653929, now seen corresponding path program 1 times [2020-10-14 23:24:53,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:53,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650676122] [2020-10-14 23:24:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:53,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:24:53,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 23:24:53,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:53,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:24:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:54,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:54,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:54,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:54,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:54,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:54,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:54,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:54,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650676122] [2020-10-14 23:24:54,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:54,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:54,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636015559] [2020-10-14 23:24:54,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:54,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:54,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:54,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:54,183 INFO L87 Difference]: Start difference. First operand 170 states and 198 transitions. Second operand 12 states. [2020-10-14 23:24:55,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:55,235 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2020-10-14 23:24:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:24:55,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-14 23:24:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:55,239 INFO L225 Difference]: With dead ends: 269 [2020-10-14 23:24:55,239 INFO L226 Difference]: Without dead ends: 267 [2020-10-14 23:24:55,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:24:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-14 23:24:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 182. [2020-10-14 23:24:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 23:24:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2020-10-14 23:24:55,269 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 35 [2020-10-14 23:24:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:55,270 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2020-10-14 23:24:55,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2020-10-14 23:24:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:24:55,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:55,271 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:55,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:24:55,271 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:55,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:55,272 INFO L82 PathProgramCache]: Analyzing trace with hash 968685860, now seen corresponding path program 1 times [2020-10-14 23:24:55,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:55,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596820670] [2020-10-14 23:24:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:55,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:55,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:24:55,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:55,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 23:24:55,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:55,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:24:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:55,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:55,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:55,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:55,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596820670] [2020-10-14 23:24:55,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:55,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:55,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033207770] [2020-10-14 23:24:55,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:55,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:55,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:55,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:55,603 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand 11 states. [2020-10-14 23:24:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:56,388 INFO L93 Difference]: Finished difference Result 231 states and 270 transitions. [2020-10-14 23:24:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:24:56,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-14 23:24:56,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:56,391 INFO L225 Difference]: With dead ends: 231 [2020-10-14 23:24:56,391 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 23:24:56,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 23:24:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 189. [2020-10-14 23:24:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 23:24:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 223 transitions. [2020-10-14 23:24:56,405 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 223 transitions. Word has length 35 [2020-10-14 23:24:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:56,405 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 223 transitions. [2020-10-14 23:24:56,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 223 transitions. [2020-10-14 23:24:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:56,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:56,407 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:56,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:24:56,407 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1229122876, now seen corresponding path program 1 times [2020-10-14 23:24:56,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:56,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038176873] [2020-10-14 23:24:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:56,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:24:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:57,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:57,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:57,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:57,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:57,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038176873] [2020-10-14 23:24:57,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:57,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:57,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658409511] [2020-10-14 23:24:57,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:57,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:57,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:57,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:57,085 INFO L87 Difference]: Start difference. First operand 189 states and 223 transitions. Second operand 12 states. [2020-10-14 23:24:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:57,638 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2020-10-14 23:24:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:57,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-14 23:24:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:57,640 INFO L225 Difference]: With dead ends: 241 [2020-10-14 23:24:57,640 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 23:24:57,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:24:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 23:24:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 184. [2020-10-14 23:24:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 23:24:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 214 transitions. [2020-10-14 23:24:57,654 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 214 transitions. Word has length 36 [2020-10-14 23:24:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:57,655 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 214 transitions. [2020-10-14 23:24:57,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 214 transitions. [2020-10-14 23:24:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:24:57,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:57,656 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:57,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:24:57,656 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:57,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1206325638, now seen corresponding path program 2 times [2020-10-14 23:24:57,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:57,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527293523] [2020-10-14 23:24:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:24:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:58,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:58,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:58,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:58,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:58,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:58,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527293523] [2020-10-14 23:24:58,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:58,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:58,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908325472] [2020-10-14 23:24:58,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:58,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:58,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:58,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:58,274 INFO L87 Difference]: Start difference. First operand 184 states and 214 transitions. Second operand 12 states. [2020-10-14 23:24:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:58,897 INFO L93 Difference]: Finished difference Result 237 states and 278 transitions. [2020-10-14 23:24:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:58,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-14 23:24:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:58,900 INFO L225 Difference]: With dead ends: 237 [2020-10-14 23:24:58,900 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 23:24:58,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:58,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 23:24:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 191. [2020-10-14 23:24:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:24:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 223 transitions. [2020-10-14 23:24:58,915 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 223 transitions. Word has length 37 [2020-10-14 23:24:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:58,915 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 223 transitions. [2020-10-14 23:24:58,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 223 transitions. [2020-10-14 23:24:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:24:58,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:58,916 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] [2020-10-14 23:24:58,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:24:58,917 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:58,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1328141549, now seen corresponding path program 1 times [2020-10-14 23:24:58,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:58,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608692764] [2020-10-14 23:24:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:59,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:59,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:59,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:24:59,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:59,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 23:24:59,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:59,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:24:59,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:59,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:59,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:59,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608692764] [2020-10-14 23:24:59,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:59,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:59,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488380204] [2020-10-14 23:24:59,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:59,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:59,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:59,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:59,334 INFO L87 Difference]: Start difference. First operand 191 states and 223 transitions. Second operand 9 states. [2020-10-14 23:24:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:59,683 INFO L93 Difference]: Finished difference Result 222 states and 257 transitions. [2020-10-14 23:24:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:24:59,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-14 23:24:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:59,685 INFO L225 Difference]: With dead ends: 222 [2020-10-14 23:24:59,686 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 23:24:59,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 23:24:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-14 23:24:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 23:24:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 226 transitions. [2020-10-14 23:24:59,700 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 226 transitions. Word has length 37 [2020-10-14 23:24:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:59,700 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 226 transitions. [2020-10-14 23:24:59,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 226 transitions. [2020-10-14 23:24:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:24:59,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:59,701 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] [2020-10-14 23:24:59,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:24:59,701 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:59,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:59,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2137488175, now seen corresponding path program 1 times [2020-10-14 23:24:59,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:59,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807186375] [2020-10-14 23:24:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:59,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:59,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:24:59,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 23:24:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:24:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:00,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:00,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:00,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:00,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:00,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:00,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:00,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:00,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807186375] [2020-10-14 23:25:00,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:00,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:00,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214193234] [2020-10-14 23:25:00,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:00,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:00,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:00,104 INFO L87 Difference]: Start difference. First operand 194 states and 226 transitions. Second operand 12 states. [2020-10-14 23:25:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:00,919 INFO L93 Difference]: Finished difference Result 292 states and 334 transitions. [2020-10-14 23:25:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:25:00,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-14 23:25:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:00,922 INFO L225 Difference]: With dead ends: 292 [2020-10-14 23:25:00,922 INFO L226 Difference]: Without dead ends: 290 [2020-10-14 23:25:00,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-14 23:25:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 215. [2020-10-14 23:25:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 23:25:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 253 transitions. [2020-10-14 23:25:00,943 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 253 transitions. Word has length 37 [2020-10-14 23:25:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:00,944 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 253 transitions. [2020-10-14 23:25:00,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 253 transitions. [2020-10-14 23:25:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:00,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:00,945 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:00,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:25:00,945 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:00,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:00,946 INFO L82 PathProgramCache]: Analyzing trace with hash 567259195, now seen corresponding path program 1 times [2020-10-14 23:25:00,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:00,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385583678] [2020-10-14 23:25:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:00,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:01,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:01,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-14 23:25:01,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:01,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:25:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:02,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:02,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:02,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:02,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:02,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:02,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:02,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:02,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:02,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:02,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385583678] [2020-10-14 23:25:02,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:02,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:25:02,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951699955] [2020-10-14 23:25:02,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:25:02,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:02,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:25:02,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:25:02,029 INFO L87 Difference]: Start difference. First operand 215 states and 253 transitions. Second operand 11 states. [2020-10-14 23:25:02,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:02,507 INFO L93 Difference]: Finished difference Result 254 states and 294 transitions. [2020-10-14 23:25:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:02,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-14 23:25:02,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:02,510 INFO L225 Difference]: With dead ends: 254 [2020-10-14 23:25:02,510 INFO L226 Difference]: Without dead ends: 252 [2020-10-14 23:25:02,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-14 23:25:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 210. [2020-10-14 23:25:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 23:25:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 249 transitions. [2020-10-14 23:25:02,531 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 249 transitions. Word