/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=0.6 --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_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:39:09,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:39:09,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:39:09,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:39:09,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:39:09,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:39:09,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:39:09,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:39:09,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:39:09,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:39:09,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:39:09,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:39:09,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:39:09,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:39:09,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:39:09,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:39:09,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:39:09,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:39:09,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:39:09,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:39:09,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:39:09,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:39:09,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:39:09,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:39:09,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:39:09,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:39:09,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:39:10,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:39:10,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:39:10,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:39:10,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:39:10,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:39:10,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:39:10,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:39:10,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:39:10,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:39:10,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:39:10,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:39:10,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:39:10,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:39:10,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:39:10,020 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 06:39:10,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:39:10,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:39:10,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:39:10,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:39:10,063 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:39:10,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:39:10,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:39:10,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:39:10,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:39:10,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:39:10,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:39:10,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:39:10,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:39:10,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:39:10,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:39:10,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:39:10,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:39:10,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:39:10,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:39:10,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:39:10,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:39:10,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:10,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:39:10,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:39:10,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:39:10,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:39:10,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:39:10,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:39:10,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:39:10,069 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:39:10,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:39:10,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:39:10,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:39:10,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:39:10,602 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:39:10,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 06:39:10,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1eb2f2c2/fcd2f456902b437886c9c9b77ab7995b/FLAG305ae8263 [2020-09-25 06:39:11,289 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:39:11,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 06:39:11,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1eb2f2c2/fcd2f456902b437886c9c9b77ab7995b/FLAG305ae8263 [2020-09-25 06:39:11,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1eb2f2c2/fcd2f456902b437886c9c9b77ab7995b [2020-09-25 06:39:11,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:39:11,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:39:11,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:11,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:39:11,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:39:11,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:11" (1/1) ... [2020-09-25 06:39:11,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5781f29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:11, skipping insertion in model container [2020-09-25 06:39:11,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:11" (1/1) ... [2020-09-25 06:39:11,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:39:11,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:39:11,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:11,961 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:39:12,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:12,173 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:39:12,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12 WrapperNode [2020-09-25 06:39:12,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:12,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:39:12,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:39:12,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:39:12,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (1/1) ... [2020-09-25 06:39:12,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (1/1) ... [2020-09-25 06:39:12,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (1/1) ... [2020-09-25 06:39:12,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (1/1) ... [2020-09-25 06:39:12,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (1/1) ... [2020-09-25 06:39:12,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (1/1) ... [2020-09-25 06:39:12,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (1/1) ... [2020-09-25 06:39:12,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:39:12,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:39:12,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:39:12,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:39:12,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (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 06:39:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:39:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:39:12,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 06:39:12,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:39:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:39:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 06:39:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:39:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 06:39:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 06:39:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:39:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:39:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:39:12,583 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 06:39:13,295 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 06:39:13,296 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 06:39:13,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:39:13,315 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:39:13,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:13 BoogieIcfgContainer [2020-09-25 06:39:13,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:39:13,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:39:13,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:39:13,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:39:13,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:39:11" (1/3) ... [2020-09-25 06:39:13,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf510b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:13, skipping insertion in model container [2020-09-25 06:39:13,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:12" (2/3) ... [2020-09-25 06:39:13,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf510b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:13, skipping insertion in model container [2020-09-25 06:39:13,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:13" (3/3) ... [2020-09-25 06:39:13,337 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-25 06:39:13,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:39:13,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:39:13,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:39:13,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:39:13,425 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:39:13,426 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:39:13,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:39:13,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:39:13,426 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:39:13,426 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:39:13,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:39:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-09-25 06:39:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:39:13,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:13,482 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] [2020-09-25 06:39:13,483 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-09-25 06:39:13,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:13,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714014075] [2020-09-25 06:39:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:14,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:15,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 06:39:15,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-09-25 