/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/ssh-simplified/s3_srvr_6.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:44:54,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:44:54,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:44:54,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:44:54,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:44:54,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:44:54,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:44:54,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:44:54,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:44:54,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:44:54,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:44:54,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:44:54,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:44:54,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:44:54,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:44:54,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:44:54,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:44:54,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:44:54,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:44:54,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:44:54,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:44:54,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:44:54,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:44:54,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:44:54,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:44:54,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:44:54,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:44:54,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:44:54,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:44:54,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:44:54,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:44:54,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:44:54,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:44:54,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:44:54,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:44:54,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:44:54,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:44:54,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:44:54,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:44:54,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:44:54,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:44:54,983 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 [2020-10-15 04:44:55,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:44:55,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:44:55,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:44:55,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:44:55,008 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:44:55,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:44:55,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:44:55,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:44:55,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:44:55,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:44:55,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:44:55,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:44:55,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:44:55,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:44:55,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:44:55,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:44:55,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:44:55,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:44:55,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:44:55,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:44:55,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:44:55,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:44:55,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:44:55,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:44:55,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:44:55,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:44:55,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:44:55,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:44:55,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:44:55,014 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; [2020-10-15 04:44:55,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:44:55,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:44:55,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:44:55,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:44:55,358 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:44:55,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_6.cil-2.c [2020-10-15 04:44:55,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a6702f9/d7656c94acf745a3a8921ebad3481d64/FLAGc25f7c14d [2020-10-15 04:44:55,950 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:44:55,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_6.cil-2.c [2020-10-15 04:44:55,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a6702f9/d7656c94acf745a3a8921ebad3481d64/FLAGc25f7c14d [2020-10-15 04:44:56,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a6702f9/d7656c94acf745a3a8921ebad3481d64 [2020-10-15 04:44:56,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:44:56,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:44:56,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:44:56,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:44:56,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:44:56,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f2f270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56, skipping insertion in model container [2020-10-15 04:44:56,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:44:56,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:44:56,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:44:56,657 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:44:56,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:44:56,875 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:44:56,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56 WrapperNode [2020-10-15 04:44:56,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:44:56,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:44:56,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:44:56,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:44:56,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (1/1) ... [2020-10-15 04:44:56,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:44:56,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:44:56,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:44:56,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:44:56,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (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 [2020-10-15 04:44:57,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:44:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:44:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:44:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:44:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:44:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:44:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:44:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:44:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:44:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:44:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:44:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:44:57,225 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:44:57,838 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-15 04:44:57,838 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-15 04:44:57,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:44:57,851 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:44:57,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:44:57 BoogieIcfgContainer [2020-10-15 04:44:57,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:44:57,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:44:57,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:44:57,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:44:57,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:44:56" (1/3) ... [2020-10-15 04:44:57,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f675695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:44:57, skipping insertion in model container [2020-10-15 04:44:57,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:56" (2/3) ... [2020-10-15 04:44:57,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f675695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:44:57, skipping insertion in model container [2020-10-15 04:44:57,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:44:57" (3/3) ... [2020-10-15 04:44:57,865 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_6.cil-2.c [2020-10-15 04:44:57,876 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:44:57,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:44:57,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:44:57,925 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:44:57,926 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:44:57,926 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:44:57,926 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:44:57,926 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:44:57,926 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:44:57,927 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:44:57,927 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:44:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-15 04:44:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 04:44:57,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:57,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:57,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:57,969 INFO L82 PathProgramCache]: Analyzing trace with hash 887093352, now seen corresponding path program 1 times [2020-10-15 04:44:57,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:57,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42628242] [2020-10-15 04:44:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:58,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 04:44:58,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:44:58,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-15 04:44:58,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:58,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:44:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:44:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:44:58,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:44:58,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:58,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:58,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:44:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:44:58,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42628242] [2020-10-15 04:44:58,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:58,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:44:58,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438714710] [2020-10-15 04:44:58,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:44:58,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:58,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:44:58,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:44:58,741 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-10-15 04:44:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:58,949 INFO L93 Difference]: Finished difference Result 465 states and 804 transitions. [2020-10-15 04:44:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:44:58,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-10-15 04:44:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:58,968 INFO L225 Difference]: With dead ends: 465 [2020-10-15 04:44:58,968 INFO L226 Difference]: Without dead ends: 285 [2020-10-15 04:44:58,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:44:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-15 04:44:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2020-10-15 04:44:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-15 04:44:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 431 transitions. [2020-10-15 04:44:59,053 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 431 transitions. Word has length 49 [2020-10-15 04:44:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:59,055 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 431 transitions. [2020-10-15 04:44:59,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:44:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 431 transitions. [2020-10-15 04:44:59,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 04:44:59,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:59,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:59,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:44:59,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:59,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1349717625, now seen corresponding path program 1 times [2020-10-15 04:44:59,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:59,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386002831] [2020-10-15 04:44:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 04:44:59,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:44:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-15 04:44:59,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:59,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:44:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:44:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:44:59,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:59,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:59,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:44:59,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:59,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:59,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:44:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:44:59,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386002831] [2020-10-15 04:44:59,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:59,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:44:59,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232463507] [2020-10-15 04:44:59,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:44:59,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:44:59,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:44:59,474 INFO L87 Difference]: Start difference. First operand 285 states and 431 transitions. Second operand 3 states. [2020-10-15 04:44:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:59,719 INFO L93 Difference]: Finished difference Result 673 states and 1046 transitions. [2020-10-15 04:44:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:44:59,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-10-15 04:44:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:59,724 INFO L225 Difference]: With dead ends: 673 [2020-10-15 04:44:59,724 INFO L226 Difference]: Without dead ends: 377 [2020-10-15 04:44:59,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:44:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-15 04:44:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 367. [2020-10-15 04:44:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-15 