has length 37 [2020-10-14 23:25:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:02,531 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 249 transitions. [2020-10-14 23:25:02,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:25:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 249 transitions. [2020-10-14 23:25:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:02,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:02,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:02,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:25:02,533 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:02,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1526340610, now seen corresponding path program 2 times [2020-10-14 23:25:02,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:02,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026476802] [2020-10-14 23:25:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:02,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:03,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-14 23:25:03,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:25:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:03,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:03,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:03,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:03,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026476802] [2020-10-14 23:25:03,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:03,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:03,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048583751] [2020-10-14 23:25:03,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:03,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:03,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:03,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:03,427 INFO L87 Difference]: Start difference. First operand 210 states and 249 transitions. Second operand 12 states. [2020-10-14 23:25:04,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:04,314 INFO L93 Difference]: Finished difference Result 337 states and 398 transitions. [2020-10-14 23:25:04,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:25:04,315 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-14 23:25:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:04,317 INFO L225 Difference]: With dead ends: 337 [2020-10-14 23:25:04,317 INFO L226 Difference]: Without dead ends: 286 [2020-10-14 23:25:04,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-14 23:25:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 238. [2020-10-14 23:25:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 23:25:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2020-10-14 23:25:04,352 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 37 [2020-10-14 23:25:04,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:04,353 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2020-10-14 23:25:04,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2020-10-14 23:25:04,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:25:04,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:04,355 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] [2020-10-14 23:25:04,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:25:04,356 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:04,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:04,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1837132652, now seen corresponding path program 1 times [2020-10-14 23:25:04,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:04,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054293453] [2020-10-14 23:25:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:04,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:25:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-14 23:25:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:04,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:25:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:25:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:04,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:04,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:04,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:04,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:04,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:04,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:05,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054293453] [2020-10-14 23:25:05,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:05,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:05,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380931302] [2020-10-14 23:25:05,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:05,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:05,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:05,006 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand 12 states. [2020-10-14 23:25:05,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:05,505 INFO L93 Difference]: Finished difference Result 311 states and 360 transitions. [2020-10-14 23:25:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:25:05,506 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-14 23:25:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:05,508 INFO L225 Difference]: With dead ends: 311 [2020-10-14 23:25:05,508 INFO L226 Difference]: Without dead ends: 300 [2020-10-14 23:25:05,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:05,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-14 23:25:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 238. [2020-10-14 23:25:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 23:25:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 282 transitions. [2020-10-14 23:25:05,529 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 282 transitions. Word has length 38 [2020-10-14 23:25:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:05,529 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 282 transitions. [2020-10-14 23:25:05,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 282 transitions. [2020-10-14 23:25:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:25:05,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:05,531 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] [2020-10-14 23:25:05,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:25:05,531 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:05,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1131900051, now seen corresponding path program 1 times [2020-10-14 23:25:05,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:05,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229890305] [2020-10-14 23:25:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:25:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 23:25:05,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:05,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:25:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:06,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:06,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:06,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:06,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:06,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:06,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229890305] [2020-10-14 23:25:06,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:06,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:06,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575232981] [2020-10-14 23:25:06,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:06,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:06,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:06,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:06,208 INFO L87 Difference]: Start difference. First operand 238 states and 282 transitions. Second operand 12 states. [2020-10-14 23:25:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:06,845 INFO L93 Difference]: Finished difference Result 302 states and 350 transitions. [2020-10-14 23:25:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:25:06,846 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-14 23:25:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:06,847 INFO L225 Difference]: With dead ends: 302 [2020-10-14 23:25:06,848 INFO L226 Difference]: Without dead ends: 300 [2020-10-14 23:25:06,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-14 23:25:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 232. [2020-10-14 23:25:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 23:25:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 276 transitions. [2020-10-14 23:25:06,865 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 276 transitions. Word has length 39 [2020-10-14 23:25:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:06,865 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 276 transitions. [2020-10-14 23:25:06,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 276 transitions. [2020-10-14 23:25:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:25:06,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:06,866 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-14 23:25:06,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:25:06,867 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:06,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1732069842, now seen corresponding path program 2 times [2020-10-14 23:25:06,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:06,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221215919] [2020-10-14 23:25:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:07,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:07,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:25:07,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 23:25:07,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:07,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:25:07,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221215919] [2020-10-14 23:25:07,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:07,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:07,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782776743] [2020-10-14 23:25:07,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:07,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:07,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:07,613 INFO L87 Difference]: Start difference. First operand 232 states and 276 transitions. Second operand 12 states. [2020-10-14 23:25:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:08,080 INFO L93 Difference]: Finished difference Result 269 states and 314 transitions. [2020-10-14 23:25:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:25:08,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-14 23:25:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:08,082 INFO L225 Difference]: With dead ends: 269 [2020-10-14 23:25:08,083 INFO L226 Difference]: Without dead ends: 267 [2020-10-14 23:25:08,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-14 23:25:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 223. [2020-10-14 23:25:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-14 23:25:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 266 transitions. [2020-10-14 23:25:08,101 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 266 transitions. Word has length 39 [2020-10-14 23:25:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:08,101 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 266 transitions. [2020-10-14 23:25:08,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 266 transitions. [2020-10-14 23:25:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:25:08,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:08,102 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:08,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:25:08,102 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:08,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash 800269947, now seen corresponding path program 2 times [2020-10-14 23:25:08,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:08,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212888086] [2020-10-14 23:25:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:08,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:08,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:08,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:08,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:08,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:08,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:08,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212888086] [2020-10-14 23:25:08,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:08,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:08,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190915961] [2020-10-14 23:25:08,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:08,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:08,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:08,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:08,519 INFO L87 Difference]: Start difference. First operand 223 states and 266 transitions. Second operand 13 states. [2020-10-14 23:25:09,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:09,363 INFO L93 Difference]: Finished difference Result 273 states and 324 transitions. [2020-10-14 23:25:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:25:09,363 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-14 23:25:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:09,366 INFO L225 Difference]: With dead ends: 273 [2020-10-14 23:25:09,366 INFO L226 Difference]: Without dead ends: 271 [2020-10-14 23:25:09,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:25:09,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-14 23:25:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 203. [2020-10-14 23:25:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-14 23:25:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 244 transitions. [2020-10-14 23:25:09,381 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 244 transitions. Word has length 39 [2020-10-14 23:25:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:09,382 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 244 transitions. [2020-10-14 23:25:09,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 244 transitions. [2020-10-14 23:25:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:09,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:09,383 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 23:25:09,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:25:09,383 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:09,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:09,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1544953456, now seen corresponding path program 1 times [2020-10-14 23:25:09,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:09,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130463462] [2020-10-14 23:25:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:09,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:09,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:09,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 23:25:09,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:09,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:09,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:09,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:25:09,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:09,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:09,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130463462] [2020-10-14 23:25:09,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:09,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:09,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117473036] [2020-10-14 23:25:09,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:09,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:09,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:09,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:09,818 INFO L87 Difference]: Start difference. First operand 203 states and 244 transitions. Second operand 12 states. [2020-10-14 23:25:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:10,397 INFO L93 Difference]: Finished difference Result 344 states and 406 transitions. [2020-10-14 23:25:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:10,399 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-14 23:25:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:10,401 INFO L225 Difference]: With dead ends: 344 [2020-10-14 23:25:10,401 INFO L226 Difference]: Without dead ends: 291 [2020-10-14 23:25:10,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-14 23:25:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 224. [2020-10-14 23:25:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-14 23:25:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2020-10-14 23:25:10,422 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 40 [2020-10-14 23:25:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:10,422 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2020-10-14 23:25:10,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2020-10-14 23:25:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:10,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:10,423 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 23:25:10,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:25:10,423 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash 735606830, now seen corresponding path program 1 times [2020-10-14 23:25:10,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:10,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258630784] [2020-10-14 23:25:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:11,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:11,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:11,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-14 23:25:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:11,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:25:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:11,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:11,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:11,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258630784] [2020-10-14 23:25:11,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:11,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:25:11,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681803189] [2020-10-14 23:25:11,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:25:11,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:11,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:25:11,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:25:11,169 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 11 states. [2020-10-14 23:25:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:11,650 INFO L93 Difference]: Finished difference Result 302 states and 356 transitions. [2020-10-14 23:25:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:25:11,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 23:25:11,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:11,654 INFO L225 Difference]: With dead ends: 302 [2020-10-14 23:25:11,654 INFO L226 Difference]: Without dead ends: 242 [2020-10-14 23:25:11,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-14 23:25:11,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 223. [2020-10-14 23:25:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-14 23:25:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 263 transitions. [2020-10-14 23:25:11,674 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 263 transitions. Word has length 40 [2020-10-14 23:25:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:11,674 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 263 transitions. [2020-10-14 23:25:11,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:25:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 263 