06:39:15,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:15,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:39:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:39:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:15,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:15,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:15,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:15,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:15,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:15,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:15,463 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 06:39:15,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714014075] [2020-09-25 06:39:15,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:15,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:15,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840219650] [2020-09-25 06:39:15,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:15,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:15,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:15,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:15,504 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 4 states. [2020-09-25 06:39:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:15,911 INFO L93 Difference]: Finished difference Result 787 states and 1025 transitions. [2020-09-25 06:39:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:15,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 06:39:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:15,949 INFO L225 Difference]: With dead ends: 787 [2020-09-25 06:39:15,949 INFO L226 Difference]: Without dead ends: 439 [2020-09-25 06:39:15,957 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 06:39:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-25 06:39:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2020-09-25 06:39:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-25 06:39:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 512 transitions. [2020-09-25 06:39:16,040 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 512 transitions. Word has length 160 [2020-09-25 06:39:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:16,042 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 512 transitions. [2020-09-25 06:39:16,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 512 transitions. [2020-09-25 06:39:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:39:16,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:16,047 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] [2020-09-25 06:39:16,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:39:16,048 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:16,048 INFO L82 PathProgramCache]: Analyzing trace with hash 732761503, now seen corresponding path program 1 times [2020-09-25 06:39:16,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:16,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338463441] [2020-09-25 06:39:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:16,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:16,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:39:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-25 06:39:17,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:17,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:39:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:39:17,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:17,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:17,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:39:17,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:17,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:17,259 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 06:39:17,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338463441] [2020-09-25 06:39:17,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:17,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:17,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509387762] [2020-09-25 06:39:17,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:17,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:17,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:17,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:17,276 INFO L87 Difference]: Start difference. First operand 428 states and 512 transitions. Second operand 4 states. [2020-09-25 06:39:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:17,544 INFO L93 Difference]: Finished difference Result 757 states and 932 transitions. [2020-09-25 06:39:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:17,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-09-25 06:39:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:17,549 INFO L225 Difference]: With dead ends: 757 [2020-09-25 06:39:17,549 INFO L226 Difference]: Without dead ends: 469 [2020-09-25 06:39:17,551 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 06:39:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-09-25 06:39:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 458. [2020-09-25 06:39:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-09-25 06:39:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 547 transitions. [2020-09-25 06:39:17,575 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 547 transitions. Word has length 165 [2020-09-25 06:39:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:17,576 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 547 transitions. [2020-09-25 06:39:17,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 547 transitions. [2020-09-25 06:39:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 06:39:17,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:17,581 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] [2020-09-25 06:39:17,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:39:17,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash -296204506, now seen corresponding path program 1 times [2020-09-25 06:39:17,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:17,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030524090] [2020-09-25 06:39:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:19,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 06:39:19,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:39:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1781 [2020-09-25 06:39:19,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:19,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:39:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:19,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:19,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:19,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:19,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:19,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:19,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:19,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:19,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:19,452 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 06:39:19,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030524090] [2020-09-25 06:39:19,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:19,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:19,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069000514] [2020-09-25 06:39:19,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:19,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:19,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:19,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:19,455 INFO L87 Difference]: Start difference. First operand 458 states and 547 transitions. Second operand 4 states. [2020-09-25 06:39:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:19,738 INFO L93 Difference]: Finished difference Result 819 states and 1002 transitions. [2020-09-25 06:39:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:19,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 06:39:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:19,746 INFO L225 Difference]: With dead ends: 819 [2020-09-25 06:39:19,746 INFO L226 Difference]: Without dead ends: 501 [2020-09-25 06:39:19,747 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 06:39:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-25 06:39:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 490. [2020-09-25 06:39:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-25 06:39:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 586 transitions. [2020-09-25 06:39:19,777 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 586 transitions. Word has length 166 [2020-09-25 06:39:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:19,779 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 586 transitions. [2020-09-25 06:39:19,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 586 transitions. [2020-09-25 06:39:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 06:39:19,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:19,787 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] [2020-09-25 06:39:19,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:39:19,788 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:19,788 INFO L82 PathProgramCache]: Analyzing trace with hash 891632122, now seen corresponding path program 1 times [2020-09-25 06:39:19,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:19,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651209035] [2020-09-25 06:39:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:20,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 06:39:20,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:20,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-25 06:39:20,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:20,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:39:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:20,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:20,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:20,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:39:20,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:20,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:39:20,925 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 06:39:20,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651209035] [2020-09-25 06:39:20,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:20,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:20,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855479185] [2020-09-25 06:39:20,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:20,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:20,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:20,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:20,931 INFO L87 Difference]: Start difference. First operand 490 states and 586 transitions. Second operand 4 states. [2020-09-25 06:39:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:21,202 INFO L93 Difference]: Finished difference Result 874 states and 1074 transitions. [2020-09-25 06:39:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:21,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 06:39:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:21,207 INFO L225 Difference]: With dead ends: 874 [2020-09-25 06:39:21,207 INFO L226 Difference]: Without