04:44:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 545 transitions. [2020-10-15 04:44:59,763 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 545 transitions. Word has length 65 [2020-10-15 04:44:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:59,763 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 545 transitions. [2020-10-15 04:44:59,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:44:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 545 transitions. [2020-10-15 04:44:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 04:44:59,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:59,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:59,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:44:59,771 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:59,772 INFO L82 PathProgramCache]: Analyzing trace with hash -909947593, now seen corresponding path program 1 times [2020-10-15 04:44:59,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:59,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473628379] [2020-10-15 04:44:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:00,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 04:45:00,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:45:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 04:45:00,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:00,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:45:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:45:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:00,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:00,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:00,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:45:00,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473628379] [2020-10-15 04:45:00,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:00,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:00,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050924495] [2020-10-15 04:45:00,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:00,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:00,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:00,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:00,072 INFO L87 Difference]: Start difference. First operand 367 states and 545 transitions. Second operand 3 states. [2020-10-15 04:45:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:00,233 INFO L93 Difference]: Finished difference Result 721 states and 1094 transitions. [2020-10-15 04:45:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:00,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-10-15 04:45:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:00,238 INFO L225 Difference]: With dead ends: 721 [2020-10-15 04:45:00,239 INFO L226 Difference]: Without dead ends: 543 [2020-10-15 04:45:00,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-10-15 04:45:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2020-10-15 04:45:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-15 04:45:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 800 transitions. [2020-10-15 04:45:00,265 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 800 transitions. Word has length 86 [2020-10-15 04:45:00,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:00,266 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 800 transitions. [2020-10-15 04:45:00,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 800 transitions. [2020-10-15 04:45:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 04:45:00,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:00,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:00,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:45:00,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:00,270 INFO L82 PathProgramCache]: Analyzing trace with hash 556124719, now seen corresponding path program 1 times [2020-10-15 04:45:00,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:00,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011858653] [2020-10-15 04:45:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:00,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 04:45:00,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-15 04:45:00,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:00,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 04:45:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:45:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 04:45:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:00,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:00,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:00,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:00,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:00,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:00,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:00,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:00,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-15 04:45:00,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011858653] [2020-10-15 04:45:00,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:00,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:00,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886418225] [2020-10-15 04:45:00,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:00,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:00,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:00,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:00,945 INFO L87 Difference]: Start difference. First operand 543 states and 800 transitions. Second operand 3 states. [2020-10-15 04:45:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:01,076 INFO L93 Difference]: Finished difference Result 1073 states and 1604 transitions. [2020-10-15 04:45:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:01,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-10-15 04:45:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:01,082 INFO L225 Difference]: With dead ends: 1073 [2020-10-15 04:45:01,082 INFO L226 Difference]: Without dead ends: 719 [2020-10-15 04:45:01,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-10-15 04:45:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2020-10-15 04:45:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-15 04:45:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1056 transitions. [2020-10-15 04:45:01,108 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1056 transitions. Word has length 109 [2020-10-15 04:45:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:01,109 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 1056 transitions. [2020-10-15 04:45:01,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1056 transitions. [2020-10-15 04:45:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-15 04:45:01,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:01,112 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:01,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:45:01,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:01,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:01,113 INFO L82 PathProgramCache]: Analyzing trace with hash 161436948, now seen corresponding path program 1 times [2020-10-15 04:45:01,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:01,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708809200] [2020-10-15 04:45:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:01,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-15 04:45:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-15 04:45:01,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:01,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-15 04:45:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:45:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:01,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:01,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:01,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:01,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-15 04:45:01,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708809200] [2020-10-15 04:45:01,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:01,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:01,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702052186] [2020-10-15 04:45:01,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:01,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:01,641 INFO L87 Difference]: Start difference. First operand 719 states and 1056 transitions. Second operand 3 states. [2020-10-15 04:45:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:01,871 INFO L93 Difference]: Finished difference Result 1641 states and 2484 transitions. [2020-10-15 04:45:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:01,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-10-15 04:45:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:01,877 INFO L225 Difference]: With dead ends: 1641 [2020-10-15 04:45:01,878 INFO L226 Difference]: Without dead ends: 887 [2020-10-15 04:45:01,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-10-15 04:45:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 831. [2020-10-15 04:45:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-15 04:45:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1248 transitions. [2020-10-15 04:45:01,908 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1248 transitions. Word has length 136 [2020-10-15 04:45:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:01,908 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1248 transitions. [2020-10-15 04:45:01,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1248 transitions. [2020-10-15 04:45:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-15 04:45:01,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:01,912 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:01,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:45:01,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:01,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:01,913 INFO L82 PathProgramCache]: Analyzing trace with hash 597517960, now seen corresponding path program 1 times [2020-10-15 04:45:01,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:01,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398443975] [2020-10-15 04:45:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:45:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-15 04:45:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:02,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-15 04:45:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 04:45:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:02,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:02,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:02,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:02,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:02,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:02,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:02,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:02,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:02,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-15 04:45:02,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398443975] [2020-10-15 04:45:02,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:02,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:02,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976496997] [2020-10-15 04:45:02,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:02,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:02,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:02,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:02,595 INFO L87 Difference]: Start difference. First operand 831 states and 1248 transitions. Second operand 3 states. [2020-10-15 04:45:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:02,732 INFO L93 Difference]: Finished difference Result 1649 states and 2500 transitions. [2020-10-15 04:45:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:02,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-10-15 04:45:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:02,740 INFO L225 Difference]: With dead ends: 1649 [2020-10-15 04:45:02,741 INFO L226 Difference]: Without dead ends: 1035 [2020-10-15 04:45:02,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-15 04:45:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1035. [2020-10-15 04:45:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-15 04:45:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1553 transitions. [2020-10-15 04:45:02,777 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1553 transitions. Word has length 157 [2020-10-15 04:45:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:02,777 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1553 transitions. [2020-10-15 04:45:02,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1553 transitions. [2020-10-15 04:45:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 04:45:02,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:02,782 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:02,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:45:02,782 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:02,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:02,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2063890137, now seen corresponding path program 1 times [2020-10-15 04:45:02,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:02,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126868529] [2020-10-15 04:45:02,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 04:45:03,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-15 04:45:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-15 04:45:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:45:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:03,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:03,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-15 04:45:03,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126868529] [2020-10-15 04:45:03,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:03,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:03,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559474204] [2020-10-15 04:45:03,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:03,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:03,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:03,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:03,579 INFO L87 Difference]: Start difference. First operand 1035 states and 1553 transitions. Second operand 3 states. [2020-10-15 04:45:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:03,718 INFO L93 Difference]: Finished difference Result 2057 states and 3110 transitions. [2020-10-15 04:45:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:03,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-10-15 04:45:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:03,727 INFO L225 Difference]: With dead ends: 2057 [2020-10-15 04:45:03,728 INFO L226 Difference]: Without dead ends: 1239 [2020-10-15 04:45:03,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-15 04:45:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2020-10-15 04:45:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-15 04:45:03,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1859 transitions. [2020-10-15 04:45:03,771 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1859 transitions. Word has length 186 [2020-10-15 