transitions. [2020-10-14 23:25:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:11,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:11,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:11,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:25:11,675 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:11,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash 846174041, now seen corresponding path program 1 times [2020-10-14 23:25:11,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:11,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348748653] [2020-10-14 23:25:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 23:25:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:11,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:25:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:11,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:11,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:11,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:11,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:11,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:11,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348748653] [2020-10-14 23:25:11,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:11,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:25:11,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038444194] [2020-10-14 23:25:11,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:25:11,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:11,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:25:11,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:25:11,877 INFO L87 Difference]: Start difference. First operand 223 states and 263 transitions. Second operand 10 states. [2020-10-14 23:25:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:12,328 INFO L93 Difference]: Finished difference Result 306 states and 351 transitions. [2020-10-14 23:25:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:12,334 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-14 23:25:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:12,336 INFO L225 Difference]: With dead ends: 306 [2020-10-14 23:25:12,336 INFO L226 Difference]: Without dead ends: 281 [2020-10-14 23:25:12,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-14 23:25:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 235. [2020-10-14 23:25:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-14 23:25:12,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 276 transitions. [2020-10-14 23:25:12,358 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 276 transitions. Word has length 40 [2020-10-14 23:25:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:12,359 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 276 transitions. [2020-10-14 23:25:12,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:25:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 276 transitions. [2020-10-14 23:25:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:25:12,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:12,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:12,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:25:12,360 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash 461100162, now seen corresponding path program 1 times [2020-10-14 23:25:12,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:12,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129872565] [2020-10-14 23:25:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:12,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:12,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:12,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:25:12,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 23:25:12,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:12,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:25:12,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:12,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:12,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:12,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:12,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:12,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129872565] [2020-10-14 23:25:12,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:12,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:25:12,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821316128] [2020-10-14 23:25:12,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:25:12,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:25:12,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:25:12,670 INFO L87 Difference]: Start difference. First operand 235 states and 276 transitions. Second operand 10 states. [2020-10-14 23:25:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:13,113 INFO L93 Difference]: Finished difference Result 280 states and 322 transitions. [2020-10-14 23:25:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:25:13,114 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-14 23:25:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:13,115 INFO L225 Difference]: With dead ends: 280 [2020-10-14 23:25:13,115 INFO L226 Difference]: Without dead ends: 278 [2020-10-14 23:25:13,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-14 23:25:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 239. [2020-10-14 23:25:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-14 23:25:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 280 transitions. [2020-10-14 23:25:13,130 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 280 transitions. Word has length 41 [2020-10-14 23:25:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:13,130 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 280 transitions. [2020-10-14 23:25:13,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:25:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 280 transitions. [2020-10-14 23:25:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:25:13,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:13,131 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:13,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:25:13,131 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1988141826, now seen corresponding path program 1 times [2020-10-14 23:25:13,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:13,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915259321] [2020-10-14 23:25:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:13,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:25:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:13,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:13,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:13,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:13,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:13,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:13,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:13,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915259321] [2020-10-14 23:25:13,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:13,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:13,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935833583] [2020-10-14 23:25:13,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:13,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:13,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:13,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:13,752 INFO L87 Difference]: Start difference. First operand 239 states and 280 transitions. Second operand 13 states. [2020-10-14 23:25:14,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:14,455 INFO L93 Difference]: Finished difference Result 320 states and 366 transitions. [2020-10-14 23:25:14,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:14,455 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 23:25:14,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:14,456 INFO L225 Difference]: With dead ends: 320 [2020-10-14 23:25:14,457 INFO L226 Difference]: Without dead ends: 318 [2020-10-14 23:25:14,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:25:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-14 23:25:14,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 245. [2020-10-14 23:25:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-14 23:25:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 287 transitions. [2020-10-14 23:25:14,480 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 287 transitions. Word has length 41 [2020-10-14 23:25:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:14,481 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 287 transitions. [2020-10-14 23:25:14,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 287 transitions. [2020-10-14 23:25:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:25:14,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:14,482 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:14,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:25:14,482 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:14,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:14,483 INFO L82 PathProgramCache]: Analyzing trace with hash 225514319, now seen corresponding path program 3 times [2020-10-14 23:25:14,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:14,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486860357] [2020-10-14 23:25:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:25:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 23:25:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:25:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:25:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:14,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:14,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:14,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:14,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486860357] [2020-10-14 23:25:14,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:14,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:25:14,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612391318] [2020-10-14 23:25:14,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:25:14,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:14,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:25:14,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:25:14,830 INFO L87 Difference]: Start difference. First operand 245 states and 287 transitions. Second operand 11 states. [2020-10-14 23:25:15,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:15,572 INFO L93 Difference]: Finished difference Result 338 states and 391 transitions. [2020-10-14 23:25:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:25:15,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-14 23:25:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:15,575 INFO L225 Difference]: With dead ends: 338 [2020-10-14 23:25:15,575 INFO L226 Difference]: Without dead ends: 299 [2020-10-14 23:25:15,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:25:15,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-14 23:25:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 280. [2020-10-14 23:25:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-14 23:25:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 327 transitions. [2020-10-14 23:25:15,608 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 327 transitions. Word has length 41 [2020-10-14 23:25:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:15,608 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 327 transitions. [2020-10-14 23:25:15,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:25:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 327 transitions. [2020-10-14 23:25:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:25:15,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:15,610 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:15,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:25:15,610 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:15,610 INFO L82 PathProgramCache]: Analyzing trace with hash -165275755, now seen corresponding path program 3 times [2020-10-14 23:25:15,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:15,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717887742] [2020-10-14 23:25:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:15,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:16,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:16,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:25:16,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:16,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-14 23:25:16,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:16,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:16,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:16,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:16,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:16,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:16,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:16,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:16,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:16,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:16,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:16,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717887742] [2020-10-14 23:25:16,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:16,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:16,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991689172] [2020-10-14 23:25:16,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:16,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:16,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:16,686 INFO L87 Difference]: Start difference. First operand 280 states and 327 transitions. Second operand 13 states. [2020-10-14 23:25:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:17,466 INFO L93 Difference]: Finished difference Result 405 states and 472 transitions. [2020-10-14 23:25:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:17,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 23:25:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:17,468 INFO L225 Difference]: With dead ends: 405 [2020-10-14 23:25:17,468 INFO L226 Difference]: Without dead ends: 354 [2020-10-14 23:25:17,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-14 23:25:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2020-10-14 23:25:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-14 23:25:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 361 transitions. [2020-10-14 23:25:17,496 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 361 transitions. Word has length 41 [2020-10-14 23:25:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:17,496 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 361 transitions. [2020-10-14 23:25:17,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 361 transitions. [2020-10-14 23:25:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:25:17,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:17,497 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:17,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:25:17,498 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:17,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1502363129, now seen corresponding path program 1 times [2020-10-14 23:25:17,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:17,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013474099] [2020-10-14 23:25:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:17,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:17,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:17,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:25:17,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-14 23:25:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:17,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:18,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:18,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013474099] [2020-10-14 23:25:18,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:18,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:18,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193602424] [2020-10-14 23:25:18,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:18,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:18,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:18,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:18,224 INFO L87 Difference]: Start difference. First operand 309 states and 361 transitions. Second operand 12 states. [2020-10-14 23:25:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:18,810 INFO L93 Difference]: Finished difference Result 382 states and 438 transitions. [2020-10-14 23:25:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:25:18,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-14 23:25:18,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:18,812 INFO L225 Difference]: With dead ends: 382 [2020-10-14 23:25:18,812 INFO L226 Difference]: Without dead ends: 371 [2020-10-14 23:25:18,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-14 23:25:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 309. [2020-10-14 23:25:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-14 23:25:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 360 transitions. [2020-10-14 23:25:18,836 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 360 transitions. Word has length 42 [2020-10-14 23:25:18,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:18,837 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 360 transitions. [2020-10-14 23:25:18,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 360 transitions. [2020-10-14 23:25:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:25:18,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:18,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:18,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:25:18,838 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash 735757094, now seen corresponding path program 1 times [2020-10-14 23:25:18,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:18,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743779295] [2020-10-14 23:25:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:19,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:25:19,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-14 23:25:19,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:19,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:25:19,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:19,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:19,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:19,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:19,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:19,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:19,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:19,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743779295] [2020-10-14 23:25:19,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:19,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:25:19,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478707478] [2020-10-14 23:25:19,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:25:19,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:19,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:25:19,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:25:19,544 INFO L87 Difference]: Start difference. First operand 309 states and 360 transitions. Second operand 10 states. [2020-10-14 23:25:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:19,964 INFO L93 Difference]: Finished difference Result 349 states and 401 transitions. [2020-10-14 23:25:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:25:19,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-14 23:25:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:19,967 INFO L225 Difference]: With dead ends: 349 [2020-10-14 23:25:19,967 INFO L226 Difference]: Without dead ends: 347 [2020-10-14 23:25:19,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-14 