dead ends: 524 [2020-09-25 06:39:21,208 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 06:39:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-09-25 06:39:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 513. [2020-09-25 06:39:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 06:39:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 614 transitions. [2020-09-25 06:39:21,230 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 614 transitions. Word has length 166 [2020-09-25 06:39:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:21,230 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 614 transitions. [2020-09-25 06:39:21,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 614 transitions. [2020-09-25 06:39:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 06:39:21,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:21,233 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 06:39:21,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:39:21,234 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1047125047, now seen corresponding path program 1 times [2020-09-25 06:39:21,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:21,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740726649] [2020-09-25 06:39:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:22,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:22,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:39:22,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-09-25 06:39:22,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:22,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:39:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:23,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:23,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:23,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:23,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:23,036 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 06:39:23,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740726649] [2020-09-25 06:39:23,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:23,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:23,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135595110] [2020-09-25 06:39:23,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:23,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:23,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:23,040 INFO L87 Difference]: Start difference. First operand 513 states and 614 transitions. Second operand 4 states. [2020-09-25 06:39:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:23,339 INFO L93 Difference]: Finished difference Result 953 states and 1164 transitions. [2020-09-25 06:39:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:23,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 06:39:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:23,347 INFO L225 Difference]: With dead ends: 953 [2020-09-25 06:39:23,348 INFO L226 Difference]: Without dead ends: 580 [2020-09-25 06:39:23,350 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 06:39:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-25 06:39:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 539. [2020-09-25 06:39:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 06:39:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 06:39:23,377 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 167 [2020-09-25 06:39:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:23,378 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 06:39:23,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 06:39:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 06:39:23,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:23,383 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] [2020-09-25 06:39:23,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:39:23,384 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:23,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:23,384 INFO L82 PathProgramCache]: Analyzing trace with hash -849841006, now seen corresponding path program 1 times [2020-09-25 06:39:23,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:23,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312326044] [2020-09-25 06:39:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:23,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:25,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:25,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 06:39:25,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1732 [2020-09-25 06:39:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:25,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:39:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:25,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:25,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:25,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:25,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:25,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:25,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:25,221 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 06:39:25,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312326044] [2020-09-25 06:39:25,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:25,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:25,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958126576] [2020-09-25 06:39:25,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:25,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:25,225 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 4 states. [2020-09-25 06:39:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:25,466 INFO L93 Difference]: Finished difference Result 1005 states and 1226 transitions. [2020-09-25 06:39:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:25,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-09-25 06:39:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:25,472 INFO L225 Difference]: With dead ends: 1005 [2020-09-25 06:39:25,472 INFO L226 Difference]: Without dead ends: 606 [2020-09-25 06:39:25,474 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 06:39:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-09-25 06:39:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 539. [2020-09-25 06:39:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 06:39:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 06:39:25,495 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 168 [2020-09-25 06:39:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:25,496 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 06:39:25,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 06:39:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 06:39:25,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:25,500 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] [2020-09-25 06:39:25,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:39:25,501 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:25,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:25,501 INFO L82 PathProgramCache]: Analyzing trace with hash -466072829, now seen corresponding path program 1 times [2020-09-25 06:39:25,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:25,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421537808] [2020-09-25 06:39:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:26,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:26,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 06:39:26,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-09-25 06:39:26,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:26,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-25 06:39:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:39:26,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:26,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:26,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:26,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:26,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:26,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:39:26,764 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 06:39:26,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421537808] [2020-09-25 06:39:26,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:26,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:26,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406308231] [2020-09-25 06:39:26,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:26,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:26,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:26,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:26,768 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 3 states. [2020-09-25 06:39:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:26,863 INFO L93 Difference]: Finished difference Result 1325 states and 1635 transitions. [2020-09-25 06:39:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:26,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-25 06:39:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:26,872 INFO L225 Difference]: With dead ends: 1325 [2020-09-25 06:39:26,872 INFO L226 Difference]: Without dead ends: 926 [2020-09-25 06:39:26,876 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 06:39:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-09-25 06:39:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 924. [2020-09-25 06:39:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-25 06:39:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1123 transitions. [2020-09-25 06:39:26,906 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1123 transitions. Word has length 169 [2020-09-25 06:39:26,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:26,907 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1123 transitions. [2020-09-25 06:39:26,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:26,907 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1123 transitions. [2020-09-25 06:39:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 06:39:26,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:26,910 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] [2020-09-25 06:39:26,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:39:26,910 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1691967081, now seen corresponding path program 1 times [2020-09-25 06:39:26,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:26,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450931343] [2020-09-25 06:39:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:26,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:28,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:28,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 06:39:28,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:28,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-09-25 06:39:28,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:28,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:39:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:28,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:28,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:28,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:28,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:28,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:28,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:28,669 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 06:39:28,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450931343] [2020-09-25 06:39:28,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:28,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:28,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787202192] [2020-09-25 06:39:28,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:28,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:28,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:28,673 INFO L87 Difference]: Start difference. First operand 924 states and 1123 transitions. Second operand 4 states. [2020-09-25 06:39:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:28,985 INFO L93 Difference]: Finished difference Result 1852 states and 2277 transitions. [2020-09-25 06:39:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:28,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-09-25 06:39:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:28,994 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 06:39:28,994 INFO L226 Difference]: Without dead ends: 1068 [2020-09-25 06:39:28,997 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 06:39:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-09-25 06:39:29,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 884. [2020-09-25 06:39:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 06:39:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1077 transitions. [2020-09-25 06:39:29,037 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1077 transitions. Word has length 170 [2020-09-25 06:39:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:29,038 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1077 transitions. [2020-09-25 06:39:29,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1077 transitions. [2020-09-25 06:39:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 06:39:29,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:29,052 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] [2020-09-25 06:39:29,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:39:29,053 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1669990880, now seen corresponding path program 1 times [2020-09-25 06:39:29,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:29,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436568200] [2020-09-25 06:39:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 06:39:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 06:39:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:29,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:39:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:29,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:29,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:29,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:39:29,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:29,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:29,866 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 06:39:29,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436568200] [2020-09-25 06:39:29,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:29,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:29,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297019170] [2020-09-25 06:39:29,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:29,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:29,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:29,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:29,873 INFO L87 Difference]: Start difference. First operand 884 states and 1077 transitions. Second operand 4 states. [2020-09-25 06:39:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:30,119 INFO L93 Difference]: Finished difference Result 1811 states and 2234 transitions. [2020-09-25 06:39:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:30,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-09-25 06:39:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:30,126 INFO L225 Difference]: With dead ends: 1811 [2020-09-25 06:39:30,127 INFO L226 Difference]: Without dead ends: 1067 [2020-09-25 06:39:30,129 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 06:39:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-09-25 06:39:30,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 899. [2020-09-25 06:39:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-09-25 06:39:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1093 transitions. [2020-09-25 06:39:30,160 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1093 transitions. Word has length 170 [2020-09-25 06:39:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:30,160 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1093 transitions. [2020-09-25 06:39:30,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1093 transitions. [2020-09-25 06:39:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 06:39:30,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:30,163 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] [2020-09-25 06:39:30,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:39:30,164 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:30,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1651741770, now seen corresponding path program 1 times [2020-09-25 06:39:30,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:30,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449403835] [2020-09-25 06:39:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:30,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 06:39:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-09-25 06:39:31,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:31,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:39:31,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:31,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:31,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:31,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:31,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:31,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:31,230 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 06:39:31,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449403835] [2020-09-25 06:39:31,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:31,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:31,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310069000] [2020-09-25 06:39:31,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:31,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:31,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:31,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:31,235 INFO L87 Difference]: Start difference. First operand 899 states and 1093 transitions. Second operand 4 states. [2020-09-25 06:39:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:31,492 INFO L93 Difference]: Finished difference Result 1343 states and 1653 transitions. [2020-09-25 06:39:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:31,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-09-25 06:39:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:31,497 INFO L225 Difference]: With dead ends: 1343 [2020-09-25 06:39:31,497 INFO L226 Difference]: Without dead ends: 954 [2020-09-25 06:39:31,499 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 06:39:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-09-25 06:39:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 940. [2020-09-25 06:39:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-09-25 06:39:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1140 transitions. [2020-09-25 06:39:31,527 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1140 transitions. Word has length 171 [2020-09-25 06:39:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:31,528 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1140 transitions. [2020-09-25 06:39:31,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1140 transitions. [2020-09-25 06:39:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 06:39:31,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:31,531 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] [2020-09-25 06:39:31,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:39:31,532 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:31,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1758330393, now seen corresponding path program 1 times [2020-09-25 06:39:31,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:31,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097501005] [2020-09-25 06:39:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:31,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:33,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 06:39:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-09-25 06:39:33,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:33,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:39:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:33,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:33,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:33,196 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 06:39:33,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097501005] [2020-09-25 06:39:33,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:33,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:33,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244600129] [2020-09-25 06:39:33,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:33,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:33,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:33,199 INFO L87 Difference]: Start difference. First operand 940 states and 1140 transitions. Second operand 4 states. [2020-09-25 06:39:33,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:33,476 INFO L93 Difference]: Finished difference Result 1927 states and 2365 transitions. [2020-09-25 06:39:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:33,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-09-25 06:39:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:33,482 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 06:39:33,482 INFO L226 Difference]: Without dead ends: 1127 [2020-09-25 06:39:33,485 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 06:39:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-09-25 06:39:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 944. [2020-09-25 06:39:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-09-25 06:39:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1146 transitions. [2020-09-25 06:39:33,513 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1146 transitions. Word has length 171 [2020-09-25 06:39:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:33,513 INFO L479 AbstractCegarLoop]: Abstraction has 944 states and 1146 transitions. [2020-09-25 06:39:33,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1146 transitions. [2020-09-25 06:39:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 06:39:33,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:33,517 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 06:39:33,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:39:33,517 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:33,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1256877036, now seen corresponding path program 1 times [2020-09-25 06:39:33,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:33,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606444215] [2020-09-25 06:39:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 06:39:34,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-09-25 06:39:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:34,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:39:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:34,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:34,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:34,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:34,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:34,788 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 06:39:34,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606444215] [2020-09-25 06:39:34,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:34,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:34,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194574944] [2020-09-25 06:39:34,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:34,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:34,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:34,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:34,790 INFO L87 Difference]: Start difference. First operand 944 states and 1146 transitions. Second operand 4 states. [2020-09-25 06:39:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:35,026 INFO L93 Difference]: Finished difference Result 1922 states and 2363 transitions. [2020-09-25 06:39:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:35,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-09-25 06:39:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:35,033 INFO L225 Difference]: With dead ends: 1922 [2020-09-25 06:39:35,033 INFO L226 Difference]: Without dead ends: 1118 [2020-09-25 06:39:35,035 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 06:39:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2020-09-25 06:39:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 925. [2020-09-25 06:39:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-09-25 06:39:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1124 transitions. [2020-09-25 06:39:35,062 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1124 transitions. Word has length 172 [2020-09-25 06:39:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:35,063 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1124 transitions. [2020-09-25 06:39:35,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1124 transitions. [2020-09-25 06:39:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 06:39:35,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:35,066 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 06:39:35,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 06:39:35,067 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:35,067 INFO L82 PathProgramCache]: Analyzing trace with hash -978509581, now seen corresponding path program 1 times [2020-09-25 06:39:35,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:35,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918291091] [2020-09-25 06:39:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:35,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:35,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:37,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 06:39:37,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:39:37,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2077 [2020-09-25 06:39:37,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:37,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:39:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:37,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:37,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:37,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:37,223 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 06:39:37,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918291091] [2020-09-25 06:39:37,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:37,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:37,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826206255] [2020-09-25 06:39:37,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:37,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:37,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:37,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:37,225 INFO L87 Difference]: Start difference. First operand 925 states and 1124 transitions. Second operand 4 states. [2020-09-25 06:39:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:37,465 INFO L93 Difference]: Finished difference Result 1911 states and 2349 transitions. [2020-09-25 06:39:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:37,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 06:39:37,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:37,471 INFO L225 Difference]: With dead ends: 1911 [2020-09-25 06:39:37,471 INFO L226 Difference]: Without dead ends: 1126 [2020-09-25 06:39:37,473 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 06:39:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-09-25 06:39:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 952. [2020-09-25 06:39:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 06:39:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1154 transitions. [2020-09-25 06:39:37,502 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1154 transitions. Word has length 173 [2020-09-25 06:39:37,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:37,503 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1154 transitions. [2020-09-25 06:39:37,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1154 transitions. [2020-09-25 06:39:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 06:39:37,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:37,506 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 06:39:37,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 06:39:37,506 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:37,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:37,507 INFO L82 PathProgramCache]: Analyzing trace with hash 310644027, now seen corresponding path program 1 times [2020-09-25 06:39:37,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:37,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535121576] [2020-09-25 06:39:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:39,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:39,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 06:39:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:39:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-09-25 06:39:39,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:39,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:39:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:40,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:40,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:40,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:40,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:40,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535121576] [2020-09-25 06:39:40,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:40,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:40,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217574382] [2020-09-25 06:39:40,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:40,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:40,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:40,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:40,046 INFO L87 Difference]: Start difference. First operand 952 states and 1154 transitions. Second operand 4 states. [2020-09-25 06:39:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:40,358 INFO L93 Difference]: Finished difference Result 1900 states and 2333 transitions. [2020-09-25 06:39:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:40,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 06:39:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:40,365 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 06:39:40,366 INFO L226 Difference]: Without dead ends: 1088 [2020-09-25 06:39:40,370 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 06:39:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-09-25 06:39:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 952. [2020-09-25 06:39:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 06:39:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1154 transitions. [2020-09-25 06:39:40,401 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1154 transitions. Word has length 173 [2020-09-25 06:39:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:40,402 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1154 transitions. [2020-09-25 06:39:40,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1154 transitions. [2020-09-25 06:39:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 06:39:40,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:40,404 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 06:39:40,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 06:39:40,405 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:40,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:40,405 INFO L82 PathProgramCache]: Analyzing trace with hash -33516338, now seen corresponding path program 1 times [2020-09-25 06:39:40,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:40,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36221816] [2020-09-25 06:39:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:40,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 06:39:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:39:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-09-25 06:39:41,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:41,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 06:39:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:39:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:41,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:41,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:41,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:41,960 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 06:39:41,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36221816] [2020-09-25 06:39:41,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:41,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:41,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448382794] [2020-09-25 06:39:41,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:41,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:41,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:41,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:41,962 INFO L87 Difference]: Start difference. First operand 952 states and 1154 transitions. Second operand 4 states. [2020-09-25 06:39:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:42,220 INFO L93 Difference]: Finished difference Result 1940 states and 2381 transitions. [2020-09-25 06:39:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:42,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-09-25 06:39:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:42,226 INFO L225 Difference]: With dead ends: 1940 [2020-09-25 06:39:42,226 INFO L226 Difference]: Without dead ends: 1128 [2020-09-25 06:39:42,228 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 06:39:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-09-25 06:39:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 925. [2020-09-25 06:39:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-09-25 06:39:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1124 transitions. [2020-09-25 06:39:42,255 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1124 transitions. Word has length 174 [2020-09-25 06:39:42,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:42,256 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1124 transitions. [2020-09-25 06:39:42,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1124 transitions. [2020-09-25 06:39:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 06:39:42,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:42,271 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, 1] [2020-09-25 06:39:42,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 06:39:42,272 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:42,272 INFO L82 PathProgramCache]: Analyzing trace with hash -99229899, now seen corresponding path program 1 times [2020-09-25 06:39:42,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:42,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561427749] [2020-09-25 06:39:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:46,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 06:39:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:39:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3946 [2020-09-25 06:39:46,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:46,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 06:39:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:39:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:46,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:46,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:46,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:46,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:46,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:46,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:46,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:46,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:46,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:46,451 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 06:39:46,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561427749] [2020-09-25 06:39:46,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:46,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:46,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910599207] [2020-09-25 06:39:46,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:46,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:46,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:46,454 INFO L87 Difference]: Start difference. First operand 925 states and 1124 transitions. Second operand 3 states. [2020-09-25 06:39:46,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:46,508 INFO L93 Difference]: Finished difference Result 2443 states and 3016 transitions. [2020-09-25 06:39:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:46,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-25 06:39:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:46,516 INFO L225 Difference]: With dead ends: 2443 [2020-09-25 06:39:46,516 INFO L226 Difference]: Without dead ends: 1658 [2020-09-25 06:39:46,519 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 06:39:46,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-09-25 06:39:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 960. [2020-09-25 06:39:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-25 06:39:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1172 transitions. [2020-09-25 06:39:46,553 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1172 transitions. Word has length 180 [2020-09-25 06:39:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:46,554 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1172 transitions. [2020-09-25 06:39:46,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1172 transitions. [2020-09-25 06:39:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 06:39:46,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:46,556 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, 1, 1, 1] [2020-09-25 06:39:46,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 06:39:46,557 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:46,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1893768638, now seen corresponding path program 1 times [2020-09-25 06:39:46,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:46,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974797496] [2020-09-25 06:39:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:46,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 06:39:46,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 06:39:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:46,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:39:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:39:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 06:39:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:47,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:47,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:47,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:47,077 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 06:39:47,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974797496] [2020-09-25 06:39:47,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:47,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:39:47,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053708075] [2020-09-25 06:39:47,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:39:47,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:47,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:39:47,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:39:47,080 INFO L87 Difference]: Start difference. First operand 960 states and 1172 transitions. Second operand 7 states. [2020-09-25 06:39:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:47,332 INFO L93 Difference]: Finished difference Result 1477 states and 1831 transitions. [2020-09-25 06:39:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:39:47,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 06:39:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:47,336 INFO L225 Difference]: With dead ends: 1477 [2020-09-25 06:39:47,336 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 06:39:47,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:39:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 06:39:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 636. [2020-09-25 06:39:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-09-25 06:39:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 762 transitions. [2020-09-25 06:39:47,359 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 762 transitions. Word has length 182 [2020-09-25 06:39:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:47,360 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 762 transitions. [2020-09-25 06:39:47,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:39:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 762 transitions. [2020-09-25 06:39:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 06:39:47,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:47,362 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] [2020-09-25 06:39:47,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 06:39:47,363 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:47,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:47,363 INFO L82 PathProgramCache]: Analyzing trace with hash -460420793, now seen corresponding path program 1 times [2020-09-25 06:39:47,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:47,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070888025] [2020-09-25 06:39:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 06:39:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-25 06:39:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:47,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 06:39:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:39:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:47,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:47,818 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 06:39:47,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070888025] [2020-09-25 06:39:47,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:47,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:47,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653228577] [2020-09-25 06:39:47,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:47,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:47,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:47,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:47,824 INFO L87 Difference]: Start difference. First operand 636 states and 762 transitions. Second operand 3 states. [2020-09-25 06:39:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:47,919 INFO L93 Difference]: Finished difference Result 1585 states and 1955 transitions. [2020-09-25 06:39:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:47,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-09-25 06:39:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:47,924 INFO L225 Difference]: With dead ends: 1585 [2020-09-25 06:39:47,924 INFO L226 Difference]: Without dead ends: 1105 [2020-09-25 06:39:47,927 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 06:39:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-09-25 06:39:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-09-25 06:39:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 06:39:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1343 transitions. [2020-09-25 06:39:47,965 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1343 transitions. Word has length 196 [2020-09-25 06:39:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:47,965 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1343 transitions. [2020-09-25 06:39:47,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1343 transitions. [2020-09-25 06:39:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 06:39:47,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:47,968 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] [2020-09-25 06:39:47,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 06:39:47,968 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:47,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:47,969 INFO L82 PathProgramCache]: Analyzing trace with hash -248337803, now seen corresponding path program 1 times [2020-09-25 06:39:47,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:47,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049065804] [2020-09-25 06:39:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:48,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 06:39:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 06:39:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:48,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 06:39:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:39:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:48,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:48,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:48,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:48,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:48,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049065804] [2020-09-25 06:39:48,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:48,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 06:39:48,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365827903] [2020-09-25 06:39:48,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:48,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:48,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:48,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:48,375 INFO L87 Difference]: Start difference. First operand 1103 states and 1343 transitions. Second operand 4 states. [2020-09-25 06:39:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:48,713 INFO L93 Difference]: Finished difference Result 2577 states and 3229 transitions. [2020-09-25 06:39:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:48,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-09-25 06:39:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:48,720 INFO L225 Difference]: With dead ends: 2577 [2020-09-25 06:39:48,721 INFO L226 Difference]: Without dead ends: 1598 [2020-09-25 06:39:48,725 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 06:39:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-09-25 06:39:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1258. [2020-09-25 06:39:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 06:39:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1542 transitions. [2020-09-25 06:39:48,790 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1542 transitions. Word has length 208 [2020-09-25 06:39:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:48,791 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1542 transitions. [2020-09-25 06:39:48,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1542 transitions. [2020-09-25 06:39:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 06:39:48,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:48,795 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, 1, 1, 1] [2020-09-25 06:39:48,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 06:39:48,795 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:48,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1941211029, now seen corresponding path program 1 times [2020-09-25 06:39:48,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:48,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607210511] [2020-09-25 06:39:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 06:39:49,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 06:39:49,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 06:39:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:39:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:49,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:49,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:49,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:49,548 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 06:39:49,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607210511] [2020-09-25 06:39:49,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:49,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:39:49,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400162143] [2020-09-25 06:39:49,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:39:49,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:49,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:39:49,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:49,550 INFO L87 Difference]: Start difference. First operand 1258 states and 1542 transitions. Second operand 5 states. [2020-09-25 06:39:49,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:49,998 INFO L93 Difference]: Finished difference Result 3867 states and 4845 transitions. [2020-09-25 06:39:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:39:49,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-09-25 06:39:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:50,009 INFO L225 Difference]: With dead ends: 3867 [2020-09-25 06:39:50,010 INFO L226 Difference]: Without dead ends: 2665 [2020-09-25 06:39:50,013 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 06:39:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2020-09-25 06:39:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1296. [2020-09-25 06:39:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-25 06:39:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1592 transitions. [2020-09-25 06:39:50,063 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1592 transitions. Word has length 216 [2020-09-25 06:39:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:50,063 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1592 transitions. [2020-09-25 06:39:50,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:39:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1592 transitions. [2020-09-25 06:39:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 06:39:50,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:50,067 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] [2020-09-25 06:39:50,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 06:39:50,067 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1995787975, now seen corresponding path program 1 times [2020-09-25 06:39:50,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:50,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438552586] [2020-09-25 06:39:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:50,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 06:39:50,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 06:39:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:50,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 06:39:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:39:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:39:50,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:50,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:50,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:50,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:50,424 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 06:39:50,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438552586] [2020-09-25 06:39:50,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:50,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:50,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312697783] [2020-09-25 06:39:50,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:50,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:50,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:50,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:50,427 INFO L87 Difference]: Start difference. First operand 1296 states and 1592 transitions. Second operand 3 states. [2020-09-25 06:39:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:50,535 INFO L93 Difference]: Finished difference Result 3001 states and 3739 transitions. [2020-09-25 06:39:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:50,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-25 06:39:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:50,544 INFO L225 Difference]: With dead ends: 3001 [2020-09-25 06:39:50,544 INFO L226 Difference]: Without dead ends: 1861 [2020-09-25 06:39:50,551 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 06:39:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-09-25 06:39:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1859. [2020-09-25 06:39:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1859 states. [2020-09-25 06:39:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2299 transitions. [2020-09-25 06:39:50,615 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2299 transitions. Word has length 224 [2020-09-25 06:39:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:50,616 INFO L479 AbstractCegarLoop]: Abstraction has 1859 states and 2299 transitions. [2020-09-25 06:39:50,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2299 transitions. [2020-09-25 06:39:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 06:39:50,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:50,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:50,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 06:39:50,621 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash 309373079, now seen corresponding path program 1 times [2020-09-25 06:39:50,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:50,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967963946] [2020-09-25 06:39:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 06:39:51,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:51,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-09-25 06:39:51,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 06:39:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:39:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:51,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:51,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:51,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:39:51,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967963946] [2020-09-25 06:39:51,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:51,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 06:39:51,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037151073] [2020-09-25 06:39:51,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:51,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:51,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:51,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:51,354 INFO L87 Difference]: Start difference. First operand 1859 states and 2299 transitions. Second operand 4 states. [2020-09-25 06:39:51,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:51,687 INFO L93 Difference]: Finished difference Result 4364 states and 5491 transitions. [2020-09-25 06:39:51,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:51,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-09-25 06:39:51,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:51,699 INFO L225 Difference]: With dead ends: 4364 [2020-09-25 06:39:51,700 INFO L226 Difference]: Without dead ends: 2505 [2020-09-25 06:39:51,704 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 06:39:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2020-09-25 06:39:51,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2175. [2020-09-25 06:39:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2020-09-25 06:39:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2685 transitions. [2020-09-25 06:39:51,780 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2685 transitions. Word has length 235 [2020-09-25 06:39:51,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:51,780 INFO L479 AbstractCegarLoop]: Abstraction has 2175 states and 2685 transitions. [2020-09-25 06:39:51,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2685 transitions. [2020-09-25 06:39:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 06:39:51,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:51,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:51,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 06:39:51,786 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1135250487, now seen corresponding path program 1 times [2020-09-25 06:39:51,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:51,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148160837] [2020-09-25 06:39:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:52,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:52,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 06:39:52,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-25 06:39:52,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:52,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 06:39:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:39:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:52,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:52,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:52,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:52,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:52,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:52,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:39:52,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148160837] [2020-09-25 06:39:52,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:52,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 06:39:52,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617437551] [2020-09-25 06:39:52,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:52,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:52,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:52,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:52,626 INFO L87 Difference]: Start difference. First operand 2175 states and 2685 transitions. Second operand 4 states. [2020-09-25 06:39:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:52,915 INFO L93 Difference]: Finished difference Result 4568 states and 5708 transitions. [2020-09-25 06:39:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:52,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-09-25 06:39:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:52,927 INFO L225 Difference]: With dead ends: 4568 [2020-09-25 06:39:52,927 INFO L226 Difference]: Without dead ends: 2453 [2020-09-25 06:39:52,932 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 06:39:52,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2020-09-25 06:39:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2313. [2020-09-25 06:39:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2313 states. [2020-09-25 06:39:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 2846 transitions. [2020-09-25 06:39:53,067 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 2846 transitions. Word has length 235 [2020-09-25 06:39:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:53,067 INFO L479 AbstractCegarLoop]: Abstraction has 2313 states and 2846 transitions. [2020-09-25 06:39:53,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 2846 transitions. [2020-09-25 06:39:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 06:39:53,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:53,076 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, 1, 1] [2020-09-25 06:39:53,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 06:39:53,076 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:53,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1624554569, now seen corresponding path program 1 times [2020-09-25 06:39:53,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:53,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810235507] [2020-09-25 06:39:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 06:39:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1114 [2020-09-25 06:39:54,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:54,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 06:39:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:39:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:54,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:54,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:54,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:54,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:54,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:54,298 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 06:39:54,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810235507] [2020-09-25 06:39:54,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:54,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:54,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898646768] [2020-09-25 06:39:54,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:54,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:54,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:54,301 INFO L87 Difference]: Start difference. First operand 2313 states and 2846 transitions. Second operand 3 states. [2020-09-25 06:39:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:54,382 INFO L93 Difference]: Finished difference Result 3812 states and 4712 transitions. [2020-09-25 06:39:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:54,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2020-09-25 06:39:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:54,389 INFO L225 Difference]: With dead ends: 3812 [2020-09-25 06:39:54,389 INFO L226 Difference]: Without dead ends: 1655 [2020-09-25 06:39:54,393 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 06:39:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-09-25 06:39:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1655. [2020-09-25 06:39:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-09-25 06:39:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2025 transitions. [2020-09-25 06:39:54,443 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2025 transitions. Word has length 243 [2020-09-25 06:39:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:54,443 INFO L479 AbstractCegarLoop]: Abstraction has 1655 states and 2025 transitions. [2020-09-25 06:39:54,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2025 transitions. [2020-09-25 06:39:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 06:39:54,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:54,447 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, 1, 1, 1] [2020-09-25 06:39:54,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 06:39:54,448 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash -662598379, now seen corresponding path program 1 times [2020-09-25 06:39:54,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:54,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627388319] [2020-09-25 06:39:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:54,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 06:39:54,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:54,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-25 06:39:54,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:54,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 06:39:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:39:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:54,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:54,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:54,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:54,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:55,045 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 06:39:55,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627388319] [2020-09-25 06:39:55,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:55,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:39:55,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813066674] [2020-09-25 06:39:55,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:39:55,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:55,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:39:55,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:55,048 INFO L87 Difference]: Start difference. First operand 1655 states and 2025 transitions. Second operand 5 states. [2020-09-25 06:39:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:55,595 INFO L93 Difference]: Finished difference Result 5101 states and 6337 transitions. [2020-09-25 06:39:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:39:55,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-09-25 06:39:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:55,612 INFO L225 Difference]: With dead ends: 5101 [2020-09-25 06:39:55,612 INFO L226 Difference]: Without dead ends: 3602 [2020-09-25 06:39:55,616 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 06:39:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2020-09-25 06:39:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 1810. [2020-09-25 06:39:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1810 states. [2020-09-25 06:39:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2204 transitions. [2020-09-25 06:39:55,677 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2204 transitions. Word has length 244 [2020-09-25 06:39:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:55,682 INFO L479 AbstractCegarLoop]: Abstraction has 1810 states and 2204 transitions. [2020-09-25 06:39:55,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:39:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2204 transitions. [2020-09-25 06:39:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 06:39:55,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:55,686 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, 1, 1, 1] [2020-09-25 06:39:55,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-25 06:39:55,686 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:55,686 INFO L82 PathProgramCache]: Analyzing trace with hash 435015861, now seen corresponding path program 1 times [2020-09-25 06:39:55,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:55,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203027856] [2020-09-25 06:39:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking...