/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:48:04,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:48:04,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:48:04,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:48:04,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:48:04,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:48:04,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:48:04,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:48:04,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:48:04,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:48:04,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:48:04,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:48:04,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:48:04,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:48:04,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:48:04,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:48:04,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:48:04,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:48:04,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:48:04,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:48:04,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:48:04,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:48:04,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:48:04,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:48:04,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:48:04,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:48:04,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:48:04,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:48:04,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:48:04,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:48:04,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:48:04,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:48:04,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:48:04,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:48:04,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:48:04,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:48:04,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:48:04,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:48:04,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:48:04,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:48:04,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:48:04,983 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 [2020-09-25 07:48:05,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:48:05,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:48:05,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:48:05,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:48:05,012 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:48:05,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:48:05,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:48:05,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:48:05,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:48:05,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:48:05,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:48:05,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:48:05,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:48:05,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:48:05,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:48:05,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:48:05,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:48:05,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:48:05,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:48:05,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:48:05,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:48:05,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:48:05,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:48:05,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:48:05,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:48:05,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:48:05,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:48:05,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:48:05,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:48:05,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:48:05,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:48:05,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:48:05,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:48:05,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:48:05,500 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:48:05,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 07:48:05,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af2c46b9d/110183a582ab4bd2a8d600143d56abdc/FLAG8b745d658 [2020-09-25 07:48:06,168 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:48:06,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 07:48:06,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af2c46b9d/110183a582ab4bd2a8d600143d56abdc/FLAG8b745d658 [2020-09-25 07:48:06,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af2c46b9d/110183a582ab4bd2a8d600143d56abdc [2020-09-25 07:48:06,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:48:06,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:48:06,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:06,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:48:06,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:48:06,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:06" (1/1) ... [2020-09-25 07:48:06,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:06, skipping insertion in model container [2020-09-25 07:48:06,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:06" (1/1) ... [2020-09-25 07:48:06,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:48:06,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:48:06,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:06,874 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:48:07,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:07,092 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:48:07,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07 WrapperNode [2020-09-25 07:48:07,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:07,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:48:07,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:48:07,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:48:07,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:48:07,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:48:07,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:48:07,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:48:07,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:48:07,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:48:07,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:48:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 07:48:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:48:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:48:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 07:48:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:48:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 07:48:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 07:48:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 07:48:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:48:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:48:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:48:07,544 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 07:48:08,293 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 07:48:08,293 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 07:48:08,313 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:48:08,313 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:48:08,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:08 BoogieIcfgContainer [2020-09-25 07:48:08,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:48:08,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:48:08,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:48:08,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:48:08,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:48:06" (1/3) ... [2020-09-25 07:48:08,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e823f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:08, skipping insertion in model container [2020-09-25 07:48:08,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07" (2/3) ... [2020-09-25 07:48:08,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e823f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:08, skipping insertion in model container [2020-09-25 07:48:08,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:08" (3/3) ... [2020-09-25 07:48:08,333 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 07:48:08,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:48:08,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:48:08,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:48:08,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:48:08,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:48:08,419 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:48:08,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:48:08,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:48:08,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:48:08,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:48:08,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:48:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 07:48:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 07:48:08,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:08,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:08,491 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:08,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:08,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 07:48:08,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:08,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992278930] [2020-09-25 07:48:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:10,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 07:48:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-09-25 