23:25:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 311. [2020-10-14 23:25:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-14 23:25:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 362 transitions. [2020-10-14 23:25:19,989 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 362 transitions. Word has length 43 [2020-10-14 23:25:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:19,989 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 362 transitions. [2020-10-14 23:25:19,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:25:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 362 transitions. [2020-10-14 23:25:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:25:19,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:19,991 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:19,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:25:19,991 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:19,991 INFO L82 PathProgramCache]: Analyzing trace with hash -656020570, now seen corresponding path program 1 times [2020-10-14 23:25:19,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:19,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944861822] [2020-10-14 23:25:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:20,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:25:20,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-14 23:25:20,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:20,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:25:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:20,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:20,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:20,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:20,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:20,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:20,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944861822] [2020-10-14 23:25:20,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:20,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:20,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004995428] [2020-10-14 23:25:20,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:20,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:20,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:20,884 INFO L87 Difference]: Start difference. First operand 311 states and 362 transitions. Second operand 13 states. [2020-10-14 23:25:21,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:21,522 INFO L93 Difference]: Finished difference Result 375 states and 430 transitions. [2020-10-14 23:25:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:21,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-14 23:25:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:21,525 INFO L225 Difference]: With dead ends: 375 [2020-10-14 23:25:21,525 INFO L226 Difference]: Without dead ends: 373 [2020-10-14 23:25:21,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:25:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-14 23:25:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 305. [2020-10-14 23:25:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-14 23:25:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 356 transitions. [2020-10-14 23:25:21,552 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 356 transitions. Word has length 43 [2020-10-14 23:25:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:21,553 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 356 transitions. [2020-10-14 23:25:21,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 356 transitions. [2020-10-14 23:25:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:25:21,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:21,554 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:21,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:25:21,554 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:21,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1181429678, now seen corresponding path program 4 times [2020-10-14 23:25:21,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:21,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411762862] [2020-10-14 23:25:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:25:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-14 23:25:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:21,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:25:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:22,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:22,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411762862] [2020-10-14 23:25:22,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:22,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:22,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870619802] [2020-10-14 23:25:22,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:22,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:22,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:22,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:22,275 INFO L87 Difference]: Start difference. First operand 305 states and 356 transitions. Second operand 14 states. [2020-10-14 23:25:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:23,307 INFO L93 Difference]: Finished difference Result 392 states and 457 transitions. [2020-10-14 23:25:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:25:23,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 23:25:23,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:23,310 INFO L225 Difference]: With dead ends: 392 [2020-10-14 23:25:23,310 INFO L226 Difference]: Without dead ends: 390 [2020-10-14 23:25:23,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-14 23:25:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 296. [2020-10-14 23:25:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-14 23:25:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 347 transitions. [2020-10-14 23:25:23,334 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 347 transitions. Word has length 43 [2020-10-14 23:25:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:23,334 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 347 transitions. [2020-10-14 23:25:23,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:23,334 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 347 transitions. [2020-10-14 23:25:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:25:23,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:23,335 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:23,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:25:23,335 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:23,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1271324677, now seen corresponding path program 2 times [2020-10-14 23:25:23,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:23,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695102179] [2020-10-14 23:25:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:23,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:23,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:23,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:23,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:23,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:23,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:24,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695102179] [2020-10-14 23:25:24,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:24,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:24,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741715098] [2020-10-14 23:25:24,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:24,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:24,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:24,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:24,017 INFO L87 Difference]: Start difference. First operand 296 states and 347 transitions. Second operand 13 states. [2020-10-14 23:25:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:24,657 INFO L93 Difference]: Finished difference Result 383 states and 444 transitions. [2020-10-14 23:25:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:24,658 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-14 23:25:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:24,659 INFO L225 Difference]: With dead ends: 383 [2020-10-14 23:25:24,660 INFO L226 Difference]: Without dead ends: 330 [2020-10-14 23:25:24,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-14 23:25:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 272. [2020-10-14 23:25:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-14 23:25:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 318 transitions. [2020-10-14 23:25:24,685 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 318 transitions. Word has length 44 [2020-10-14 23:25:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:24,685 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 318 transitions. [2020-10-14 23:25:24,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 318 transitions. [2020-10-14 23:25:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:25:24,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:24,686 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:24,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:25:24,687 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:24,687 INFO L82 PathProgramCache]: Analyzing trace with hash 11441438, now seen corresponding path program 3 times [2020-10-14 23:25:24,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:24,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000788591] [2020-10-14 23:25:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:25,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:25:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:25,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:25,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000788591] [2020-10-14 23:25:25,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:25,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:25,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598146032] [2020-10-14 23:25:25,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:25,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:25,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:25,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:25,655 INFO L87 Difference]: Start difference. First operand 272 states and 318 transitions. Second operand 13 states. [2020-10-14 23:25:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:26,406 INFO L93 Difference]: Finished difference Result 348 states and 404 transitions. [2020-10-14 23:25:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:26,407 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-14 23:25:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:26,409 INFO L225 Difference]: With dead ends: 348 [2020-10-14 23:25:26,409 INFO L226 Difference]: Without dead ends: 346 [2020-10-14 23:25:26,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:25:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-14 23:25:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 300. [2020-10-14 23:25:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-14 23:25:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 350 transitions. [2020-10-14 23:25:26,432 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 350 transitions. Word has length 44 [2020-10-14 23:25:26,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:26,432 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 350 transitions. [2020-10-14 23:25:26,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 350 transitions. [2020-10-14 23:25:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:25:26,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:26,433 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:26,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:25:26,434 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:26,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1517313178, now seen corresponding path program 5 times [2020-10-14 23:25:26,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:26,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587545410] [2020-10-14 23:25:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:26,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:25:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:26,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:26,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:26,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587545410] [2020-10-14 23:25:26,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:26,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:26,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970986140] [2020-10-14 23:25:26,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:26,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:26,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:26,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:26,906 INFO L87 Difference]: Start difference. First operand 300 states and 350 transitions. Second operand 13 states. [2020-10-14 23:25:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:27,943 INFO L93 Difference]: Finished difference Result 405 states and 471 transitions. [2020-10-14 23:25:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:27,944 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-14 23:25:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:27,945 INFO L225 Difference]: With dead ends: 405 [2020-10-14 23:25:27,945 INFO L226 Difference]: Without dead ends: 403 [2020-10-14 23:25:27,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:25:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-14 23:25:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 337. [2020-10-14 23:25:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-14 23:25:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 394 transitions. [2020-10-14 23:25:27,971 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 394 transitions. Word has length 45 [2020-10-14 23:25:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:27,971 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 394 transitions. [2020-10-14 23:25:27,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 394 transitions. [2020-10-14 23:25:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:25:27,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:27,972 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:27,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:25:27,973 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1908103252, now seen corresponding path program 4 times [2020-10-14 23:25:27,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:27,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050434243] [2020-10-14 23:25:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:29,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-14 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:25:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:29,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:29,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:29,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:29,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:29,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:29,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:29,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:29,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:29,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:29,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:29,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050434243] [2020-10-14 23:25:29,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:29,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:29,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961913993] [2020-10-14 23:25:29,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:29,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:29,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:29,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:29,437 INFO L87 Difference]: Start difference. First operand 337 states and 394 transitions. Second operand 13 states. [2020-10-14 23:25:29,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:29,870 INFO L93 Difference]: Finished difference Result 492 states and 575 transitions. [2020-10-14 23:25:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:25:29,871 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-14 23:25:29,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:29,873 INFO L225 Difference]: With dead ends: 492 [2020-10-14 23:25:29,873 INFO L226 Difference]: Without dead ends: 370 [2020-10-14 23:25:29,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-14 23:25:29,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 312. [2020-10-14 23:25:29,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-14 23:25:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 361 transitions. [2020-10-14 23:25:29,905 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 361 transitions. Word has length 45 [2020-10-14 23:25:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:29,906 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 361 transitions. [2020-10-14 23:25:29,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 361 transitions. [2020-10-14 23:25:29,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:25:29,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:29,910 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:25:29,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:25:29,911 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:29,911 INFO L82 PathProgramCache]: Analyzing trace with hash -73967350, now seen corresponding path program 1 times [2020-10-14 23:25:29,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:29,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137962753] [2020-10-14 23:25:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:25:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 23:25:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:25:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:30,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:30,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:30,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:30,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:30,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137962753] [2020-10-14 23:25:30,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:30,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:30,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487629424] [2020-10-14 23:25:30,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:30,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:30,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:30,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:30,550 INFO L87 Difference]: Start difference. First operand 312 states and 361 transitions. Second operand 13 states. [2020-10-14 23:25:31,139 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-14 23:25:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:31,413 INFO L93 Difference]: Finished difference Result 387 states and 440 transitions. [2020-10-14 23:25:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:31,414 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 23:25:31,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:31,416 INFO L225 Difference]: With dead ends: 387 [2020-10-14 23:25:31,416 INFO L226 Difference]: Without dead ends: 362 [2020-10-14 23:25:31,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-14 23:25:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 324. [2020-10-14 23:25:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-14 23:25:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 374 transitions. [2020-10-14 23:25:31,441 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 374 transitions. Word has length 46 [2020-10-14 23:25:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:31,441 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 374 transitions. [2020-10-14 23:25:31,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 374 transitions. [2020-10-14 23:25:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:25:31,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:31,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:31,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:25:31,443 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:31,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:31,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2001488113, now seen corresponding path program 1 times [2020-10-14 23:25:31,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:31,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219110424] [2020-10-14 23:25:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:31,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:25:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 23:25:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:31,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:25:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:32,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:32,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:32,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:32,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:32,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:32,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:32,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:32,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:32,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219110424] [2020-10-14 23:25:32,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:32,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:32,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42357391] [2020-10-14 23:25:32,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:32,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:32,195 INFO L87 Difference]: Start difference. First operand 324 states and 374 transitions. Second operand 13 states. [2020-10-14 23:25:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:32,757 INFO L93 Difference]: Finished difference Result 360 states and 410 transitions. [2020-10-14 23:25:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:25:32,757 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-10-14 23:25:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:32,759 INFO L225 Difference]: With dead ends: 360 [2020-10-14 23:25:32,759 INFO L226 Difference]: Without dead ends: 358 [2020-10-14 23:25:32,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-14 23:25:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 328. [2020-10-14 23:25:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-14 23:25:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 378 transitions. [2020-10-14 23:25:32,782 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 378 transitions. Word has length 47 [2020-10-14 23:25:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:32,782 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 378 transitions. [2020-10-14 23:25:32,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:32,782 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 378 transitions. [2020-10-14 23:25:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:25:32,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:32,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:25:32,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:25:32,784 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:32,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:32,784 INFO L82 PathProgramCache]: Analyzing trace with hash 565089903, now seen corresponding path program 1 times [2020-10-14 23:25:32,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:32,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945119299] [2020-10-14 23:25:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:32,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:33,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:33,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:25:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:33,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:33,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:33,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:33,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:33,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:33,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:33,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945119299] [2020-10-14 23:25:33,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:33,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:25:33,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780470493] [2020-10-14 23:25:33,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:25:33,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:33,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:25:33,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:25:33,911 INFO L87 Difference]: Start difference. First operand 328 states and 378 transitions. Second operand 11 states. [2020-10-14 23:25:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:34,575 INFO L93 Difference]: Finished difference Result 376 states and 429 transitions. [2020-10-14 23:25:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:25:34,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-14 23:25:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:34,577 INFO L225 Difference]: With dead ends: 376 [2020-10-14 23:25:34,578 INFO L226 Difference]: Without dead ends: 348 [2020-10-14 23:25:34,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-14 23:25:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 331. [2020-10-14 23:25:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-14 23:25:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 381 transitions. [2020-10-14 23:25:34,610 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 381 transitions. Word has length 47 [2020-10-14 23:25:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:34,610 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 381 transitions. [2020-10-14 23:25:34,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:25:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 381 transitions. [2020-10-14 23:25:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:25:34,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:34,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:25:34,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:25:34,612 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:34,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1374436529, now seen corresponding path program 1 times [2020-10-14 23:25:34,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:34,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399204586] [2020-10-14 23:25:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:34,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:25:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 23:25:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:34,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:25:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:35,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:35,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399204586] [2020-10-14 23:25:35,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:35,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:35,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207863539] [2020-10-14 23:25:35,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:35,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:35,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:35,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:35,356 INFO L87 Difference]: Start difference. First operand 331 states and 381 transitions. Second operand 14 states. [2020-10-14 23:25:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:36,488 INFO L93 Difference]: Finished difference Result 392 states and 446 transitions. [2020-10-14 23:25:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:36,489 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-14 23:25:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:36,491 INFO L225 Difference]: With dead ends: 392 [2020-10-14 23:25:36,491 INFO L226 Difference]: Without dead ends: 390 [2020-10-14 23:25:36,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:25:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-14 23:25:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 337. [2020-10-14 23:25:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-14 23:25:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 388 transitions. [2020-10-14 23:25:36,521 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 388 transitions. Word has length 47 [2020-10-14 23:25:36,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:36,521 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 388 transitions. [2020-10-14 23:25:36,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 388 transitions. [2020-10-14 23:25:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:25:36,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:36,522 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:36,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:25:36,522 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1525688023, now seen corresponding path program 4 times [2020-10-14 23:25:36,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:36,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640524806] [2020-10-14 23:25:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:37,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:37,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:25:37,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-14 23:25:37,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:37,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:25:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:37,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:37,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:37,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:37,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640524806] [2020-10-14 23:25:37,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:37,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:37,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266520515] [2020-10-14 23:25:37,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:37,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:37,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:37,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:37,542 INFO L87 Difference]: Start difference. First operand 337 states and 388 transitions. Second operand 14 states. [2020-10-14 23:25:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:38,450 INFO L93 Difference]: Finished difference Result 396 states and 457 transitions. [2020-10-14 23:25:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:38,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-14 23:25:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:38,453 INFO L225 Difference]: With dead ends: 396 [2020-10-14 23:25:38,454 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 23:25:38,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:25:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 23:25:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 344. [2020-10-14 23:25:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-14 23:25:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 397 transitions. [2020-10-14 23:25:38,479 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 397 transitions. Word has length 48 [2020-10-14 23:25:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:38,479 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 397 transitions. [2020-10-14 23:25:38,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 397 transitions. [2020-10-14 23:25:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:25:38,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:38,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:38,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:25:38,481 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:38,481 INFO L82 PathProgramCache]: Analyzing trace with hash 451613572, now seen corresponding path program 1 times [2020-10-14 23:25:38,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:38,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026918571] [2020-10-14 23:25:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:38,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:25:38,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 23:25:38,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:38,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:25:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:39,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:39,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026918571] [2020-10-14 23:25:39,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:39,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:39,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644996814] [2020-10-14 23:25:39,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:39,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:39,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:39,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:39,132 INFO L87 Difference]: Start difference. First operand 344 states and 397 transitions. Second operand 13 states. [2020-10-14 23:25:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:40,290 INFO L93 Difference]: Finished difference Result 395 states and 449 transitions. [2020-10-14 23:25:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:25:40,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-14 23:25:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:40,293 INFO L225 Difference]: With dead ends: 395 [2020-10-14 23:25:40,293 INFO L226 Difference]: Without dead ends: 393 [2020-10-14 23:25:40,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:25:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-14 23:25:40,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 372. [2020-10-14 23:25:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-14 23:25:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 427 transitions. [2020-10-14 23:25:40,331 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 427 transitions. Word has length 48 [2020-10-14 23:25:40,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:40,332 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 427 transitions. [2020-10-14 23:25:40,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 427 transitions. [2020-10-14 23:25:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:25:40,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:40,333 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:25:40,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:25:40,333 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:40,334 INFO L82 PathProgramCache]: Analyzing trace with hash -342631894, now seen corresponding path program 1 times [2020-10-14 23:25:40,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:40,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517962833] [2020-10-14 23:25:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:40,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:25:40,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-14 23:25:40,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:40,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:25:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:41,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:41,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:41,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:41,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:41,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:41,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517962833] [2020-10-14 23:25:41,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:41,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:41,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625046281] [2020-10-14 23:25:41,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:41,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:41,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:41,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:41,178 INFO L87 Difference]: Start difference. First operand 372 states and 427 transitions. Second operand 14 states. [2020-10-14 23:25:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:42,053 INFO L93 Difference]: Finished difference Result 425 states and 483 transitions. [2020-10-14 23:25:42,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:42,054 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-14 23:25:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:42,056 INFO L225 Difference]: With dead ends: 425 [2020-10-14 23:25:42,056 INFO L226 Difference]: Without dead ends: 414 [2020-10-14 23:25:42,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:25:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-14 23:25:42,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 372. [2020-10-14 23:25:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-14 23:25:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 426 transitions. [2020-10-14 23:25:42,083 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 426 transitions. Word has length 48 [2020-10-14 23:25:42,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:42,083 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 426 transitions. [2020-10-14 23:25:42,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 426 transitions. [2020-10-14 23:25:42,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:25:42,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:42,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:42,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:25:42,084 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash -715139115, now seen corresponding path program 1 times [2020-10-14 23:25:42,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:42,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742369341] [2020-10-14 23:25:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:25:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-14 23:25:42,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:42,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:25:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:43,117 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-14 23:25:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:43,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:43,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:43,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:43,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742369341] [2020-10-14 23:25:43,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:43,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:43,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945041451] [2020-10-14 23:25:43,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:43,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:43,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:43,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:43,285 INFO L87 Difference]: Start difference. First operand 372 states and 426 transitions. Second operand 13 states. [2020-10-14 23:25:44,125 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-14 23:25:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:44,438 INFO L93 Difference]: Finished difference Result 391 states and 444 transitions. [2020-10-14 23:25:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:25:44,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-14 23:25:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:44,440 INFO L225 Difference]: With dead ends: 391 [2020-10-14 23:25:44,440 INFO L226 Difference]: Without dead ends: 389 [2020-10-14 23:25:44,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:25:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-14 23:25:44,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 354. [2020-10-14 23:25:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-14 23:25:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 406 transitions. [2020-10-14 23:25:44,478 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 406 transitions. Word has length 49 [2020-10-14 23:25:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:44,479 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 406 transitions. [2020-10-14 23:25:44,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 406 transitions. [2020-10-14 23:25:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:25:44,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:44,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:44,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:25:44,480 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:44,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2016291435, now seen corresponding path program 1 times [2020-10-14 23:25:44,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:44,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460180989] [2020-10-14 23:25:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:25:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-14 23:25:45,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:45,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:25:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:45,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:45,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:45,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:45,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460180989] [2020-10-14 23:25:45,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:45,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:45,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359888383] [2020-10-14 23:25:45,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:45,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:45,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:45,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:45,484 INFO L87 Difference]: Start difference. First operand 354 states and 406 transitions. Second operand 14 states. [2020-10-14 23:25:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:46,510 INFO L93 Difference]: Finished difference Result 416 states and 472 transitions. [2020-10-14 23:25:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:25:46,510 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-14 23:25:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:46,512 INFO L225 Difference]: With dead ends: 416 [2020-10-14 23:25:46,513 INFO L226 Difference]: Without dead ends: 414 [2020-10-14 23:25:46,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:25:46,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-14 23:25:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 348. [2020-10-14 23:25:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-14 23:25:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 400 transitions. [2020-10-14 23:25:46,549 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 400 transitions. Word has length 49 [2020-10-14 23:25:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:46,549 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 400 transitions. [2020-10-14 23:25:46,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 400 transitions. [2020-10-14 23:25:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:25:46,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:46,551 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:46,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:25:46,551 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:46,551 INFO L82 PathProgramCache]: Analyzing trace with hash -315994115, now seen corresponding path program 6 times [2020-10-14 23:25:46,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:46,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747220052] [2020-10-14 23:25:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:46,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:46,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:25:46,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-14 23:25:46,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:46,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:25:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:47,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:47,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747220052] [2020-10-14 23:25:47,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:47,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:25:47,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525740336] [2020-10-14 23:25:47,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:25:47,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:47,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:25:47,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:47,285 INFO L87 Difference]: Start difference. First operand 348 states and 400 transitions. Second operand 15 states. [2020-10-14 23:25:48,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:48,876 INFO L93 Difference]: Finished difference Result 485 states and 558 transitions. [2020-10-14 23:25:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:25:48,877 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-10-14 23:25:48,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:48,879 INFO L225 Difference]: With dead ends: 485 [2020-10-14 23:25:48,879 INFO L226 Difference]: Without dead ends: 483 [2020-10-14 23:25:48,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:25:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-14 23:25:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 342. [2020-10-14 23:25:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-14 23:25:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 398 transitions. [2020-10-14 23:25:48,904 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 398 transitions. Word has length 49 [2020-10-14 23:25:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:48,904 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 398 transitions. [2020-10-14 23:25:48,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:25:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 398 transitions. [2020-10-14 23:25:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:25:48,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:48,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:48,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:25:48,905 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash 209078696, now seen corresponding path program 1 times [2020-10-14 23:25:48,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:48,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912633587] [2020-10-14 23:25:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:25:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,583 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-14 23:25:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:49,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912633587] [2020-10-14 23:25:49,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:49,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:49,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125913953] [2020-10-14 23:25:49,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:49,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:49,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:49,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:49,764 INFO L87 Difference]: Start difference. First operand 342 states and 398 transitions. Second operand 12 states. [2020-10-14 23:25:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:51,227 INFO L93 Difference]: Finished difference Result 380 states and 437 transitions. [2020-10-14 23:25:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:25:51,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-14 23:25:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:51,230 INFO L225 Difference]: With dead ends: 380 [2020-10-14 23:25:51,230 INFO L226 Difference]: Without dead ends: 378 [2020-10-14 23:25:51,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:25:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-14 23:25:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 339. [2020-10-14 23:25:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-14 23:25:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 395 transitions. [2020-10-14 23:25:51,254 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 395 transitions. Word has length 50 [2020-10-14 23:25:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:51,255 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 395 transitions. [2020-10-14 23:25:51,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 395 transitions. [2020-10-14 23:25:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:25:51,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:51,256 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:25:51,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:25:51,256 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:51,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2036485783, now seen corresponding path program 1 times [2020-10-14 23:25:51,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:51,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533108569] [2020-10-14 23:25:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:25:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 23:25:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:51,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:25:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:52,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:52,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:52,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:52,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:52,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:52,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:52,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533108569] [2020-10-14 23:25:52,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:52,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:25:52,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77135064] [2020-10-14 23:25:52,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:25:52,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:25:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:52,275 INFO L87 Difference]: Start difference. First operand 339 states and 395 transitions. Second operand 15 states. [2020-10-14 23:25:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:53,368 INFO L93 Difference]: Finished difference Result 451 states and 523 transitions. [2020-10-14 23:25:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:53,368 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 23:25:53,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:53,371 INFO L225 Difference]: With dead ends: 451 [2020-10-14 23:25:53,371 INFO L226 Difference]: Without dead ends: 426 [2020-10-14 23:25:53,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:25:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-14 23:25:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 363. [2020-10-14 23:25:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-14 23:25:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 427 transitions. [2020-10-14 23:25:53,401 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 427 transitions. Word has length 50 [2020-10-14 23:25:53,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:53,401 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 427 transitions. [2020-10-14 23:25:53,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:25:53,401 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 427 transitions. [2020-10-14 23:25:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:25:53,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:53,402 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 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] [2020-10-14 23:25:53,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:25:53,402 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash 772702561, now seen corresponding path program 3 times [2020-10-14 23:25:53,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:53,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218406140] [2020-10-14 23:25:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:53,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:53,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:25:53,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:54,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:54,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:54,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:54,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:54,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:54,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218406140] [2020-10-14 23:25:54,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:54,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:54,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265309493] [2020-10-14 23:25:54,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:54,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:54,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:54,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:54,104 INFO L87 Difference]: Start difference. First operand 363 states and 427 transitions. Second operand 14 states. [2020-10-14 23:25:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:54,969 INFO L93 Difference]: Finished difference Result 489 states and 568 transitions. [2020-10-14 23:25:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:25:54,970 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-14 23:25:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:54,973 INFO L225 Difference]: With dead ends: 489 [2020-10-14 23:25:54,973 INFO L226 Difference]: Without dead ends: 450 [2020-10-14 23:25:54,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-14 23:25:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 391. [2020-10-14 23:25:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 23:25:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 458 transitions. [2020-10-14 23:25:55,001 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 458 transitions. Word has length 51 [2020-10-14 23:25:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:55,001 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 458 transitions. [2020-10-14 23:25:55,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 458 transitions. [2020-10-14 23:25:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:25:55,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:55,002 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:55,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:25:55,002 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:55,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:55,003 INFO L82 PathProgramCache]: Analyzing trace with hash -36644065, now seen corresponding path program 2 times [2020-10-14 23:25:55,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:55,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385903726] [2020-10-14 23:25:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:55,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:55,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:25:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:55,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:55,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:55,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:55,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:55,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:55,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:55,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385903726] [2020-10-14 23:25:55,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:55,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:55,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790931719] [2020-10-14 23:25:55,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:55,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:55,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:55,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:55,936 INFO L87 Difference]: Start difference. First operand 391 states and 458 transitions. Second operand 13 states. [2020-10-14 23:25:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:56,677 INFO L93 Difference]: Finished difference Result 484 states and 562 transitions. [2020-10-14 23:25:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:56,678 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-14 23:25:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:56,681 INFO L225 Difference]: With dead ends: 484 [2020-10-14 23:25:56,681 INFO L226 Difference]: Without dead ends: 438 [2020-10-14 23:25:56,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-14 23:25:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 396. [2020-10-14 23:25:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-14 23:25:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 460 transitions. [2020-10-14 23:25:56,714 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 460 transitions. Word has length 51 [2020-10-14 23:25:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:56,715 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 460 transitions. [2020-10-14 23:25:56,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 460 transitions. [2020-10-14 23:25:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:25:56,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:56,716 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:56,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:25:56,716 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:56,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:56,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1708322298, now seen corresponding path program 5 times [2020-10-14 23:25:56,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:56,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998095275] [2020-10-14 23:25:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:25:57,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:57,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-14 23:25:57,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:25:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:57,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:57,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:57,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998095275] [2020-10-14 23:25:57,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:57,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:57,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551723313] [2020-10-14 23:25:57,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:57,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:57,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:57,873 INFO L87 Difference]: Start difference. First operand 396 states and 460 transitions. Second operand 12 states. [2020-10-14 23:25:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:58,656 INFO L93 Difference]: Finished difference Result 537 states and 619 transitions. [2020-10-14 23:25:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:25:58,657 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-14 23:25:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:58,660 INFO L225 Difference]: With dead ends: 537 [2020-10-14 23:25:58,660 INFO L226 Difference]: Without dead ends: 486 [2020-10-14 23:25:58,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-10-14 23:25:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 417. [2020-10-14 