04:45:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:03,772 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1859 transitions. [2020-10-15 04:45:03,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1859 transitions. [2020-10-15 04:45:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-15 04:45:03,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:03,778 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:03,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:45:03,778 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1968978246, now seen corresponding path program 1 times [2020-10-15 04:45:03,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:03,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641772143] [2020-10-15 04:45:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:45:05,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:45:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-15 04:45:05,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:05,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-15 04:45:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 04:45:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:05,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-15 04:45:05,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641772143] [2020-10-15 04:45:05,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:05,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:05,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357980885] [2020-10-15 04:45:05,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:05,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:05,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:05,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:05,549 INFO L87 Difference]: Start difference. First operand 1239 states and 1859 transitions. Second operand 3 states. [2020-10-15 04:45:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:05,717 INFO L93 Difference]: Finished difference Result 2465 states and 3722 transitions. [2020-10-15 04:45:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:05,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-10-15 04:45:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:05,729 INFO L225 Difference]: With dead ends: 2465 [2020-10-15 04:45:05,730 INFO L226 Difference]: Without dead ends: 1443 [2020-10-15 04:45:05,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-10-15 04:45:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2020-10-15 04:45:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-15 04:45:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2166 transitions. [2020-10-15 04:45:05,800 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2166 transitions. Word has length 219 [2020-10-15 04:45:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:05,801 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2166 transitions. [2020-10-15 04:45:05,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2166 transitions. [2020-10-15 04:45:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-15 04:45:05,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:05,812 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:05,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:45:05,812 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1720831752, now seen corresponding path program 1 times [2020-10-15 04:45:05,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:05,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271420380] [2020-10-15 04:45:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:05,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:07,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:45:07,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-10-15 04:45:07,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:07,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-15 04:45:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:45:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:07,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:07,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:07,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-15 04:45:07,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271420380] [2020-10-15 04:45:07,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:07,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:07,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149464948] [2020-10-15 04:45:07,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:07,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:07,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:07,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:07,479 INFO L87 Difference]: Start difference. First operand 1443 states and 2166 transitions. Second operand 3 states. [2020-10-15 04:45:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:07,635 INFO L93 Difference]: Finished difference Result 2873 states and 4336 transitions. [2020-10-15 04:45:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:07,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-10-15 04:45:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:07,645 INFO L225 Difference]: With dead ends: 2873 [2020-10-15 04:45:07,645 INFO L226 Difference]: Without dead ends: 1647 [2020-10-15 04:45:07,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-10-15 04:45:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1647. [2020-10-15 04:45:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1647 states. [2020-10-15 04:45:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2474 transitions. [2020-10-15 04:45:07,702 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2474 transitions. Word has length 219 [2020-10-15 04:45:07,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:07,703 INFO L479 AbstractCegarLoop]: Abstraction has 1647 states and 2474 transitions. [2020-10-15 04:45:07,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2474 transitions. [2020-10-15 04:45:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 04:45:07,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:07,712 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 5, 5, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:07,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:45:07,713 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:07,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:07,713 INFO L82 PathProgramCache]: Analyzing trace with hash -543459408, now seen corresponding path program 1 times [2020-10-15 04:45:07,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:07,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745947339] [2020-10-15 04:45:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:09,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 04:45:09,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-15 04:45:09,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:09,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-15 04:45:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:45:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:09,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:09,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:09,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:09,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:09,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2020-10-15 04:45:09,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745947339] [2020-10-15 04:45:09,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:09,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:09,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648773152] [2020-10-15 04:45:09,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:09,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:09,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:09,209 INFO L87 Difference]: Start difference. First operand 1647 states and 2474 transitions. Second operand 3 states. [2020-10-15 04:45:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:09,372 INFO L93 Difference]: Finished difference Result 3281 states and 4952 transitions. [2020-10-15 04:45:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:09,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-10-15 04:45:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:09,383 INFO L225 Difference]: With dead ends: 3281 [2020-10-15 04:45:09,383 INFO L226 Difference]: Without dead ends: 1851 [2020-10-15 04:45:09,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-10-15 04:45:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1851. [2020-10-15 04:45:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2020-10-15 04:45:09,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2783 transitions. [2020-10-15 04:45:09,449 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2783 transitions. Word has length 251 [2020-10-15 04:45:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:09,450 INFO L479 AbstractCegarLoop]: Abstraction has 1851 states and 2783 transitions. [2020-10-15 04:45:09,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2783 transitions. [2020-10-15 04:45:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-15 04:45:09,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:09,458 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:09,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:45:09,459 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1338151680, now seen corresponding path program 1 times [2020-10-15 04:45:09,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:09,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029138256] [2020-10-15 04:45:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:10,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-15 04:45:10,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:45:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-15 04:45:10,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:10,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-15 04:45:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:45:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:10,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:10,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:10,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:10,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:10,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-10-15 04:45:10,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029138256] [2020-10-15 04:45:10,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:10,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:10,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650591454] [2020-10-15 04:45:10,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:10,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:10,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:10,561 INFO L87 Difference]: Start difference. First operand 1851 states and 2783 transitions. Second operand 3 states. [2020-10-15 04:45:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:10,730 INFO L93 Difference]: Finished difference Result 3689 states and 5570 transitions. [2020-10-15 04:45:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:10,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 285 [2020-10-15 04:45:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:10,743 INFO L225 Difference]: With dead ends: 3689 [2020-10-15 04:45:10,743 INFO L226 Difference]: Without dead ends: 2055 [2020-10-15 04:45:10,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2020-10-15 04:45:10,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2055. [2020-10-15 04:45:10,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-10-15 04:45:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3093 transitions. [2020-10-15 04:45:10,813 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3093 transitions. Word has length 285 [2020-10-15 04:45:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:10,814 INFO L479 AbstractCegarLoop]: Abstraction has 2055 states and 3093 transitions. [2020-10-15 04:45:10,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3093 transitions. [2020-10-15 04:45:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-15 04:45:10,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:10,823 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:10,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:45:10,824 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash 285585038, now seen corresponding path program 1 times [2020-10-15 04:45:10,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:10,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797866671] [2020-10-15 04:45:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-15 04:45:12,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:45:12,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-15 04:45:12,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:12,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:45:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-15 04:45:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:12,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:12,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-15 04:45:12,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797866671] [2020-10-15 04:45:12,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:12,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:12,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640787512] [2020-10-15 04:45:12,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:12,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:12,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:12,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:12,460 INFO L87 Difference]: Start difference. First operand 2055 states and 3093 transitions. Second operand 3 states. [2020-10-15 04:45:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:12,604 INFO L93 Difference]: Finished difference Result 6099 states and 9205 transitions. [2020-10-15 04:45:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:12,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 323 [2020-10-15 04:45:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:12,636 INFO L225 Difference]: With dead ends: 6099 [2020-10-15 04:45:12,637 INFO L226 Difference]: Without dead ends: 4057 [2020-10-15 04:45:12,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:12,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2020-10-15 04:45:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 4055. [2020-10-15 04:45:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4055 states. [2020-10-15 04:45:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 6098 transitions. [2020-10-15 04:45:12,840 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 6098 transitions. Word has length 323 [2020-10-15 04:45:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:12,841 INFO L479 AbstractCegarLoop]: Abstraction has 4055 states and 6098 transitions. [2020-10-15 04:45:12,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 6098 transitions. [2020-10-15 04:45:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:45:12,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:12,868 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:12,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:45:12,869 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1539832039, now seen corresponding path program 1 times [2020-10-15 04:45:12,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:12,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882773203] [2020-10-15 04:45:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-15 04:45:13,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:45:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-15 04:45:13,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:13,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-15 04:45:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:45:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:13,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:13,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:13,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:13,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:13,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:13,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:13,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:45:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2020-10-15 04:45:13,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882773203] [2020-10-15 04:45:13,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:13,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:13,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983722041] [2020-10-15 04:45:13,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:13,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:13,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:13,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:13,736 INFO L87 Difference]: Start difference. First operand 4055 states and 6098 transitions. Second operand 3 states. [2020-10-15 04:45:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:14,060 INFO L93 Difference]: Finished difference Result 8097 states and 12221 transitions. [2020-10-15 04:45:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:14,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-10-15 04:45:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:14,093 INFO L225 Difference]: With dead ends: 8097 [2020-10-15 04:45:14,093 INFO L226 Difference]: Without dead ends: 4459 [2020-10-15 04:45:14,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2020-10-15 04:45:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4459. [2020-10-15 04:45:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4459 states. [2020-10-15 04:45:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6713 transitions. [2020-10-15 04:45:14,256 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6713 transitions. Word has length 330 [2020-10-15 04:45:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:14,257 INFO L479 AbstractCegarLoop]: Abstraction has 4459 states and 6713 transitions. [2020-10-15 04:45:14,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6713 transitions. [2020-10-15 04:45:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-15 04:45:14,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:14,276 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:14,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:45:14,277 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:14,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1677274654, now seen corresponding path program 1 times [2020-10-15 04:45:14,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:14,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796878790] [2020-10-15 04:45:14,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:14,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:14,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-15 04:45:14,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:45:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-15 04:45:14,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:14,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-15 04:45:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:45:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:14,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:45:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2020-10-15 04:45:14,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796878790] [2020-10-15 04:45:14,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:14,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:14,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116149939] [2020-10-15 04:45:14,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:14,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:14,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:14,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:14,884 INFO L87 Difference]: Start difference. First operand 4459 states and 6713 transitions. Second operand 3 states. [2020-10-15 04:45:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:15,209 INFO L93 Difference]: Finished difference Result 9873 states and 15213 transitions. [2020-10-15 04:45:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:15,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 370 [2020-10-15 04:45:15,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:15,261 INFO L225 Difference]: With dead ends: 9873 [2020-10-15 04:45:15,261 INFO L226 Difference]: Without dead ends: 5427 [2020-10-15 04:45:15,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2020-10-15 04:45:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5361. [2020-10-15 04:45:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5361 states. [2020-10-15 04:45:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 7791 transitions. [2020-10-15 04:45:15,486 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 7791 transitions. Word has length 370 [2020-10-15 04:45:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:15,486 INFO L479 AbstractCegarLoop]: Abstraction has 5361 states and 7791 transitions. [2020-10-15 04:45:15,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 7791 transitions. [2020-10-15 04:45:15,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-15 04:45:15,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:15,518 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:15,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:45:15,518 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:15,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1526354661, now seen corresponding path program 1 times [2020-10-15 04:45:15,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:15,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353026706] [2020-10-15 04:45:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:18,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-15 04:45:18,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:45:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3380 [2020-10-15 04:45:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:18,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:45:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-15 04:45:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:19,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:19,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:19,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:19,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:19,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:19,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1613 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2020-10-15 04:45:19,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353026706] [2020-10-15 04:45:19,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:19,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:19,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54350025] [2020-10-15 04:45:19,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:19,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:19,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:19,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:19,344 INFO L87 Difference]: Start difference. First operand 5361 states and 7791 transitions. Second operand 3 states. [2020-10-15 04:45:19,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:19,506 INFO L93 Difference]: Finished difference Result 10200 states and 14815 transitions. [2020-10-15 04:45:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:19,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 404 [2020-10-15 04:45:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:19,528 INFO L225 Difference]: With dead ends: 10200 [2020-10-15 04:45:19,528 INFO L226 Difference]: Without dead ends: 7525 [2020-10-15 04:45:19,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7525 states. [2020-10-15 04:45:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7525 to 7523. [2020-10-15 04:45:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7523 states. [2020-10-15 04:45:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 10910 transitions. [2020-10-15 04:45:19,817 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 10910 transitions. Word has length 404 [2020-10-15 04:45:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:19,818 INFO L479 AbstractCegarLoop]: Abstraction has 7523 states and 10910 transitions. [2020-10-15 04:45:19,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 10910 transitions. [2020-10-15 04:45:19,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-15 04:45:19,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:19,848 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:19,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:45:19,848 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash 452057042, now seen corresponding path program 1 times [2020-10-15 04:45:19,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:19,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009999882] [2020-10-15 04:45:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-15 04:45:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:45:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:45:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:24,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-15 04:45:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-15 04:45:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:25,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:25,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:25,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:25,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:25,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1692 backedges. 739 proven. 192 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2020-10-15 04:45:25,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009999882] [2020-10-15 04:45:25,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:25,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:45:25,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282624466] [2020-10-15 04:45:25,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:25,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:25,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:25,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:25,407 INFO L87 Difference]: Start difference. First operand 7523 states and 10910 transitions. Second operand 4 states. [2020-10-15 04:45:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:26,307 INFO L93 Difference]: Finished difference Result 23885 states and 35038 transitions. [2020-10-15 04:45:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:26,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 411 [2020-10-15 04:45:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:26,348 INFO L225 Difference]: With dead ends: 23885 [2020-10-15 04:45:26,348 INFO L226 Difference]: Without dead ends: 16375 [2020-10-15 04:45:26,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16375 states. [2020-10-15 04:45:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16375 to 14637. [2020-10-15 04:45:26,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14637 states. [2020-10-15 04:45:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14637 states to 14637 states and 21493 transitions. [2020-10-15 04:45:26,956 INFO L78 Accepts]: Start accepts. Automaton has 14637 states and 21493 transitions. Word has length 411 [2020-10-15 04:45:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:26,957 INFO L479 AbstractCegarLoop]: Abstraction has 14637 states and 21493 transitions. [2020-10-15 04:45:26,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14637 states and 21493 transitions. [2020-10-15 04:45:27,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-15 04:45:27,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:27,004 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:27,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:45:27,004 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:27,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1901423754, now seen corresponding path program 1 times [2020-10-15 04:45:27,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:27,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529299289] [2020-10-15 04:45:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:32,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:32,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-15 04:45:32,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:45:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 04:45:32,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:32,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-15 04:45:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:45:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:32,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:32,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:32,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 1021 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2020-10-15 04:45:32,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529299289] [2020-10-15 04:45:32,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:32,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:32,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128255949] [2020-10-15 04:45:32,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:32,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:32,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:32,347 INFO L87 Difference]: Start difference. First operand 14637 states and 21493 transitions. Second operand 3 states. [2020-10-15 04:45:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:32,927 INFO L93 Difference]: Finished difference Result 26973 states and 40339 transitions. [2020-10-15 04:45:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:32,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 418 [2020-10-15 04:45:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:32,978 INFO L225 Difference]: With dead ends: 26973 [2020-10-15 04:45:32,978 INFO L226 Difference]: Without dead ends: 16565 [2020-10-15 04:45:33,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16565 states. [2020-10-15 04:45:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16565 to 16353. [2020-10-15 04:45:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16353 states. [2020-10-15 04:45:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16353 states to 16353 states and 23561 transitions. [2020-10-15 04:45:33,525 INFO L78 Accepts]: Start accepts. Automaton has 16353 states and 23561 transitions. Word has length 418 [2020-10-15 04:45:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:33,526 INFO L479 AbstractCegarLoop]: Abstraction has 16353 states and 23561 transitions. [2020-10-15 04:45:33,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16353 states and 23561 transitions. [2020-10-15 04:45:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-15 04:45:33,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:33,583 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:33,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:45:33,583 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:33,584 INFO L82 PathProgramCache]: Analyzing trace with hash -682670232, now seen corresponding path program 1 times [2020-10-15 04:45:33,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:33,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785652577] [2020-10-15 04:45:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-15 04:45:38,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:45:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:45:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:38,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-15 04:45:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-15 04:45:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:38,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:38,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:38,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:38,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:38,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 927 proven. 