07:48:10,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:10,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:48:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:48:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-09-25 07:48:10,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:10,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:10,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:10,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:10,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:48:10,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:10,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:10,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:10,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:10,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:10,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992278930] [2020-09-25 07:48:10,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:10,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:10,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153830210] [2020-09-25 07:48:10,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:10,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:10,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:10,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:10,582 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 4 states. [2020-09-25 07:48:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:10,994 INFO L93 Difference]: Finished difference Result 893 states and 1167 transitions. [2020-09-25 07:48:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:10,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-09-25 07:48:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:11,021 INFO L225 Difference]: With dead ends: 893 [2020-09-25 07:48:11,021 INFO L226 Difference]: Without dead ends: 501 [2020-09-25 07:48:11,029 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 [2020-09-25 07:48:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-25 07:48:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 465. [2020-09-25 07:48:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-09-25 07:48:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 563 transitions. [2020-09-25 07:48:11,132 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 563 transitions. Word has length 161 [2020-09-25 07:48:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:11,135 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 563 transitions. [2020-09-25 07:48:11,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:11,135 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 563 transitions. [2020-09-25 07:48:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 07:48:11,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:11,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:11,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:48:11,147 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:11,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:11,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1922098023, now seen corresponding path program 1 times [2020-09-25 07:48:11,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:11,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575114302] [2020-09-25 07:48:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:13,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 07:48:13,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:48:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2092 [2020-09-25 07:48:13,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:13,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:48:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:48:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:13,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:13,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:13,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:13,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575114302] [2020-09-25 07:48:13,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:13,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:13,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011921057] [2020-09-25 07:48:13,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:13,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:13,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:13,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:13,370 INFO L87 Difference]: Start difference. First operand 465 states and 563 transitions. Second operand 4 states. [2020-09-25 07:48:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:13,623 INFO L93 Difference]: Finished difference Result 824 states and 1023 transitions. [2020-09-25 07:48:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:13,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 07:48:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:13,628 INFO L225 Difference]: With dead ends: 824 [2020-09-25 07:48:13,628 INFO L226 Difference]: Without dead ends: 498 [2020-09-25 07:48:13,631 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 [2020-09-25 07:48:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-09-25 07:48:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 441. [2020-09-25 07:48:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-25 07:48:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 536 transitions. [2020-09-25 07:48:13,667 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 536 transitions. Word has length 167 [2020-09-25 07:48:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:13,671 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 536 transitions. [2020-09-25 07:48:13,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 536 transitions. [2020-09-25 07:48:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 07:48:13,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:13,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:13,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:48:13,680 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:13,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2025816329, now seen corresponding path program 1 times [2020-09-25 07:48:13,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:13,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871264845] [2020-09-25 07:48:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 07:48:15,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:15,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1514 [2020-09-25 07:48:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:15,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:48:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:48:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:15,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:15,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871264845] [2020-09-25 07:48:15,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:15,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:15,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803980114] [2020-09-25 07:48:15,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:15,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:15,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:15,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:15,322 INFO L87 Difference]: Start difference. First operand 441 states and 536 transitions. Second operand 4 states. [2020-09-25 07:48:15,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:15,632 INFO L93 Difference]: Finished difference Result 792 states and 997 transitions. [2020-09-25 07:48:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:15,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-09-25 07:48:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:15,636 INFO L225 Difference]: With dead ends: 792 [2020-09-25 07:48:15,636 INFO L226 Difference]: Without dead ends: 490 [2020-09-25 07:48:15,637 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 [2020-09-25 07:48:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-25 07:48:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 479. [2020-09-25 07:48:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 07:48:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 07:48:15,654 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 172 [2020-09-25 07:48:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:15,654 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 07:48:15,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 07:48:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 07:48:15,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:15,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:15,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:48:15,658 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1867249191, now seen corresponding path program 1 times [2020-09-25 07:48:15,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:15,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130051627] [2020-09-25 07:48:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:16,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 07:48:16,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-09-25 07:48:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:16,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:48:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:48:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:16,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:16,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:16,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:16,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:16,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:16,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:16,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:16,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130051627] [2020-09-25 07:48:16,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:16,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:16,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768319193] [2020-09-25 07:48:16,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:16,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:16,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:16,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:16,998 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 4 states. [2020-09-25 07:48:17,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:17,219 INFO L93 Difference]: Finished difference Result 885 states and 1098 transitions. [2020-09-25 07:48:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:17,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 07:48:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:17,223 INFO L225 Difference]: With dead ends: 885 [2020-09-25 07:48:17,223 INFO L226 Difference]: Without dead ends: 545 [2020-09-25 07:48:17,225 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 [2020-09-25 07:48:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-09-25 07:48:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 479. [2020-09-25 07:48:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 07:48:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 07:48:17,239 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 173 [2020-09-25 07:48:17,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:17,240 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 07:48:17,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 07:48:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 07:48:17,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:17,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:17,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:48:17,244 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:17,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1166211591, now seen corresponding path program 1 times [2020-09-25 07:48:17,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:17,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993087713] [2020-09-25 07:48:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:21,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 07:48:21,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:48:21,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3809 [2020-09-25 07:48:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:21,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:48:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:48:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:21,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:21,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:21,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:21,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993087713] [2020-09-25 07:48:21,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:21,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:21,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124694624] [2020-09-25 07:48:21,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:21,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:21,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:21,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:21,196 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 4 states. [2020-09-25 07:48:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:21,451 INFO L93 Difference]: Finished difference Result 943 states and 1172 transitions. [2020-09-25 07:48:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:21,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-09-25 07:48:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:21,455 INFO L225 Difference]: With dead ends: 943 [2020-09-25 07:48:21,455 INFO L226 Difference]: Without dead ends: 603 [2020-09-25 07:48:21,456 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 [2020-09-25 07:48:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-09-25 07:48:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 510. [2020-09-25 07:48:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-09-25 07:48:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 618 transitions. [2020-09-25 07:48:21,474 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 618 transitions. Word has length 174 [2020-09-25 07:48:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:21,474 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 618 transitions. [2020-09-25 07:48:21,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 618 transitions. [2020-09-25 07:48:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:48:21,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:21,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:21,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:48:21,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:21,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1768045815, now seen corresponding path program 1 times [2020-09-25 07:48:21,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:21,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108706292] [2020-09-25 07:48:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:24,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 07:48:24,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:48:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-09-25 07:48:24,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:24,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:48:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:48:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:24,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:24,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:24,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:24,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:24,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108706292] [2020-09-25 07:48:24,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:24,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:24,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949181227] [2020-09-25 07:48:24,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:24,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:24,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:24,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:24,532 INFO L87 Difference]: Start difference. First operand 510 states and 618 transitions. Second operand 4 states. [2020-09-25 07:48:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:24,771 INFO L93 Difference]: Finished difference Result 974 states and 1209 transitions. [2020-09-25 07:48:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:24,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-09-25 07:48:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:24,778 INFO L225 Difference]: With dead ends: 974 [2020-09-25 07:48:24,778 INFO L226 Difference]: Without dead ends: 603 [2020-09-25 07:48:24,780 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 [2020-09-25 07:48:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-09-25 07:48:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 479. [2020-09-25 07:48:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 07:48:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 07:48:24,798 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 175 [2020-09-25 07:48:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:24,798 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 07:48:24,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 07:48:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 07:48:24,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:24,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:24,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:48:24,802 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:24,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1172377495, now seen corresponding path program 1 times [2020-09-25 07:48:24,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:24,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804908996] [2020-09-25 07:48:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:25,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:25,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 07:48:25,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:25,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-09-25 07:48:25,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:25,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 07:48:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 07:48:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:25,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:25,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:25,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:25,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:25,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804908996] [2020-09-25 07:48:25,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:25,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:25,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516582931] [2020-09-25 07:48:25,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:25,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:25,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:25,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:25,368 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 3 states. [2020-09-25 07:48:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:25,598 INFO L93 Difference]: Finished difference Result 1137 states and 1435 transitions. [2020-09-25 07:48:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:25,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-09-25 07:48:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:25,605 INFO L225 Difference]: With dead ends: 1137 [2020-09-25 07:48:25,606 INFO L226 Difference]: Without dead ends: 797 [2020-09-25 07:48:25,609 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 [2020-09-25 07:48:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-09-25 07:48:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 795. [2020-09-25 07:48:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-09-25 07:48:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 973 transitions. [2020-09-25 07:48:25,646 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 973 transitions. Word has length 176 [2020-09-25 07:48:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:25,647 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 973 transitions. [2020-09-25 07:48:25,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 973 transitions. [2020-09-25 07:48:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:48:25,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:25,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:25,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:48:25,654 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203184, now seen corresponding path program 1 times [2020-09-25 07:48:25,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:25,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970841609] [2020-09-25 07:48:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:26,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 07:48:26,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-09-25 07:48:26,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:26,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:48:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:48:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 07:48:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:26,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:26,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:26,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:26,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:26,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970841609] [2020-09-25 07:48:26,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:26,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:48:26,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636434616] [2020-09-25 07:48:26,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:48:26,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:26,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:48:26,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:48:26,493 INFO L87 Difference]: Start difference. First operand 795 states and 973 transitions. Second operand 7 states. [2020-09-25 07:48:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:27,118 INFO L93 Difference]: Finished difference Result 2115 states and 2636 transitions. [2020-09-25 07:48:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:48:27,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-09-25 07:48:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:27,130 INFO L225 Difference]: With dead ends: 2115 [2020-09-25 07:48:27,130 INFO L226 Difference]: Without dead ends: 1459 [2020-09-25 07:48:27,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:48:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-09-25 07:48:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1057. [2020-09-25 07:48:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-09-25 07:48:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1330 transitions. [2020-09-25 07:48:27,196 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1330 transitions. Word has length 179 [2020-09-25 07:48:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:27,197 INFO L479 AbstractCegarLoop]: Abstraction has 1057 states and 1330 transitions. [2020-09-25 07:48:27,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:48:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1330 transitions. [2020-09-25 07:48:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 07:48:27,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:27,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:27,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:48:27,206 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:27,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:27,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-25 07:48:27,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:27,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822715143] [2020-09-25 07:48:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 07:48:27,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:27,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 07:48:27,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 07:48:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:48:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:27,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:27,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:27,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822715143] [2020-09-25 07:48:27,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:27,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:27,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700376373] [2020-09-25 07:48:27,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:27,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:27,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,678 INFO L87 Difference]: Start difference. First operand 1057 states and 1330 transitions. Second operand 3 states. [2020-09-25 07:48:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:27,881 INFO L93 Difference]: Finished difference Result 1977 states and 2558 transitions. [2020-09-25 07:48:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:27,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-25 07:48:27,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:27,890 INFO L225 Difference]: With dead ends: 1977 [2020-09-25 07:48:27,890 INFO L226 Difference]: Without dead ends: 1498 [2020-09-25 07:48:27,892 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 [2020-09-25 07:48:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-09-25 07:48:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1496. [2020-09-25 07:48:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-09-25 07:48:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1886 transitions. [2020-09-25 07:48:27,967 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1886 transitions. Word has length 202 [2020-09-25 07:48:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:27,970 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 1886 transitions. [2020-09-25 07:48:27,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1886 transitions. [2020-09-25 07:48:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 07:48:27,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:27,975 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:27,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:48:27,976 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:27,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1593461350, now seen corresponding path program 1 times [2020-09-25 07:48:27,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:27,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522224839] [2020-09-25 07:48:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 07:48:29,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-09-25 07:48:29,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:48:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 07:48:29,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:29,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:48:29,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522224839] [2020-09-25 07:48:29,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:29,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:48:29,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430224806] [2020-09-25 07:48:29,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:48:29,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:29,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:48:29,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:48:29,510 INFO L87 Difference]: Start difference. First operand 1496 states and 1886 transitions. Second operand 6 states. [2020-09-25 07:48:29,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:29,822 INFO L93 Difference]: Finished difference Result 2964 states and 3803 transitions. [2020-09-25 07:48:29,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:48:29,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 07:48:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:29,834 INFO L225 Difference]: With dead ends: 2964 [2020-09-25 07:48:29,834 INFO L226 Difference]: Without dead ends: 1607 [2020-09-25 07:48:29,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:48:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-09-25 07:48:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1601. [2020-09-25 07:48:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2020-09-25 07:48:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2048 transitions. [2020-09-25 07:48:29,935 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2048 transitions. Word has length 203 [2020-09-25 07:48:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:29,936 INFO L479 AbstractCegarLoop]: Abstraction has 1601 states and 2048 transitions. [2020-09-25 07:48:29,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:48:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2048 transitions. [2020-09-25 07:48:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 07:48:29,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:29,943 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:29,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:48:29,943 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:29,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:29,944 INFO L82 PathProgramCache]: Analyzing trace with hash 438775901, now seen corresponding path program 1 times [2020-09-25 07:48:29,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:29,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690185254] [2020-09-25 07:48:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:31,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:31,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 07:48:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-09-25 07:48:31,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:31,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:48:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 07:48:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:31,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:31,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:31,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:31,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:31,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:31,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:48:31,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690185254] [2020-09-25 07:48:31,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:31,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:48:31,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501757106] [2020-09-25 07:48:31,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:48:31,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:31,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:48:31,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:48:31,435 INFO L87 Difference]: Start difference. First operand 1601 states and 2048 transitions. Second operand 6 states. [2020-09-25 07:48:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:31,736 INFO L93 Difference]: Finished difference Result 3156 states and 4079 transitions. [2020-09-25 07:48:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:48:31,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-09-25 07:48:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:31,744 INFO L225 Difference]: With dead ends: 3156 [2020-09-25 07:48:31,744 INFO L226 Difference]: Without dead ends: 1694 [2020-09-25 07:48:31,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:48:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-09-25 07:48:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1667. [2020-09-25 07:48:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-09-25 07:48:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2141 transitions. [2020-09-25 07:48:31,820 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2141 transitions. Word has length 208 [2020-09-25 07:48:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:31,821 INFO L479 AbstractCegarLoop]: Abstraction has 1667 states and 2141 transitions. [2020-09-25 07:48:31,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:48:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2141 transitions. [2020-09-25 07:48:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 07:48:31,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:31,828 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:31,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:48:31,829 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:31,829 INFO L82 PathProgramCache]: Analyzing trace with hash -747548647, now seen corresponding path program 1 times [2020-09-25 07:48:31,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:31,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885487171] [2020-09-25 07:48:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:31,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:32,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:32,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 07:48:32,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 07:48:32,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:32,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 07:48:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:48:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:32,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:32,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:32,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:32,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:32,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:32,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:32,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 07:48:32,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885487171] [2020-09-25 07:48:32,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:32,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:32,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116044124] [2020-09-25 07:48:32,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:32,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:32,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:32,531 INFO L87 Difference]: Start difference. First operand 1667 states and 2141 transitions. Second operand 3 states. [2020-09-25 07:48:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:32,640 INFO L93 Difference]: Finished difference Result 4620 states and 6008 transitions. [2020-09-25 07:48:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:32,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-09-25 07:48:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:32,655 INFO L225 Difference]: With dead ends: 4620 [2020-09-25 07:48:32,655 INFO L226 Difference]: Without dead ends: 3092 [2020-09-25 07:48:32,659 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 [2020-09-25 07:48:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-09-25 07:48:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3090. [2020-09-25 07:48:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3090 states. [2020-09-25 07:48:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 4003 transitions. [2020-09-25 07:48:32,766 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 4003 transitions. Word has length 208 [2020-09-25 07:48:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:32,767 INFO L479 AbstractCegarLoop]: Abstraction has 3090 states and 4003 transitions. [2020-09-25 07:48:32,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 4003 transitions. [2020-09-25 07:48:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 07:48:32,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:32,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:32,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:48:32,774 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:32,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1289279705, now seen corresponding path program 1 times [2020-09-25 07:48:32,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:32,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055265713] [2020-09-25 07:48:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 07:48:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:48:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4383 [2020-09-25 07:48:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:37,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-09-25 07:48:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:48:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:37,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:37,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:37,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:37,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:48:37,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055265713] [2020-09-25 07:48:37,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:37,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:37,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389079972] [2020-09-25 07:48:37,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:37,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:37,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:37,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:37,261 INFO L87 Difference]: Start difference. First operand 3090 states and 4003 transitions. Second operand 3 states. [2020-09-25 07:48:37,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:37,350 INFO L93 Difference]: Finished difference Result 5789 states and 7533 transitions. [2020-09-25 07:48:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:37,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-09-25 07:48:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:37,366 INFO L225 Difference]: With dead ends: 5789 [2020-09-25 07:48:37,366 INFO L226 Difference]: Without dead ends: 2808 [2020-09-25 07:48:37,384 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 [2020-09-25 07:48:37,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2020-09-25 07:48:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2808. [2020-09-25 07:48:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2020-09-25 07:48:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3517 transitions. [2020-09-25 07:48:37,526 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3517 transitions. Word has length 209 [2020-09-25 07:48:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:37,527 INFO L479 AbstractCegarLoop]: Abstraction has 2808 states and 3517 transitions. [2020-09-25 07:48:37,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3517 transitions. [2020-09-25 07:48:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 07:48:37,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:37,536 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:37,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 07:48:37,536 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:37,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1767645779, now seen corresponding path program 1 times [2020-09-25 07:48:37,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:37,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107520057] [2020-09-25 07:48:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:38,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:38,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 07:48:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-25 07:48:38,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:38,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:48:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 07:48:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:38,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:38,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:38,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:38,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:38,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:38,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:38,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:48:38,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107520057] [2020-09-25 07:48:38,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:38,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:48:38,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335563317] [2020-09-25 07:48:38,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:48:38,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:38,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:48:38,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:48:38,811 INFO L87 Difference]: Start difference. First operand 2808 states and 3517 transitions. Second operand 6 states. [2020-09-25 07:48:39,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:39,054 INFO L93 Difference]: Finished difference Result 5538 states and 6960 transitions. [2020-09-25 07:48:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:48:39,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-09-25 07:48:39,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:39,068 INFO L225 Difference]: With dead ends: 5538 [2020-09-25 07:48:39,069 INFO L226 Difference]: Without dead ends: 2869 [2020-09-25 07:48:39,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:48:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-09-25 07:48:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2819. [2020-09-25 07:48:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2020-09-25 07:48:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3528 transitions. [2020-09-25 07:48:39,166 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3528 transitions. Word has length 209 [2020-09-25 07:48:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:39,167 INFO L479 AbstractCegarLoop]: Abstraction has 2819 states and 3528 transitions. [2020-09-25 07:48:39,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:48:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3528 transitions. [2020-09-25 07:48:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 07:48:39,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:39,174 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:39,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 07:48:39,175 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:39,175 INFO L82 PathProgramCache]: Analyzing trace with hash -478339839, now seen corresponding path program 1 times [2020-09-25 07:48:39,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:39,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184564346] [2020-09-25 07:48:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:39,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 07:48:39,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-09-25 07:48:39,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:39,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 07:48:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:48:39,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:39,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:39,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:48:39,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184564346] [2020-09-25 07:48:39,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:39,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:39,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014166667] [2020-09-25 07:48:39,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:39,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:39,827 INFO L87 Difference]: Start difference. First operand 2819 states and 3528 transitions. Second operand 3 states. [2020-09-25 07:48:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:39,999 INFO L93 Difference]: Finished difference Result 4629 states and 5836 transitions. [2020-09-25 07:48:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:40,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2020-09-25 07:48:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:40,009 INFO L225 Difference]: With dead ends: 4629 [2020-09-25 07:48:40,010 INFO L226 Difference]: Without dead ends: 1960 [2020-09-25 07:48:40,015 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 [2020-09-25 07:48:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-09-25 07:48:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1960. [2020-09-25 07:48:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-09-25 07:48:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2461 transitions. [2020-09-25 07:48:40,075 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2461 transitions. Word has length 212 [2020-09-25 07:48:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:40,075 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 2461 transitions. [2020-09-25 07:48:40,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2461 transitions. [2020-09-25 07:48:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 07:48:40,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:40,079 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:40,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 07:48:40,080 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:40,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1924666477, now seen corresponding path program 1 times [2020-09-25 07:48:40,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:40,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508919504] [2020-09-25 07:48:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:40,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:40,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:40,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 07:48:40,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-25 07:48:40,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:40,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 07:48:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:48:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:40,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:40,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:40,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:40,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:40,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:40,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508919504] [2020-09-25 07:48:40,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:40,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:48:40,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347177194] [2020-09-25 07:48:40,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:48:40,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:40,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:48:40,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:48:40,816 INFO L87 Difference]: Start difference. First operand 1960 states and 2461 transitions. Second operand 5 states. [2020-09-25 07:48:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:41,291 INFO L93 Difference]: Finished difference Result 6238 states and 7897 transitions. [2020-09-25 07:48:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:48:41,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-09-25 07:48:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:41,320 INFO L225 Difference]: With dead ends: 6238 [2020-09-25 07:48:41,320 INFO L226 Difference]: Without dead ends: 4433 [2020-09-25 07:48:41,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:48:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2020-09-25 07:48:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 2024. [2020-09-25 07:48:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-09-25 07:48:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2545 transitions. [2020-09-25 07:48:41,471 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2545 transitions. Word has length 213 [2020-09-25 07:48:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:41,471 INFO L479 AbstractCegarLoop]: Abstraction has 2024 states and 2545 transitions. [2020-09-25 07:48:41,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:48:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2545 transitions. [2020-09-25 07:48:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 07:48:41,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:41,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:41,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 07:48:41,481 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:41,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-25 07:48:41,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:41,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344489951] [2020-09-25 07:48:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 07:48:41,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:48:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 07:48:41,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 07:48:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:48:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:48:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:41,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:48:41,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344489951] [2020-09-25 07:48:41,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:41,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:41,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462677752] [2020-09-25 07:48:41,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:41,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:41,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:41,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:41,979 INFO L87 Difference]: Start difference. First operand 2024 states and 2545 transitions. Second operand 3 states. [2020-09-25 07:48:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:42,260 INFO L93 Difference]: Finished difference Result 4791 states and 6124 transitions. [2020-09-25 07:48:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:42,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-25 07:48:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:42,287 INFO L225 Difference]: With dead ends: 4791 [2020-09-25 07:48:42,291 INFO L226 Difference]: Without dead ends: 2922 [2020-09-25 07:48:42,299 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 [2020-09-25 07:48:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-09-25 07:48:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2020-09-25 07:48:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2920 states. [2020-09-25 07:48:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3665 transitions. [2020-09-25 07:48:42,390 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3665 transitions. Word has length 230 [2020-09-25 07:48:42,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:42,390 INFO L479 AbstractCegarLoop]: Abstraction has 2920 states and 3665 transitions. [2020-09-25 07:48:42,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:42,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3665 transitions. [2020-09-25 07:48:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 07:48:42,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:42,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:42,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 07:48:42,396 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:42,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:42,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1847120940, now seen corresponding path program 1 times [2020-09-25 07:48:42,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:42,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240132050] [2020-09-25 07:48:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:43,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 07:48:43,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-09-25 07:48:43,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:43,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 07:48:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:48:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:43,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:43,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:48:43,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240132050] [2020-09-25 07:48:43,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:43,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:43,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144787079] [2020-09-25 07:48:43,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:43,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:43,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:43,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:43,213 INFO L87 Difference]: Start difference. First operand 2920 states and 3665 transitions. Second operand 3 states. [2020-09-25 07:48:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:43,364 INFO L93 Difference]: Finished difference Result 4867 states and 6143 transitions. [2020-09-25 07:48:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:43,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-25 07:48:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:43,371 INFO L225 Difference]: With dead ends: 4867 [2020-09-25 07:48:43,371 INFO L226 Difference]: Without dead ends: 2102 [2020-09-25 07:48:43,377 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 [2020-09-25 07:48:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2020-09-25 07:48:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2102. [2020-09-25 07:48:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-09-25 07:48:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2635 transitions. [2020-09-25 07:48:43,442 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2635 transitions. Word has length 240 [2020-09-25 07:48:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:43,443 INFO L479 AbstractCegarLoop]: Abstraction has 2102 states and 2635 transitions. [2020-09-25 07:48:43,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2635 transitions. [2020-09-25 07:48:43,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 07:48:43,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:43,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:43,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 07:48:43,449 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 400073983, now seen corresponding path program 1 times [2020-09-25 07:48:43,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:43,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793231366] [2020-09-25 07:48:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 07:48:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:48:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-25 07:48:44,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:44,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 07:48:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:48:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:44,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:44,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:44,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:44,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:48:44,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793231366] [2020-09-25 07:48:44,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:44,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:48:44,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656985052] [2020-09-25 07:48:44,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:48:44,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:44,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:48:44,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:48:44,104 INFO L87 Difference]: Start difference. First operand 2102 states and 2635 transitions. Second operand 5 states. [2020-09-25 07:48:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:44,773 INFO L93 Difference]: Finished difference Result 7572 states and 9751 transitions. [2020-09-25 07:48:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:48:44,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-09-25 07:48:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:44,785 INFO L225 Difference]: With dead ends: 7572 [2020-09-25 07:48:44,785 INFO L226 Difference]: Without dead ends: 5505 [2020-09-25 07:48:44,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:48:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2020-09-25 07:48:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 2522. [2020-09-25 07:48:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2522 states. [2020-09-25 07:48:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3147 transitions. [2020-09-25 07:48:44,885 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3147 transitions. Word has length 241 [2020-09-25 07:48:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:44,885 INFO L479 AbstractCegarLoop]: Abstraction has 2522 states and 3147 transitions. [2020-09-25 07:48:44,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:48:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3147 transitions. [2020-09-25 07:48:44,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 07:48:44,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:44,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:44,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 07:48:44,891 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:44,891 INFO L82 PathProgramCache]: Analyzing trace with hash -255766369, now seen corresponding path program 1 times [2020-09-25 07:48:44,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:44,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800358213] [2020-09-25 07:48:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 07:48:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:48:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:45,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:45,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:45,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:45,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:45,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:45,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:48:45,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800358213] [2020-09-25 07:48:45,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:45,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:48:45,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20046628] [2020-09-25 07:48:45,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:48:45,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:45,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:48:45,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:48:45,422 INFO L87 Difference]: Start difference. First operand 2522 states and 3147 transitions. Second operand 5 states. [2020-09-25 07:48:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:45,933 INFO L93 Difference]: Finished difference Result 8076 states and 10147 transitions. [2020-09-25 07:48:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:48:45,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-09-25 07:48:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:45,946 INFO L225 Difference]: With dead ends: 8076 [2020-09-25 07:48:45,947 INFO L226 Difference]: Without dead ends: 5589 [2020-09-25 07:48:45,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:48:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states. [2020-09-25 07:48:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5589 to 2764. [2020-09-25 07:48:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2020-09-25 07:48:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3433 transitions. [2020-09-25 07:48:46,062 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3433 transitions. Word has length 241 [2020-09-25 07:48:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:46,063 INFO L479 AbstractCegarLoop]: Abstraction has 2764 states and 3433 transitions. [2020-09-25 07:48:46,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:48:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3433 transitions. [2020-09-25 07:48:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 07:48:46,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:46,069 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:46,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 07:48:46,070 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:46,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:46,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1830826787, now seen corresponding path program 1 times [2020-09-25 07:48:46,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:46,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285767421] [2020-09-25 07:48:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:46,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:46,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 07:48:46,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 07:48:46,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:46,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 07:48:46,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 07:48:46,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:46,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:46,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:46,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:46,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:46,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 07:48:46,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285767421] [2020-09-25 07:48:46,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:46,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:46,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586829050] [2020-09-25 07:48:46,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:46,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:46,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:46,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:46,630 INFO L87 Difference]: Start difference. First operand 2764 states and 3433 transitions. Second operand 3 states. [2020-09-25 07:48:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:46,867 INFO L93 Difference]: Finished difference Result 6597 states and 8298 transitions. [2020-09-25 07:48:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:46,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 07:48:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:46,877 INFO L225 Difference]: With dead ends: 6597 [2020-09-25 07:48:46,878 INFO L226 Difference]: Without dead ends: 3988 [2020-09-25 07:48:46,883 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 [2020-09-25 07:48:46,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2020-09-25 07:48:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3986. [2020-09-25 07:48:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2020-09-25 07:48:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 4945 transitions. [2020-09-25 07:48:47,034 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 4945 transitions. Word has length 264 [2020-09-25 07:48:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:47,035 INFO L479 AbstractCegarLoop]: Abstraction has 3986 states and 4945 transitions. [2020-09-25 07:48:47,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 4945 transitions. [2020-09-25 07:48:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 07:48:47,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:47,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:47,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 07:48:47,043 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:47,044 INFO L82 PathProgramCache]: Analyzing trace with hash -962704645, now seen corresponding path program 1 times [2020-09-25 07:48:47,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:47,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094178045] [2020-09-25 07:48:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 07:48:47,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-09-25 07:48:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-09-25 07:48:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:47,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 07:48:47,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094178045] [2020-09-25 07:48:47,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:47,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:47,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704138372] [2020-09-25 07:48:47,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:47,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:47,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:47,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:47,965 INFO L87 Difference]: Start difference. First operand 3986 states and 4945 transitions. Second operand 3 states. [2020-09-25 07:48:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:48,112 INFO L93 Difference]: Finished difference Result 7877 states and 9803 transitions. [2020-09-25 07:48:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:48,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-09-25 07:48:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:48,123 INFO L225 Difference]: With dead ends: 7877 [2020-09-25 07:48:48,124 INFO L226 Difference]: Without dead ends: 4046 [2020-09-25 07:48:48,132 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 [2020-09-25 07:48:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-09-25 07:48:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3986. [2020-09-25 07:48:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2020-09-25 07:48:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 4933 transitions. [2020-09-25 07:48:48,296 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 4933 transitions. Word has length 271 [2020-09-25 07:48:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:48,296 INFO L479 AbstractCegarLoop]: Abstraction has 3986 states and 4933 transitions. [2020-09-25 07:48:48,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 4933 transitions. [2020-09-25 07:48:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 07:48:48,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:48,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:48,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 07:48:48,303 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1586602167, now seen corresponding path program 1 times [2020-09-25 07:48:48,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:48,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780398731] [2020-09-25 07:48:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 07:48:49,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:49,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-09-25 07:48:49,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 07:48:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:48:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:49,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:49,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 07:48:49,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780398731] [2020-09-25 07:48:49,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:49,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:49,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021908184] [2020-09-25 07:48:49,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:49,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:49,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:49,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:49,388 INFO L87 Difference]: Start difference. First operand 3986 states and 4933 transitions. Second operand 3 states. [2020-09-25 07:48:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:49,658 INFO L93 Difference]: Finished difference Result 7781 states and 9660 transitions. [2020-09-25 07:48:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:49,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2020-09-25 07:48:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:49,672 INFO L225 Difference]: With dead ends: 7781 [2020-09-25 07:48:49,673 INFO L226 Difference]: Without dead ends: 3950 [2020-09-25 07:48:49,679 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 [2020-09-25 07:48:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2020-09-25 07:48:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3948. [2020-09-25 07:48:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-09-25 07:48:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 4875 transitions. [2020-09-25 07:48:49,798 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 4875 transitions. Word has length 274 [2020-09-25 07:48:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:49,799 INFO L479 AbstractCegarLoop]: Abstraction has 3948 states and 4875 transitions. [2020-09-25 07:48:49,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 4875 transitions. [2020-09-25 07:48:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 07:48:49,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:49,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:49,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 07:48:49,806 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:49,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:49,806 INFO L82 PathProgramCache]: Analyzing trace with hash -964430198, now seen corresponding path program 1 times [2020-09-25 07:48:49,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:49,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967030263] [2020-09-25 07:48:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:50,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:50,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:50,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-25 07:48:50,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-25 07:48:50,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:50,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-09-25 07:48:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:48:50,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:50,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:50,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:50,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:50,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:50,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:50,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:50,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:50,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 07:48:50,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967030263] [2020-09-25 07:48:50,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:50,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:48:50,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096855891] [2020-09-25 07:48:50,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:48:50,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:50,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:48:50,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:48:50,832 INFO L87 Difference]: Start difference. First operand 3948 states and 4875 transitions. Second operand 5 states.