23:25:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-14 23:25:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 481 transitions. [2020-10-14 23:25:58,708 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 481 transitions. Word has length 51 [2020-10-14 23:25:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:58,709 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 481 transitions. [2020-10-14 23:25:58,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 481 transitions. [2020-10-14 23:25:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:25:58,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:58,710 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:25:58,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:25:58,711 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:58,711 INFO L82 PathProgramCache]: Analyzing trace with hash 590429750, now seen corresponding path program 1 times [2020-10-14 23:25:58,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:58,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662150636] [2020-10-14 23:25:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:59,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:59,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:25:59,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-14 23:25:59,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:59,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:25:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:59,780 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-14 23:25:59,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:59,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:59,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:59,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:59,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662150636] [2020-10-14 23:25:59,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:59,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:25:59,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733590284] [2020-10-14 23:25:59,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:25:59,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:59,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:25:59,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:59,889 INFO L87 Difference]: Start difference. First operand 417 states and 481 transitions. Second operand 15 states. [2020-10-14 23:26:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:00,738 INFO L93 Difference]: Finished difference Result 497 states and 566 transitions. [2020-10-14 23:26:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:26:00,738 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-14 23:26:00,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:00,740 INFO L225 Difference]: With dead ends: 497 [2020-10-14 23:26:00,741 INFO L226 Difference]: Without dead ends: 495 [2020-10-14 23:26:00,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-14 23:26:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 435. [2020-10-14 23:26:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-14 23:26:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 502 transitions. [2020-10-14 23:26:00,772 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 502 transitions. Word has length 51 [2020-10-14 23:26:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:00,773 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 502 transitions. [2020-10-14 23:26:00,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 502 transitions. [2020-10-14 23:26:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:26:00,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:00,774 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:26:00,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:26:00,774 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:00,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:00,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2116189644, now seen corresponding path program 1 times [2020-10-14 23:26:00,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:00,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738110794] [2020-10-14 23:26:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:00,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:04,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:04,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:26:04,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:26:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3435 [2020-10-14 23:26:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:04,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:26:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:04,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:26:04,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738110794] [2020-10-14 23:26:04,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:04,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:04,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569274048] [2020-10-14 23:26:04,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:04,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:04,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:04,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:04,593 INFO L87 Difference]: Start difference. First operand 435 states and 502 transitions. Second operand 15 states. [2020-10-14 23:26:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:05,956 INFO L93 Difference]: Finished difference Result 563 states and 643 transitions. [2020-10-14 23:26:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:26:05,957 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-14 23:26:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:05,960 INFO L225 Difference]: With dead ends: 563 [2020-10-14 23:26:05,960 INFO L226 Difference]: Without dead ends: 561 [2020-10-14 23:26:05,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:26:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-14 23:26:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 463. [2020-10-14 23:26:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 23:26:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 541 transitions. [2020-10-14 23:26:05,996 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 541 transitions. Word has length 51 [2020-10-14 23:26:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:05,996 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 541 transitions. [2020-10-14 23:26:05,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 541 transitions. [2020-10-14 23:26:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:26:05,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:05,997 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:26:05,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:26:05,998 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:05,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:05,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1361129202, now seen corresponding path program 1 times [2020-10-14 23:26:05,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:05,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430747579] [2020-10-14 23:26:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:09,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:09,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:26:09,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:26:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3522 [2020-10-14 23:26:09,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:09,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:26:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:09,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:09,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:09,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:09,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:09,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:26:09,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430747579] [2020-10-14 23:26:09,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:09,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:09,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222238637] [2020-10-14 23:26:09,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:09,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:09,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:09,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:09,948 INFO L87 Difference]: Start difference. First operand 463 states and 541 transitions. Second operand 15 states. [2020-10-14 23:26:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:11,207 INFO L93 Difference]: Finished difference Result 556 states and 640 transitions. [2020-10-14 23:26:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:11,207 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-14 23:26:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:11,209 INFO L225 Difference]: With dead ends: 556 [2020-10-14 23:26:11,210 INFO L226 Difference]: Without dead ends: 554 [2020-10-14 23:26:11,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:26:11,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-10-14 23:26:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 461. [2020-10-14 23:26:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-14 23:26:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 538 transitions. [2020-10-14 23:26:11,255 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 538 transitions. Word has length 51 [2020-10-14 23:26:11,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:11,255 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 538 transitions. [2020-10-14 23:26:11,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:11,255 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 538 transitions. [2020-10-14 23:26:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:26:11,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:11,256 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:11,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:26:11,256 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:11,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1293941500, now seen corresponding path program 1 times [2020-10-14 23:26:11,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:11,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900274126] [2020-10-14 23:26:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:11,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:11,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:11,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:26:11,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-14 23:26:11,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:11,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:26:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:12,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:12,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:12,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:12,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:12,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900274126] [2020-10-14 23:26:12,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:12,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:12,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328729003] [2020-10-14 23:26:12,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:12,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:12,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:12,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:12,275 INFO L87 Difference]: Start difference. First operand 461 states and 538 transitions. Second operand 15 states. [2020-10-14 23:26:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:13,305 INFO L93 Difference]: Finished difference Result 522 states and 600 transitions. [2020-10-14 23:26:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:26:13,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-14 23:26:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:13,308 INFO L225 Difference]: With dead ends: 522 [2020-10-14 23:26:13,309 INFO L226 Difference]: Without dead ends: 520 [2020-10-14 23:26:13,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:26:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-14 23:26:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 465. [2020-10-14 23:26:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-14 23:26:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 542 transitions. [2020-10-14 23:26:13,345 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 542 transitions. Word has length 51 [2020-10-14 23:26:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:13,345 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 542 transitions. [2020-10-14 23:26:13,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 542 transitions. [2020-10-14 23:26:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:26:13,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:13,346 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2020-10-14 23:26:13,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:26:13,346 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1014557756, now seen corresponding path program 2 times [2020-10-14 23:26:13,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:13,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132926206] [2020-10-14 23:26:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:26:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:14,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:14,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:14,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:14,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:14,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132926206] [2020-10-14 23:26:14,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:14,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:14,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809333913] [2020-10-14 23:26:14,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:14,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:14,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:14,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:14,186 INFO L87 Difference]: Start difference. First operand 465 states and 542 transitions. Second operand 15 states. [2020-10-14 23:26:15,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:15,323 INFO L93 Difference]: Finished difference Result 587 states and 680 transitions. [2020-10-14 23:26:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:26:15,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-14 23:26:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:15,327 INFO L225 Difference]: With dead ends: 587 [2020-10-14 23:26:15,327 INFO L226 Difference]: Without dead ends: 585 [2020-10-14 23:26:15,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:26:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-10-14 23:26:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 492. [2020-10-14 23:26:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-14 23:26:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 577 transitions. [2020-10-14 23:26:15,364 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 577 transitions. Word has length 51 [2020-10-14 23:26:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:15,364 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 577 transitions. [2020-10-14 23:26:15,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 577 transitions. [2020-10-14 23:26:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:26:15,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:15,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:15,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:26:15,366 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:15,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:15,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1517782033, now seen corresponding path program 7 times [2020-10-14 23:26:15,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:15,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169658538] [2020-10-14 23:26:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:15,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:15,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:26:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 23:26:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:15,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:26:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:15,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:15,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:15,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:15,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:15,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:15,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169658538] [2020-10-14 23:26:15,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:15,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:26:15,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700136942] [2020-10-14 23:26:15,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:26:15,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:26:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:26:15,840 INFO L87 Difference]: Start difference. First operand 492 states and 577 transitions. Second operand 13 states. [2020-10-14 23:26:17,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:17,106 INFO L93 Difference]: Finished difference Result 635 states and 746 transitions. [2020-10-14 23:26:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:26:17,106 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-14 23:26:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:17,108 INFO L225 Difference]: With dead ends: 635 [2020-10-14 23:26:17,108 INFO L226 Difference]: Without dead ends: 573 [2020-10-14 23:26:17,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:26:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-10-14 23:26:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 542. [2020-10-14 23:26:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-14 23:26:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 637 transitions. [2020-10-14 23:26:17,149 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 637 transitions. Word has length 51 [2020-10-14 23:26:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:17,149 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 637 transitions. [2020-10-14 23:26:17,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:26:17,149 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 637 transitions. [2020-10-14 23:26:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:17,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:17,151 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:26:17,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 23:26:17,151 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:17,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1122961733, now seen corresponding path program 1 times [2020-10-14 23:26:17,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:17,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878673321] [2020-10-14 23:26:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:17,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:17,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:17,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:26:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:18,319 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-14 23:26:18,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:18,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:18,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:18,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:18,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:18,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878673321] [2020-10-14 23:26:18,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:18,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:18,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142769972] [2020-10-14 23:26:18,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:18,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:18,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:18,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:18,455 INFO L87 Difference]: Start difference. First operand 542 states and 637 transitions. Second operand 15 states. [2020-10-14 23:26:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:19,432 INFO L93 Difference]: Finished difference Result 628 states and 727 transitions. [2020-10-14 23:26:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:26:19,433 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-14 23:26:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:19,436 INFO L225 Difference]: With dead ends: 628 [2020-10-14 23:26:19,436 INFO L226 Difference]: Without dead ends: 617 [2020-10-14 23:26:19,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:26:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-14 23:26:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 555. [2020-10-14 23:26:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-10-14 23:26:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 651 transitions. [2020-10-14 23:26:19,479 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 651 transitions. Word has length 52 [2020-10-14 23:26:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:19,479 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 651 transitions. [2020-10-14 23:26:19,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 651 transitions. [2020-10-14 23:26:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:19,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:19,480 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:19,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 23:26:19,480 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1180220035, now seen corresponding path program 1 times [2020-10-14 23:26:19,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:19,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51311573] [2020-10-14 23:26:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:20,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:20,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:20,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:26:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-14 23:26:20,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:20,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:26:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:26:20,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:20,767 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-10-14 23:26:20,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:20,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:20,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:26:20,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51311573] [2020-10-14 23:26:20,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:20,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:26:20,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441524641] [2020-10-14 23:26:20,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:26:20,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:20,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:26:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:26:20,847 INFO L87 Difference]: Start difference. First operand 555 states and 651 transitions. Second operand 12 states. [2020-10-14 23:26:21,551 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-14 23:26:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:21,955 INFO L93 Difference]: Finished difference Result 733 states and 839 transitions. [2020-10-14 23:26:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:26:21,956 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-14 23:26:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:21,958 INFO L225 Difference]: With dead ends: 733 [2020-10-14 23:26:21,958 INFO L226 Difference]: Without dead ends: 703 [2020-10-14 23:26:21,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:26:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-14 23:26:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 603. [2020-10-14 23:26:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-14 23:26:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 701 transitions. [2020-10-14 23:26:22,006 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 701 transitions. Word has length 52 [2020-10-14 23:26:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:22,006 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 701 transitions. [2020-10-14 23:26:22,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:26:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 701 transitions. [2020-10-14 23:26:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:22,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:22,007 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:26:22,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 23:26:22,007 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:22,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1177860857, now seen corresponding path program 1 times [2020-10-14 23:26:22,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:22,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386539841] [2020-10-14 23:26:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:22,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:24,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:26:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2392 [2020-10-14 23:26:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:24,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:26:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:24,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:24,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:26:24,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386539841] [2020-10-14 23:26:24,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:24,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:24,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241930532] [2020-10-14 23:26:24,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:24,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:24,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:24,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:24,791 INFO L87 Difference]: Start difference. First operand 603 states and 701 transitions. Second operand 15 states. [2020-10-14 23:26:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:26,061 INFO L93 Difference]: Finished difference Result 680 states and 782 transitions. [2020-10-14 23:26:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:26,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-14 23:26:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:26,064 INFO L225 Difference]: With dead ends: 680 [2020-10-14 23:26:26,065 INFO L226 Difference]: Without dead ends: 669 [2020-10-14 23:26:26,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:26:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-10-14 23:26:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 615. [2020-10-14 23:26:26,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-10-14 23:26:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 714 transitions. [2020-10-14 23:26:26,113 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 714 transitions. Word has length 52 [2020-10-14 23:26:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:26,113 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 714 transitions. [2020-10-14 23:26:26,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 714 transitions. [2020-10-14 23:26:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:26,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:26,114 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:26,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 23:26:26,114 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:26,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1120602555, now seen corresponding path program 1 times [2020-10-14 23:26:26,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:26,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516206775] [2020-10-14 23:26:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:30,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:30,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 23:26:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4498 [2020-10-14 23:26:30,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:30,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:26:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:26:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:30,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:30,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:30,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:30,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:30,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:26:30,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516206775] [2020-10-14 23:26:30,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:30,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:26:30,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067559767] [2020-10-14 23:26:30,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:26:30,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:30,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:26:30,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:26:30,743 INFO L87 Difference]: Start difference. First operand 615 states and 714 transitions. Second operand 11 states. [2020-10-14 23:26:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:31,364 INFO L93 Difference]: Finished difference Result 741 states and 846 transitions. [2020-10-14 23:26:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:26:31,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-14 23:26:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:31,367 INFO L225 Difference]: With dead ends: 741 [2020-10-14 23:26:31,367 INFO L226 Difference]: Without dead ends: 712 [2020-10-14 23:26:31,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:31,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-14 23:26:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 567. [2020-10-14 23:26:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-14 23:26:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 662 transitions. [2020-10-14 23:26:31,416 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 662 transitions. Word has length 52 [2020-10-14 23:26:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:31,416 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 662 transitions. [2020-10-14 23:26:31,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:26:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 662 transitions. [2020-10-14 23:26:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:31,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:31,417 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:31,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 23:26:31,417 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:31,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:31,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1716826578, now seen corresponding path program 6 times [2020-10-14 23:26:31,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:31,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172859276] [2020-10-14 23:26:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:32,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:26:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-10-14 23:26:32,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:26:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:33,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:33,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:26:33,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172859276] [2020-10-14 23:26:33,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:33,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:26:33,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252390291] [2020-10-14 23:26:33,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:26:33,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:33,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:26:33,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:26:33,317 INFO L87 Difference]: Start difference. First operand 567 states and 662 transitions. Second operand 14 states. [2020-10-14 23:26:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:34,114 INFO L93 Difference]: Finished difference Result 702 states and 826 transitions. [2020-10-14 23:26:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:26:34,115 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-14 23:26:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:34,117 INFO L225 Difference]: With dead ends: 702 [2020-10-14 23:26:34,117 INFO L226 Difference]: Without dead ends: 600 [2020-10-14 23:26:34,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:26:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-10-14 23:26:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 560. [2020-10-14 23:26:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-14 23:26:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 653 transitions. [2020-10-14 23:26:34,166 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 653 transitions. Word has length 52 [2020-10-14 23:26:34,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:34,166 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 653 transitions. [2020-10-14 23:26:34,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:26:34,166 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 653 transitions. [2020-10-14 23:26:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:34,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:34,168 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:34,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 23:26:34,168 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:34,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:34,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1014658163, now seen corresponding path program 1 times [2020-10-14 23:26:34,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:34,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818581873] [2020-10-14 23:26:34,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:34,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:26:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:34,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:34,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:34,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:34,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:34,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:34,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818581873] [2020-10-14 23:26:34,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:34,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:34,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899533306] [2020-10-14 23:26:34,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:34,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:34,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:34,871 INFO L87 Difference]: Start difference. First operand 560 states and 653 transitions. Second operand 15 states. [2020-10-14 23:26:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:35,860 INFO L93 Difference]: Finished difference Result 641 states and 735 transitions. [2020-10-14 23:26:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:35,860 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-14 23:26:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:35,862 INFO L225 Difference]: With dead ends: 641 [2020-10-14 23:26:35,863 INFO L226 Difference]: Without dead ends: 639 [2020-10-14 23:26:35,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:26:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-14 23:26:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 583. [2020-10-14 23:26:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-10-14 23:26:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 676 transitions. [2020-10-14 23:26:35,921 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 676 transitions. Word has length 52 [2020-10-14 23:26:35,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:35,921 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 676 transitions. [2020-10-14 23:26:35,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 676 transitions. [2020-10-14 23:26:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:35,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:35,922 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2020-10-14 23:26:35,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 23:26:35,923 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1387010697, now seen corresponding path program 2 times [2020-10-14 23:26:35,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:35,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971882015] [2020-10-14 23:26:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:36,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:36,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:36,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-14 23:26:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:36,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:26:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:36,675 ERROR L253 erpolLogProxyWrapper]: Interpolant 40 not inductive [2020-10-14 23:26:36,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-14 23:26:36,678 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 23:26:36,682 INFO L168 Benchmark]: Toolchain (without parser) took 134789.95 ms. Allocated memory was 138.9 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 99.3 MB in the beginning and 223.4 MB in the end (delta: -124.1 MB). Peak memory consumption was 897.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:26:36,683 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 119.1 MB in the beginning and 118.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:26:36,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.85 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 168.5 MB in the end (delta: -69.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:26:36,683 INFO L168 Benchmark]: Boogie Preprocessor took 92.39 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 165.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:26:36,684 INFO L168 Benchmark]: RCFGBuilder took 724.74 ms. Allocated memory is still 202.4 MB. Free memory was 165.3 MB in the beginning and 113.0 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:26:36,684 INFO L168 Benchmark]: TraceAbstraction took 133368.99 ms. Allocated memory was 202.4 MB in the beginning and 1.2 GB in the end (delta: 957.9 MB). Free memory was 113.0 MB in the beginning and 223.4 MB in the end (delta: -110.4 MB). Peak memory consumption was 847.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:26:36,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 119.1 MB in the beginning and 118.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 598.85 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 168.5 MB in the end (delta: -69.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.39 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 165.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.74 ms. Allocated memory is still 202.4 MB. Free memory was 165.3 MB in the beginning and 113.0 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 133368.99 ms. Allocated memory was 202.4 MB in the beginning and 1.2 GB in the end (delta: 957.9 MB). Free memory was 113.0 MB in the beginning and 223.4 MB in the end (delta: -110.4 MB). Peak memory consumption was 847.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...