89 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2020-10-15 04:45:39,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785652577] [2020-10-15 04:45:39,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:39,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:45:39,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343791236] [2020-10-15 04:45:39,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:39,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:39,049 INFO L87 Difference]: Start difference. First operand 16353 states and 23561 transitions. Second operand 4 states. [2020-10-15 04:45:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:39,730 INFO L93 Difference]: Finished difference Result 37621 states and 53812 transitions. [2020-10-15 04:45:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:39,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2020-10-15 04:45:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:39,777 INFO L225 Difference]: With dead ends: 37621 [2020-10-15 04:45:39,777 INFO L226 Difference]: Without dead ends: 21281 [2020-10-15 04:45:39,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21281 states. [2020-10-15 04:45:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21281 to 20348. [2020-10-15 04:45:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20348 states. [2020-10-15 04:45:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20348 states to 20348 states and 29050 transitions. [2020-10-15 04:45:40,315 INFO L78 Accepts]: Start accepts. Automaton has 20348 states and 29050 transitions. Word has length 423 [2020-10-15 04:45:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:40,315 INFO L479 AbstractCegarLoop]: Abstraction has 20348 states and 29050 transitions. [2020-10-15 04:45:40,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 20348 states and 29050 transitions. [2020-10-15 04:45:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-15 04:45:40,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:40,357 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:40,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:45:40,357 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:40,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1014979983, now seen corresponding path program 1 times [2020-10-15 04:45:40,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:40,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033962908] [2020-10-15 04:45:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:44,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-15 04:45:44,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4510 [2020-10-15 04:45:44,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:44,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:45:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-15 04:45:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:45,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:45,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:45,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:45,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:45,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:45,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 1024 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2020-10-15 04:45:45,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033962908] [2020-10-15 04:45:45,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:45,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:45,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752006019] [2020-10-15 04:45:45,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:45,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:45,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:45,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:45,361 INFO L87 Difference]: Start difference. First operand 20348 states and 29050 transitions. Second operand 3 states. [2020-10-15 04:45:45,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:45,822 INFO L93 Difference]: Finished difference Result 48647 states and 69369 transitions. [2020-10-15 04:45:45,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:45,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 427 [2020-10-15 04:45:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:45,876 INFO L225 Difference]: With dead ends: 48647 [2020-10-15 04:45:45,876 INFO L226 Difference]: Without dead ends: 28312 [2020-10-15 04:45:45,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28312 states. [2020-10-15 04:45:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28312 to 28312. [2020-10-15 04:45:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28312 states. [2020-10-15 04:45:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28312 states to 28312 states and 40268 transitions. [2020-10-15 04:45:46,623 INFO L78 Accepts]: Start accepts. Automaton has 28312 states and 40268 transitions. Word has length 427 [2020-10-15 04:45:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:46,624 INFO L479 AbstractCegarLoop]: Abstraction has 28312 states and 40268 transitions. [2020-10-15 04:45:46,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 28312 states and 40268 transitions. [2020-10-15 04:45:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-15 04:45:46,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:46,667 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:46,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:45:46,668 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:46,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:46,668 INFO L82 PathProgramCache]: Analyzing trace with hash 306349835, now seen corresponding path program 1 times [2020-10-15 04:45:46,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:46,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062525873] [2020-10-15 04:45:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:46,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:51,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:51,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-15 04:45:51,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4928 [2020-10-15 04:45:51,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:51,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-15 04:45:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-15 04:45:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:51,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:51,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:51,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:51,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:51,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1877 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2020-10-15 04:45:51,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062525873] [2020-10-15 04:45:51,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:51,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:51,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93498772] [2020-10-15 04:45:51,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:51,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:51,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:51,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:51,872 INFO L87 Difference]: Start difference. First operand 28312 states and 40268 transitions. Second operand 3 states. [2020-10-15 04:45:52,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:52,440 INFO L93 Difference]: Finished difference Result 68914 states and 98062 transitions. [2020-10-15 04:45:52,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:52,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 429 [2020-10-15 04:45:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:52,522 INFO L225 Difference]: With dead ends: 68914 [2020-10-15 04:45:52,523 INFO L226 Difference]: Without dead ends: 48579 [2020-10-15 04:45:52,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48579 states. [2020-10-15 04:45:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48579 to 48577. [2020-10-15 04:45:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48577 states. [2020-10-15 04:45:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48577 states to 48577 states and 69028 transitions. [2020-10-15 04:45:53,872 INFO L78 Accepts]: Start accepts. Automaton has 48577 states and 69028 transitions. Word has length 429 [2020-10-15 04:45:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:53,873 INFO L479 AbstractCegarLoop]: Abstraction has 48577 states and 69028 transitions. [2020-10-15 04:45:53,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 48577 states and 69028 transitions. [2020-10-15 04:45:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-15 04:45:53,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:53,937 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:53,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:45:53,938 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash 790414041, now seen corresponding path program 1 times [2020-10-15 04:45:53,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:53,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902277268] [2020-10-15 04:45:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:56,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:56,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-15 04:45:56,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:56,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2130 [2020-10-15 04:45:56,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:56,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-15 04:45:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-15 04:45:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:56,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:56,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:56,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:56,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:56,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 1026 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2020-10-15 04:45:56,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902277268] [2020-10-15 04:45:56,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:56,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:56,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048167941] [2020-10-15 04:45:56,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:56,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:56,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:56,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:56,568 INFO L87 Difference]: Start difference. First operand 48577 states and 69028 transitions. Second operand 3 states. [2020-10-15 04:45:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:57,410 INFO L93 Difference]: Finished difference Result 113008 states and 160290 transitions. [2020-10-15 04:45:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:57,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 430 [2020-10-15 04:45:57,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:57,538 INFO L225 Difference]: With dead ends: 113008 [2020-10-15 04:45:57,539 INFO L226 Difference]: Without dead ends: 72408 [2020-10-15 04:45:57,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72408 states. [2020-10-15 04:46:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72408 to 72031. [2020-10-15 04:46:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72031 states. [2020-10-15 04:46:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72031 states to 72031 states and 101890 transitions. [2020-10-15 04:46:00,836 INFO L78 Accepts]: Start accepts. Automaton has 72031 states and 101890 transitions. Word has length 430 [2020-10-15 04:46:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:00,837 INFO L479 AbstractCegarLoop]: Abstraction has 72031 states and 101890 transitions. [2020-10-15 04:46:00,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 72031 states and 101890 transitions. [2020-10-15 04:46:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-15 04:46:00,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:00,912 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:00,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:46:00,913 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:00,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1787603663, now seen corresponding path program 1 times [2020-10-15 04:46:00,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:00,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080544713] [2020-10-15 04:46:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:05,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:05,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-15 04:46:05,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:46:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:46:05,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:05,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-15 04:46:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-15 04:46:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:06,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:06,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:06,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:06,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:46:06,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:06,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:46:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 1026 proven. 1 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2020-10-15 04:46:06,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080544713] [2020-10-15 04:46:06,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:06,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:46:06,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361180751] [2020-10-15 04:46:06,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:06,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:06,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:06,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:06,801 INFO L87 Difference]: Start difference. First operand 72031 states and 101890 transitions. Second operand 5 states. [2020-10-15 04:46:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:09,633 INFO L93 Difference]: Finished difference Result 181001 states and 255685 transitions. [2020-10-15 04:46:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:46:09,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2020-10-15 04:46:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:09,841 INFO L225 Difference]: With dead ends: 181001 [2020-10-15 04:46:09,842 INFO L226 Difference]: Without dead ends: 125747 [2020-10-15 04:46:09,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:46:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125747 states. [2020-10-15 04:46:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125747 to 107736. [2020-10-15 04:46:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107736 states. [2020-10-15 04:46:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107736 states to 107736 states and 152222 transitions. [2020-10-15 04:46:12,988 INFO L78 Accepts]: Start accepts. Automaton has 107736 states and 152222 transitions. Word has length 431 [2020-10-15 04:46:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:12,989 INFO L479 AbstractCegarLoop]: Abstraction has 107736 states and 152222 transitions. [2020-10-15 04:46:12,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 107736 states and 152222 transitions. [2020-10-15 04:46:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-15 04:46:13,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:13,135 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:13,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:46:13,136 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:13,136 INFO L82 PathProgramCache]: Analyzing trace with hash 809293511, now seen corresponding path program 1 times [2020-10-15 04:46:13,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:13,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890462677] [2020-10-15 04:46:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:13,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:18,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-15 04:46:18,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:46:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:46:18,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:18,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-15 04:46:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-15 04:46:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:18,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:18,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:46:18,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:18,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:18,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1880 backedges. 1028 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2020-10-15 04:46:18,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890462677] [2020-10-15 04:46:18,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:18,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:18,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482926811] [2020-10-15 04:46:18,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:18,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:18,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:18,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:18,710 INFO L87 Difference]: Start difference. First operand 107736 states and 152222 transitions. Second operand 3 states. [2020-10-15 04:46:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:20,934 INFO L93 Difference]: Finished difference Result 184991 states and 261299 transitions. [2020-10-15 04:46:20,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:20,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 432 [2020-10-15 04:46:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:21,114 INFO L225 Difference]: With dead ends: 184991 [2020-10-15 04:46:21,115 INFO L226 Difference]: Without dead ends: 146887 [2020-10-15 04:46:21,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146887 states. [2020-10-15 04:46:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146887 to 111003. [2020-10-15 04:46:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111003 states. [2020-10-15 04:46:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111003 states to 111003 states and 156788 transitions. [2020-10-15 04:46:23,178 INFO L78 Accepts]: Start accepts. Automaton has 111003 states and 156788 transitions. Word has length 432 [2020-10-15 04:46:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:23,179 INFO L479 AbstractCegarLoop]: Abstraction has 111003 states and 156788 transitions. [2020-10-15 04:46:23,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 111003 states and 156788 transitions. [2020-10-15 04:46:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-15 04:46:23,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:23,279 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:23,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:46:23,279 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:23,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1424241546, now seen corresponding path program 1 times [2020-10-15 04:46:23,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:23,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027881481] [2020-10-15 04:46:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:23,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:26,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-15 04:46:26,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:46:26,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3010 [2020-10-15 04:46:26,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:26,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-15 04:46:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 04:46:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:26,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:26,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:46:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:26,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2020-10-15 04:46:26,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027881481] [2020-10-15 04:46:26,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:26,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:26,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710904557] [2020-10-15 04:46:26,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:26,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:26,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:26,645 INFO L87 Difference]: Start difference. First operand 111003 states and 156788 transitions. Second operand 3 states. [2020-10-15 04:46:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:28,666 INFO L93 Difference]: Finished difference Result 169821 states and 240245 transitions. [2020-10-15 04:46:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:28,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 440 [2020-10-15 04:46:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:28,797 INFO L225 Difference]: With dead ends: 169821 [2020-10-15 04:46:28,797 INFO L226 Difference]: Without dead ends: 115979 [2020-10-15 04:46:28,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115979 states. [2020-10-15 04:46:30,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115979 to 115979. [2020-10-15 04:46:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115979 states. [2020-10-15 04:46:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115979 states to 115979 states and 163780 transitions. [2020-10-15 04:46:30,936 INFO L78 Accepts]: Start accepts. Automaton has 115979 states and 163780 transitions. Word has length 440 [2020-10-15 04:46:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:30,936 INFO L479 AbstractCegarLoop]: Abstraction has 115979 states and 163780 transitions. [2020-10-15 04:46:30,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 115979 states and 163780 transitions. [2020-10-15 04:46:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-15 04:46:31,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:31,042 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:31,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:46:31,042 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:31,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1367558780, now seen corresponding path program 1 times [2020-10-15 04:46:31,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:31,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115997262] [2020-10-15 04:46:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:31,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-15 04:46:31,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:46:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-15 04:46:31,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:31,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 377 [2020-10-15 04:46:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 04:46:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:31,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:31,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:46:31,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:31,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:46:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2020-10-15 04:46:32,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115997262] [2020-10-15 04:46:32,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:32,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:32,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644988227] [2020-10-15 04:46:32,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:32,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:32,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:32,143 INFO L87 Difference]: Start difference. First operand 115979 states and 163780 transitions. Second operand 3 states. [2020-10-15 04:46:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:34,358 INFO L93 Difference]: Finished difference Result 180181 states and 254749 transitions. [2020-10-15 04:46:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:34,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 441 [2020-10-15 04:46:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:34,496 INFO L225 Difference]: With dead ends: 180181 [2020-10-15 04:46:34,496 INFO L226 Difference]: Without dead ends: 121363 [2020-10-15 04:46:34,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121363 states. [2020-10-15 04:46:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121363 to 121363. [2020-10-15 04:46:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121363 states. [2020-10-15 04:46:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121363 states to 121363 states and 171508 transitions. [2020-10-15 04:46:39,404 INFO L78 Accepts]: Start accepts. Automaton has 121363 states and 171508 transitions. Word has length 441 [2020-10-15 04:46:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:39,404 INFO L479 AbstractCegarLoop]: Abstraction has 121363 states and 171508 transitions. [2020-10-15 04:46:39,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 121363 states and 171508 transitions. [2020-10-15 04:46:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-15 04:46:39,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:39,508 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 8, 7, 7, 6, 6, 5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:39,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:46:39,508 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash 747551279, now seen corresponding path program 1 times [2020-10-15 04:46:39,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:39,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619206803] [2020-10-15 04:46:39,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:39,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:41,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:44,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-15 04:46:44,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:46:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:46:44,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:44,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 379 [2020-10-15 04:46:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-15 04:46:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:44,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:44,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:44,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1209 proven. 90 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2020-10-15 04:46:44,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619206803] [2020-10-15 04:46:44,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:44,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:46:44,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910662706] [2020-10-15 04:46:44,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:44,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:44,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:44,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:44,755 INFO L87 Difference]: Start difference. First operand 121363 states and 171508 transitions. Second operand 4 states. [2020-10-15 04:46:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:46,924 INFO L93 Difference]: Finished difference Result 250413 states and 355471 transitions. [2020-10-15 04:46:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:46,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 522 [2020-10-15 04:46:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:47,001 INFO L225 Difference]: With dead ends: 250413 [2020-10-15 04:46:47,001 INFO L226 Difference]: Without dead ends: 65575 [2020-10-15 04:46:47,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65575 states. [2020-10-15 04:46:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65575 to 35127. [2020-10-15 04:46:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35127 states. [2020-10-15 04:46:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35127 states to 35127 states and 49474 transitions. [2020-10-15 04:46:47,779 INFO L78 Accepts]: Start accepts. Automaton has 35127 states and 49474 transitions. Word has length 522 [2020-10-15 04:46:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:47,780 INFO L479 AbstractCegarLoop]: Abstraction has 35127 states and 49474 transitions. [2020-10-15 04:46:47,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 35127 states and 49474 transitions. [2020-10-15 04:46:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-15 04:46:47,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:47,813 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 9, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:47,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:46:47,813 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:47,813 INFO L82 PathProgramCache]: Analyzing trace with hash 837646565, now seen corresponding path program 1 times [2020-10-15 04:46:47,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:47,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806252230] [2020-10-15 04:46:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:52,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:52,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-15 04:46:52,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:46:52,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:46:52,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:52,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:52,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:52,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 335 [2020-10-15 04:46:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 04:46:52,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:54,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3220 backedges. 1942 proven. 0 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-10-15 04:46:54,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806252230] [2020-10-15 04:46:54,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:54,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:54,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34966251] [2020-10-15 04:46:54,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:54,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:54,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:54,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:54,481 INFO L87 Difference]: Start difference. First operand 35127 states and 49474 transitions. Second operand 3 states. [2020-10-15 04:46:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:55,063 INFO L93 Difference]: Finished difference Result 55593 states and 78259 transitions. [2020-10-15 04:46:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:55,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 558 [2020-10-15 04:46:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:55,099 INFO L225 Difference]: With dead ends: 55593 [2020-10-15 04:46:55,099 INFO L226 Difference]: Without dead ends: 36715 [2020-10-15 04:46:55,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36715 states. [2020-10-15 04:46:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36715 to 36715. [2020-10-15 04:46:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36715 states. [2020-10-15 04:46:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36715 states to 36715 states and 51718 transitions. [2020-10-15 04:46:55,692 INFO L78 Accepts]: Start accepts. Automaton has 36715 states and 51718 transitions. Word has length 558 [2020-10-15 04:46:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:55,692 INFO L479 AbstractCegarLoop]: Abstraction has 36715 states and 51718 transitions. [2020-10-15 04:46:55,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 36715 states and 51718 transitions. [2020-10-15 04:46:55,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2020-10-15 04:46:55,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:55,723 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 20, 20, 19, 19, 18, 18, 16, 16, 16, 16, 12, 8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:55,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:46:55,723 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2024939323, now seen corresponding path program 1 times [2020-10-15 04:46:55,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:55,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009717654] [2020-10-15 04:46:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:55,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 758 [2020-10-15 04:47:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:47:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 04:47:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:00,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 526 [2020-10-15 04:47:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 04:47:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:00,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:00,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:00,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5966 backedges. 2918 proven. 0 refuted. 0 times theorem prover too weak. 3048 trivial. 0 not checked. [2020-10-15 04:47:01,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009717654] [2020-10-15 04:47:01,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:01,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:01,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723132475] [2020-10-15 04:47:01,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:01,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:01,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:01,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:01,094 INFO L87 Difference]: Start difference. First operand 36715 states and 51718 transitions. Second operand 3 states. [2020-10-15 04:47:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:01,640 INFO L93 Difference]: Finished difference Result 58769 states and 82747 transitions. [2020-10-15 04:47:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:01,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 750 [2020-10-15 04:47:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:01,677 INFO L225 Difference]: With dead ends: 58769 [2020-10-15 04:47:01,677 INFO L226 Difference]: Without dead ends: 38303 [2020-10-15 04:47:01,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:01,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38303 states. [2020-10-15 04:47:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38303 to 38303. [2020-10-15 04:47:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38303 states. [2020-10-15 04:47:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38303 states to 38303 states and 53970 transitions. [2020-10-15 04:47:02,555 INFO L78 Accepts]: Start accepts. Automaton has 38303 states and 53970 transitions. Word has length 750 [2020-10-15 04:47:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:02,555 INFO L479 AbstractCegarLoop]: Abstraction has 38303 states and 53970 transitions. [2020-10-15 04:47:02,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 38303 states and 53970 transitions. [2020-10-15 04:47:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-15 04:47:02,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:02,591 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 21, 21, 20, 20, 19, 19, 17, 17, 17, 17, 13, 9, 9, 8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:02,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:47:02,592 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:02,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2117833549, now seen corresponding path program 1 times [2020-10-15 04:47:02,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:02,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699439400] [2020-10-15 04:47:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:07,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 799 [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 568 [2020-10-15 04:47:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 04:47:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:07,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:07,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:07,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:07,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 3099 proven. 0 refuted. 0 times theorem prover too weak. 3481 trivial. 0 not checked. [2020-10-15 04:47:07,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699439400] [2020-10-15 04:47:07,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:07,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:07,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523982784] [2020-10-15 04:47:07,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:07,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:07,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:07,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:07,988 INFO L87 Difference]: Start difference. First operand 38303 states and 53970 transitions. Second operand 3 states. [2020-10-15 04:47:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:08,659 INFO L93 Difference]: Finished difference Result 61945 states and 87251 transitions. [2020-10-15 04:47:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:08,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 791 [2020-10-15 04:47:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:08,696 INFO L225 Difference]: With dead ends: 61945 [2020-10-15 04:47:08,696 INFO L226 Difference]: Without dead ends: 39891 [2020-10-15 04:47:08,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39891 states. [2020-10-15 04:47:09,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39891 to 39891. [2020-10-15 04:47:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39891 states. [2020-10-15 04:47:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39891 states to 39891 states and 56226 transitions. [2020-10-15 04:47:09,381 INFO L78 Accepts]: Start accepts. Automaton has 39891 states and 56226 transitions. Word has length 791 [2020-10-15 04:47:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:09,382 INFO L479 AbstractCegarLoop]: Abstraction has 39891 states and 56226 transitions. [2020-10-15 04:47:09,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 39891 states and 56226 transitions. [2020-10-15 04:47:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-15 04:47:09,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:09,418 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 23, 23, 22, 22, 21, 21, 18, 18, 18, 18, 14, 10, 10, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:09,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:47:09,419 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash -592601394, now seen corresponding path program 1 times [2020-10-15 04:47:09,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:09,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047758143] [2020-10-15 04:47:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:09,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:09,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:14,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:14,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 879 [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 490 [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:47:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:14,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:14,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:14,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:14,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:14,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:14,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:14,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:14,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:14,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:14,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8061 backedges. 4405 proven. 0 refuted. 0 times theorem prover too weak. 3656 trivial. 0 not checked. [2020-10-15 04:47:14,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047758143] [2020-10-15 04:47:14,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:14,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:14,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408385641] [2020-10-15 04:47:14,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:14,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:14,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:14,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:14,968 INFO L87 Difference]: Start difference. First operand 39891 states and 56226 transitions. Second operand 3 states. [2020-10-15 04:47:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:15,651 INFO L93 Difference]: Finished difference Result 84209 states and 120375 transitions. [2020-10-15 04:47:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:15,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 871 [2020-10-15 04:47:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:15,699 INFO L225 Difference]: With dead ends: 84209 [2020-10-15 04:47:15,700 INFO L226 Difference]: Without dead ends: 44331 [2020-10-15 04:47:15,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44331 states. [2020-10-15 04:47:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44331 to 43971. [2020-10-15 04:47:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43971 states. [2020-10-15 04:47:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43971 states to 43971 states and 60906 transitions. [2020-10-15 04:47:16,807 INFO L78 Accepts]: Start accepts. Automaton has 43971 states and 60906 transitions. Word has length 871 [2020-10-15 04:47:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:16,807 INFO L479 AbstractCegarLoop]: Abstraction has 43971 states and 60906 transitions. [2020-10-15 04:47:16,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 43971 states and 60906 transitions. [2020-10-15 04:47:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-15 04:47:16,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:16,843 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 26, 26, 25, 25, 24, 24, 21, 21, 21, 21, 17, 13, 13, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:16,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:47:16,843 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:16,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:16,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1582451968, now seen corresponding path program 1 times [2020-10-15 04:47:16,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:16,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065078108] [2020-10-15 04:47:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:21,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 975 [2020-10-15 04:47:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:47:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:47:21,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:21,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 788 [2020-10-15 04:47:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:47:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:22,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:22,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10176 backedges. 3351 proven. 0 refuted. 0 times theorem prover too weak. 6825 trivial. 0 not checked. [2020-10-15 04:47:22,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065078108] [2020-10-15 04:47:22,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:22,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:22,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140643689] [2020-10-15 04:47:22,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:22,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:22,529 INFO L87 Difference]: Start difference. First operand 43971 states and 60906 transitions. Second operand 3 states. [2020-10-15 04:47:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:23,336 INFO L93 Difference]: Finished difference Result 93497 states and 131783 transitions. [2020-10-15 04:47:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:23,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 967 [2020-10-15 04:47:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:23,397 INFO L225 Difference]: With dead ends: 93497 [2020-10-15 04:47:23,397 INFO L226 Difference]: Without dead ends: 48771 [2020-10-15 04:47:23,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48771 states. [2020-10-15 04:47:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48771 to 48291. [2020-10-15 04:47:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48291 states. [2020-10-15 04:47:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48291 states to 48291 states and 68450 transitions. [2020-10-15 04:47:24,262 INFO L78 Accepts]: Start accepts. Automaton has 48291 states and 68450 transitions. Word has length 967 [2020-10-15 04:47:24,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:24,262 INFO L479 AbstractCegarLoop]: Abstraction has 48291 states and 68450 transitions. [2020-10-15 04:47:24,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:24,263 INFO L276 IsEmpty]: Start isEmpty. Operand 48291 states and 68450 transitions. [2020-10-15 04:47:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2020-10-15 04:47:24,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:24,310 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 29, 29, 28, 28, 27, 27, 24, 24, 24, 24, 20, 16, 16, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:24,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:47:24,310 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1681251626, now seen corresponding path program 1 times [2020-10-15 04:47:24,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:24,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857610895] [2020-10-15 04:47:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:26,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:29,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-15 04:47:29,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:47:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:47:29,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:29,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 699 [2020-10-15 04:47:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:47:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:29,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:29,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12612 backedges. 6224 proven. 0 refuted. 0 times theorem prover too weak. 6388 trivial. 0 not checked. [2020-10-15 04:47:29,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857610895] [2020-10-15 04:47:29,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:29,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:29,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521609689] [2020-10-15 04:47:29,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:29,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:29,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:29,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:29,906 INFO L87 Difference]: Start difference. First operand 48291 states and 68450 transitions. Second operand 3 states. [2020-10-15 04:47:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:30,911 INFO L93 Difference]: Finished difference Result 103121 states and 147268 transitions. [2020-10-15 04:47:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:30,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1069 [2020-10-15 04:47:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:30,973 INFO L225 Difference]: With dead ends: 103121 [2020-10-15 04:47:30,973 INFO L226 Difference]: Without dead ends: 54507 [2020-10-15 04:47:31,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54507 states. [2020-10-15 04:47:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54507 to 52615. [2020-10-15 04:47:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52615 states. [2020-10-15 04:47:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52615 states to 52615 states and 75510 transitions. [2020-10-15 04:47:31,874 INFO L78 Accepts]: Start accepts. Automaton has 52615 states and 75510 transitions. Word has length 1069 [2020-10-15 04:47:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:31,875 INFO L479 AbstractCegarLoop]: Abstraction has 52615 states and 75510 transitions. [2020-10-15 04:47:31,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand 52615 states and 75510 transitions. [2020-10-15 04:47:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2020-10-15 04:47:31,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:31,927 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 34, 34, 34, 31, 31, 28, 28, 27, 27, 24, 24, 24, 24, 20, 16, 16, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:31,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:47:31,928 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:31,928 INFO L82 PathProgramCache]: Analyzing trace with hash 907834954, now seen corresponding path program 1 times [2020-10-15 04:47:31,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:31,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798343085] [2020-10-15 04:47:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:32,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:32,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:36,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:47:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-15 04:47:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:37,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:37,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13811 backedges. 7358 proven. 3 refuted. 0 times theorem prover too weak. 6450 trivial. 0 not checked. [2020-10-15 04:47:38,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798343085] [2020-10-15 04:47:38,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:38,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:47:38,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146817758] [2020-10-15 04:47:38,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:47:38,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:38,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:47:38,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:47:38,798 INFO L87 Difference]: Start difference. First operand 52615 states and 75510 transitions. Second operand 5 states. [2020-10-15 04:47:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:40,200 INFO L93 Difference]: Finished difference Result 130717 states and 187339 transitions. [2020-10-15 04:47:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:47:40,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1111 [2020-10-15 04:47:40,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:40,288 INFO L225 Difference]: With dead ends: 130717 [2020-10-15 04:47:40,289 INFO L226 Difference]: Without dead ends: 78115 [2020-10-15 04:47:40,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:47:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78115 states. [2020-10-15 04:47:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78115 to 66601. [2020-10-15 04:47:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66601 states. [2020-10-15 04:47:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66601 states to 66601 states and 95335 transitions. [2020-10-15 04:47:41,625 INFO L78 Accepts]: Start accepts. Automaton has 66601 states and 95335 transitions. Word has length 1111 [2020-10-15 04:47:41,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:41,625 INFO L479 AbstractCegarLoop]: Abstraction has 66601 states and 95335 transitions. [2020-10-15 04:47:41,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:47:41,626 INFO L276 IsEmpty]: Start isEmpty. Operand 66601 states and 95335 transitions. [2020-10-15 04:47:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2020-10-15 04:47:41,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:41,690 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 34, 34, 34, 31, 31, 28, 28, 27, 27, 24, 24, 24, 24, 20, 16, 16, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:41,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:47:41,690 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:41,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:41,690 INFO L82 PathProgramCache]: Analyzing trace with hash 693177802, now seen corresponding path program 1 times [2020-10-15 04:47:41,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:41,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311474054] [2020-10-15 04:47:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:46,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:46,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1123 [2020-10-15 04:47:46,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:47:46,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:47:46,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:46,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:46,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 746 [2020-10-15 04:47:46,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 04:47:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:46,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:46,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:46,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:46,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:46,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:46,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13817 backedges. 6628 proven. 0 refuted. 0 times theorem prover too weak. 7189 trivial. 0 not checked. [2020-10-15 04:47:47,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311474054] [2020-10-15 04:47:47,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:47,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:47,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935668148] [2020-10-15 04:47:47,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:47,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:47,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:47,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:47,341 INFO L87 Difference]: Start difference. First operand 66601 states and 95335 transitions. Second operand 3 states. [2020-10-15 04:47:48,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:48,795 INFO L93 Difference]: Finished difference Result 143467 states and 207281 transitions. [2020-10-15 04:47:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:48,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1115 [2020-10-15 04:47:48,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:48,887 INFO L225 Difference]: With dead ends: 143467 [2020-10-15 04:47:48,887 INFO L226 Difference]: Without dead ends: 76675 [2020-10-15 04:47:48,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76675 states. [2020-10-15 04:47:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76675 to 72451. [2020-10-15 04:47:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72451 states. [2020-10-15 04:47:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72451 states to 72451 states and 105061 transitions. [2020-10-15 04:47:50,314 INFO L78 Accepts]: Start accepts. Automaton has 72451 states and 105061 transitions. Word has length 1115 [2020-10-15 04:47:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:50,314 INFO L479 AbstractCegarLoop]: Abstraction has 72451 states and 105061 transitions. [2020-10-15 04:47:50,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 72451 states and 105061 transitions. [2020-10-15 04:47:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1168 [2020-10-15 04:47:50,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:50,388 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 36, 36, 36, 33, 33, 30, 30, 27, 27, 24, 24, 24, 24, 20, 16, 16, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:50,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 04:47:50,389 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash -130247478, now seen corresponding path program 1 times [2020-10-15 04:47:50,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:50,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669814825] [2020-10-15 04:47:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:50,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:55,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:55,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1175 [2020-10-15 04:47:55,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:47:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:47:55,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:55,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:47:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 377 [2020-10-15 04:47:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:55,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:55,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:55,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:55,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:55,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15207 backedges. 7877 proven. 3 refuted. 0 times theorem prover too weak. 7327 trivial. 0 not checked. [2020-10-15 04:47:56,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669814825] [2020-10-15 04:47:56,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:56,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:47:56,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961071168] [2020-10-15 04:47:56,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:47:56,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:56,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:47:56,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:47:56,992 INFO L87 Difference]: Start difference. First operand 72451 states and 105061 transitions. Second operand 5 states. [2020-10-15 04:47:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:59,391 INFO L93 Difference]: Finished difference Result 200006 states and 288322 transitions. [2020-10-15 04:47:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:47:59,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1167 [2020-10-15 04:47:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:59,540 INFO L225 Difference]: With dead ends: 200006 [2020-10-15 04:47:59,541 INFO L226 Difference]: Without dead ends: 127568 [2020-10-15 04:47:59,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:47:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127568 states. [2020-10-15 04:48:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127568 to 72451. [2020-10-15 04:48:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72451 states. [2020-10-15 04:48:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72451 states to 72451 states and 104827 transitions. [2020-10-15 04:48:01,285 INFO L78 Accepts]: Start accepts. Automaton has 72451 states and 104827 transitions. Word has length 1167 [2020-10-15 04:48:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:01,286 INFO L479 AbstractCegarLoop]: Abstraction has 72451 states and 104827 transitions. [2020-10-15 04:48:01,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:48:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 72451 states and 104827 transitions. [2020-10-15 04:48:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2020-10-15 04:48:01,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:01,356 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 36, 36, 36, 33, 33, 30, 30, 27, 27, 24, 24, 24, 24, 20, 16, 16, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:01,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 04:48:01,356 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:01,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1726996388, now seen corresponding path program 1 times [2020-10-15 04:48:01,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:01,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505036949] [2020-10-15 04:48:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:01,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking...