/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:13:07,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:13:07,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:13:07,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:13:07,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:13:07,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:13:07,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:13:07,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:13:07,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:13:07,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:13:07,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:13:07,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:13:07,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:13:07,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:13:07,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:13:07,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:13:07,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:13:07,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:13:07,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:13:07,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:13:07,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:13:07,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:13:07,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:13:07,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:13:07,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:13:07,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:13:07,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:13:07,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:13:07,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:13:07,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:13:07,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:13:07,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:13:07,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:13:07,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:13:07,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:13:07,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:13:07,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:13:07,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:13:07,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:13:07,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:13:07,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:13:07,598 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 03:13:07,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:13:07,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:13:07,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:13:07,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:13:07,628 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:13:07,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:13:07,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:13:07,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:13:07,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:13:07,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:13:07,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:13:07,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:13:07,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:13:07,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:13:07,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:13:07,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:13:07,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:13:07,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:13:07,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:13:07,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:13:07,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:13:07,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:07,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:13:07,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:13:07,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:13:07,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:13:07,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:13:07,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:13:07,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:13:07,634 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:13:08,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:13:08,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:13:08,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:13:08,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:13:08,092 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:13:08,093 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 03:13:08,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76736f5fe/eb0b902355c94edbac3a5ff3203a787b/FLAG3d38a632c [2020-09-25 03:13:08,660 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:13:08,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 03:13:08,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76736f5fe/eb0b902355c94edbac3a5ff3203a787b/FLAG3d38a632c [2020-09-25 03:13:08,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76736f5fe/eb0b902355c94edbac3a5ff3203a787b [2020-09-25 03:13:08,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:13:08,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:13:08,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:08,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:13:08,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:13:08,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:08" (1/1) ... [2020-09-25 03:13:09,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bb1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:08, skipping insertion in model container [2020-09-25 03:13:09,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:08" (1/1) ... [2020-09-25 03:13:09,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:13:09,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:13:09,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:09,449 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:13:09,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:09,665 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:13:09,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09 WrapperNode [2020-09-25 03:13:09,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:09,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:13:09,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:13:09,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:13:09,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (1/1) ... [2020-09-25 03:13:09,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (1/1) ... [2020-09-25 03:13:09,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (1/1) ... [2020-09-25 03:13:09,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (1/1) ... [2020-09-25 03:13:09,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (1/1) ... [2020-09-25 03:13:09,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (1/1) ... [2020-09-25 03:13:09,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (1/1) ... [2020-09-25 03:13:09,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:13:09,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:13:09,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:13:09,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:13:09,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (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 03:13:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:13:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:13:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 03:13:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:13:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:13:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 03:13:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:13:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 03:13:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 03:13:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 03:13:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:13:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:13:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:13:10,090 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 03:13:10,804 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 03:13:10,804 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 03:13:10,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:13:10,822 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:13:10,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:10 BoogieIcfgContainer [2020-09-25 03:13:10,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:13:10,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:13:10,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:13:10,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:13:10,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:08" (1/3) ... [2020-09-25 03:13:10,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b13482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:10, skipping insertion in model container [2020-09-25 03:13:10,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:09" (2/3) ... [2020-09-25 03:13:10,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b13482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:10, skipping insertion in model container [2020-09-25 03:13:10,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:10" (3/3) ... [2020-09-25 03:13:10,840 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 03:13:10,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:13:10,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:13:10,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:13:10,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:13:10,928 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:13:10,928 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:13:10,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:13:10,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:13:10,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:13:10,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:13:10,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:13:10,959 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 03:13:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 03:13:10,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:10,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:10,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:10,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:10,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 03:13:10,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:10,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707651946] [2020-09-25 03:13:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:12,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:12,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 03:13:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-09-25 03:13:12,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:13:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:13:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 03:13:12,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:13:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:12,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:12,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:12,891 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 03:13:12,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707651946] [2020-09-25 03:13:12,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:12,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:12,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393816850] [2020-09-25 03:13:12,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:12,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:12,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:12,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:12,920 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 7 states. [2020-09-25 03:13:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:13,686 INFO L93 Difference]: Finished difference Result 1173 states and 1551 transitions. [2020-09-25 03:13:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:13:13,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-09-25 03:13:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:13,732 INFO L225 Difference]: With dead ends: 1173 [2020-09-25 03:13:13,733 INFO L226 Difference]: Without dead ends: 767 [2020-09-25 03:13:13,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:13:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-09-25 03:13:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 738. [2020-09-25 03:13:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 03:13:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 920 transitions. [2020-09-25 03:13:13,893 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 920 transitions. Word has length 161 [2020-09-25 03:13:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:13,894 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 920 transitions. [2020-09-25 03:13:13,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 920 transitions. [2020-09-25 03:13:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 03:13:13,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:13,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:13,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:13:13,902 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:13,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1172377495, now seen corresponding path program 1 times [2020-09-25 03:13:13,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:13,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447865925] [2020-09-25 03:13:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:13,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:14,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:14,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 03:13:14,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:14,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-09-25 03:13:14,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:13:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 03:13:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:14,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:14,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:14,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:14,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:14,653 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 03:13:14,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447865925] [2020-09-25 03:13:14,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:14,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:13:14,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875813503] [2020-09-25 03:13:14,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:13:14,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:13:14,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:13:14,669 INFO L87 Difference]: Start difference. First operand 738 states and 920 transitions. Second operand 6 states. [2020-09-25 03:13:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:15,006 INFO L93 Difference]: Finished difference Result 1483 states and 1931 transitions. [2020-09-25 03:13:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:13:15,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-09-25 03:13:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:15,012 INFO L225 Difference]: With dead ends: 1483 [2020-09-25 03:13:15,013 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 03:13:15,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:13:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 03:13:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 848. [2020-09-25 03:13:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-25 03:13:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1105 transitions. [2020-09-25 03:13:15,047 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1105 transitions. Word has length 176 [2020-09-25 03:13:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:15,048 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1105 transitions. [2020-09-25 03:13:15,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:13:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1105 transitions. [2020-09-25 03:13:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 03:13:15,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:15,052 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:15,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:13:15,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:15,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1596716702, now seen corresponding path program 1 times [2020-09-25 03:13:15,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:15,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173915465] [2020-09-25 03:13:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:15,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:15,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 03:13:15,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-09-25 03:13:15,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:13:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 03:13:15,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:15,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:15,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:15,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:15,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:15,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:15,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:15,718 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 03:13:15,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173915465] [2020-09-25 03:13:15,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:15,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:13:15,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200846404] [2020-09-25 03:13:15,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:13:15,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:15,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:13:15,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:13:15,722 INFO L87 Difference]: Start difference. First operand 848 states and 1105 transitions. Second operand 6 states. [2020-09-25 03:13:16,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:16,110 INFO L93 Difference]: Finished difference Result 1628 states and 2180 transitions. [2020-09-25 03:13:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:13:16,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-09-25 03:13:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:16,117 INFO L225 Difference]: With dead ends: 1628 [2020-09-25 03:13:16,117 INFO L226 Difference]: Without dead ends: 919 [2020-09-25 03:13:16,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:13:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-09-25 03:13:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 883. [2020-09-25 03:13:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-09-25 03:13:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1169 transitions. [2020-09-25 03:13:16,187 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1169 transitions. Word has length 177 [2020-09-25 03:13:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:16,188 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1169 transitions. [2020-09-25 03:13:16,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:13:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1169 transitions. [2020-09-25 03:13:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 03:13:16,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:16,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:16,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:13:16,192 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:16,193 INFO L82 PathProgramCache]: Analyzing trace with hash 318370268, now seen corresponding path program 1 times [2020-09-25 03:13:16,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:16,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922723627] [2020-09-25 03:13:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:20,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:20,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 03:13:20,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:13:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4506 [2020-09-25 03:13:20,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:13:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 03:13:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:20,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:20,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:20,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:20,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:13:20,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922723627] [2020-09-25 03:13:20,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:20,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:13:20,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29315076] [2020-09-25 03:13:20,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:13:20,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:20,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:13:20,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:13:20,901 INFO L87 Difference]: Start difference. First operand 883 states and 1169 transitions. Second operand 6 states. [2020-09-25 03:13:21,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:21,148 INFO L93 Difference]: Finished difference Result 1629 states and 2197 transitions. [2020-09-25 03:13:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:13:21,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2020-09-25 03:13:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:21,154 INFO L225 Difference]: With dead ends: 1629 [2020-09-25 03:13:21,154 INFO L226 Difference]: Without dead ends: 885 [2020-09-25 03:13:21,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:13:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-09-25 03:13:21,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2020-09-25 03:13:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-09-25 03:13:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1166 transitions. [2020-09-25 03:13:21,185 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1166 transitions. Word has length 185 [2020-09-25 03:13:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:21,186 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1166 transitions. [2020-09-25 03:13:21,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:13:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1166 transitions. [2020-09-25 03:13:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 03:13:21,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:21,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:21,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:13:21,190 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash -821938285, now seen corresponding path program 1 times [2020-09-25 03:13:21,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:21,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771058036] [2020-09-25 03:13:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:23,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 03:13:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2608 [2020-09-25 03:13:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:13:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 03:13:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:23,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:23,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:23,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:23,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:13:23,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771058036] [2020-09-25 03:13:23,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:23,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:13:23,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928998794] [2020-09-25 03:13:23,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:13:23,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:23,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:13:23,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:13:23,986 INFO L87 Difference]: Start difference. First operand 883 states and 1166 transitions. Second operand 6 states. [2020-09-25 03:13:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:24,351 INFO L93 Difference]: Finished difference Result 1742 states and 2349 transitions. [2020-09-25 03:13:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:13:24,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-25 03:13:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:24,357 INFO L225 Difference]: With dead ends: 1742 [2020-09-25 03:13:24,357 INFO L226 Difference]: Without dead ends: 986 [2020-09-25 03:13:24,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:13:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-09-25 03:13:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 960. [2020-09-25 03:13:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-25 03:13:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1259 transitions. [2020-09-25 03:13:24,391 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1259 transitions. Word has length 190 [2020-09-25 03:13:24,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:24,391 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1259 transitions. [2020-09-25 03:13:24,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:13:24,391 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1259 transitions. [2020-09-25 03:13:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 03:13:24,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:24,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:24,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:13:24,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:24,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:24,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1734841447, now seen corresponding path program 1 times [2020-09-25 03:13:24,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:24,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271078314] [2020-09-25 03:13:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:24,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:25,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:25,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 03:13:25,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-25 03:13:25,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:25,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:25,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:13:25,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 03:13:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:25,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:25,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:25,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:25,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:25,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:13:25,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271078314] [2020-09-25 03:13:25,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:25,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:13:25,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951087223] [2020-09-25 03:13:25,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:13:25,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:25,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:13:25,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:13:25,550 INFO L87 Difference]: Start difference. First operand 960 states and 1259 transitions. Second operand 6 states. [2020-09-25 03:13:25,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:25,892 INFO L93 Difference]: Finished difference Result 1833 states and 2441 transitions. [2020-09-25 03:13:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:13:25,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2020-09-25 03:13:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:25,899 INFO L225 Difference]: With dead ends: 1833 [2020-09-25 03:13:25,900 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 03:13:25,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:13:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 03:13:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 992. [2020-09-25 03:13:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-09-25 03:13:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1299 transitions. [2020-09-25 03:13:25,953 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1299 transitions. Word has length 192 [2020-09-25 03:13:25,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:25,954 INFO L479 AbstractCegarLoop]: Abstraction has 992 states and 1299 transitions. [2020-09-25 03:13:25,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:13:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1299 transitions. [2020-09-25 03:13:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 03:13:25,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:25,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:25,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:13:25,961 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash -447036105, now seen corresponding path program 1 times [2020-09-25 03:13:25,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:25,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220123432] [2020-09-25 03:13:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:27,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:27,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 03:13:27,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-09-25 03:13:27,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-25 03:13:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:13:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:27,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:27,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:27,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:27,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:27,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220123432] [2020-09-25 03:13:27,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:27,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:13:27,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228900953] [2020-09-25 03:13:27,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:13:27,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:13:27,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:27,610 INFO L87 Difference]: Start difference. First operand 992 states and 1299 transitions. Second operand 5 states. [2020-09-25 03:13:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:28,329 INFO L93 Difference]: Finished difference Result 3171 states and 4208 transitions. [2020-09-25 03:13:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:13:28,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-09-25 03:13:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:28,345 INFO L225 Difference]: With dead ends: 3171 [2020-09-25 03:13:28,345 INFO L226 Difference]: Without dead ends: 2318 [2020-09-25 03:13:28,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-09-25 03:13:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 996. [2020-09-25 03:13:28,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-09-25 03:13:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1304 transitions. [2020-09-25 03:13:28,407 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1304 transitions. Word has length 194 [2020-09-25 03:13:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:28,408 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1304 transitions. [2020-09-25 03:13:28,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:13:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1304 transitions. [2020-09-25 03:13:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 03:13:28,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:28,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:28,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:13:28,412 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:28,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1615344474, now seen corresponding path program 1 times [2020-09-25 03:13:28,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:28,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162928070] [2020-09-25 03:13:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:28,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:28,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:29,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 03:13:29,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 03:13:29,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 03:13:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 03:13:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:29,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:29,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:29,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:29,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:13:29,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162928070] [2020-09-25 03:13:29,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:29,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:29,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375225298] [2020-09-25 03:13:29,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:29,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:29,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:29,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:29,089 INFO L87 Difference]: Start difference. First operand 996 states and 1304 transitions. Second operand 3 states. [2020-09-25 03:13:29,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:29,293 INFO L93 Difference]: Finished difference Result 2668 states and 3584 transitions. [2020-09-25 03:13:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:29,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-09-25 03:13:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:29,302 INFO L225 Difference]: With dead ends: 2668 [2020-09-25 03:13:29,302 INFO L226 Difference]: Without dead ends: 1811 [2020-09-25 03:13:29,304 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 03:13:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2020-09-25 03:13:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1809. [2020-09-25 03:13:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2020-09-25 03:13:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2379 transitions. [2020-09-25 03:13:29,371 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2379 transitions. Word has length 209 [2020-09-25 03:13:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:29,372 INFO L479 AbstractCegarLoop]: Abstraction has 1809 states and 2379 transitions. [2020-09-25 03:13:29,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2379 transitions. [2020-09-25 03:13:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 03:13:29,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:29,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:29,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:13:29,399 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:29,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1597515948, now seen corresponding path program 1 times [2020-09-25 03:13:29,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:29,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771579488] [2020-09-25 03:13:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:29,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:29,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 03:13:29,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 03:13:29,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 03:13:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:13:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:29,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:29,969 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 03:13:29,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771579488] [2020-09-25 03:13:29,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:29,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:29,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349559314] [2020-09-25 03:13:29,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:29,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:29,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:29,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:29,972 INFO L87 Difference]: Start difference. First operand 1809 states and 2379 transitions. Second operand 3 states. [2020-09-25 03:13:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:30,173 INFO L93 Difference]: Finished difference Result 3481 states and 4659 transitions. [2020-09-25 03:13:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:30,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-09-25 03:13:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:30,190 INFO L225 Difference]: With dead ends: 3481 [2020-09-25 03:13:30,190 INFO L226 Difference]: Without dead ends: 2624 [2020-09-25 03:13:30,192 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 03:13:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-09-25 03:13:30,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2622. [2020-09-25 03:13:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-09-25 03:13:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3456 transitions. [2020-09-25 03:13:30,304 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3456 transitions. Word has length 210 [2020-09-25 03:13:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:30,305 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3456 transitions. [2020-09-25 03:13:30,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3456 transitions. [2020-09-25 03:13:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 03:13:30,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:30,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:30,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:13:30,313 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:30,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1523525832, now seen corresponding path program 1 times [2020-09-25 03:13:30,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:30,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340375863] [2020-09-25 03:13:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 03:13:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-09-25 03:13:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 03:13:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:13:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:31,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:31,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:31,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:31,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 03:13:31,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340375863] [2020-09-25 03:13:31,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:31,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:31,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150029573] [2020-09-25 03:13:31,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:31,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:31,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:31,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:31,572 INFO L87 Difference]: Start difference. First operand 2622 states and 3456 transitions. Second operand 3 states. [2020-09-25 03:13:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:31,709 INFO L93 Difference]: Finished difference Result 4308 states and 5711 transitions. [2020-09-25 03:13:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:31,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-25 03:13:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:31,718 INFO L225 Difference]: With dead ends: 4308 [2020-09-25 03:13:31,718 INFO L226 Difference]: Without dead ends: 1825 [2020-09-25 03:13:31,725 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 03:13:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2020-09-25 03:13:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1825. [2020-09-25 03:13:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2020-09-25 03:13:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2397 transitions. [2020-09-25 03:13:31,791 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2397 transitions. Word has length 217 [2020-09-25 03:13:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:31,792 INFO L479 AbstractCegarLoop]: Abstraction has 1825 states and 2397 transitions. [2020-09-25 03:13:31,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2397 transitions. [2020-09-25 03:13:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 03:13:31,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:31,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:31,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:13:31,797 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1095195274, now seen corresponding path program 1 times [2020-09-25 03:13:31,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:31,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045467890] [2020-09-25 03:13:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 03:13:32,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-09-25 03:13:32,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 03:13:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:13:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:32,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:32,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:13:32,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045467890] [2020-09-25 03:13:32,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:32,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:32,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156911489] [2020-09-25 03:13:32,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:32,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:32,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:32,460 INFO L87 Difference]: Start difference. First operand 1825 states and 2397 transitions. Second operand 3 states. [2020-09-25 03:13:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:32,725 INFO L93 Difference]: Finished difference Result 3635 states and 4856 transitions. [2020-09-25 03:13:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:32,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-09-25 03:13:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:32,734 INFO L225 Difference]: With dead ends: 3635 [2020-09-25 03:13:32,734 INFO L226 Difference]: Without dead ends: 1965 [2020-09-25 03:13:32,738 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 03:13:32,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-25 03:13:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1915. [2020-09-25 03:13:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-09-25 03:13:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2491 transitions. [2020-09-25 03:13:32,798 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2491 transitions. Word has length 218 [2020-09-25 03:13:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:32,799 INFO L479 AbstractCegarLoop]: Abstraction has 1915 states and 2491 transitions. [2020-09-25 03:13:32,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2491 transitions. [2020-09-25 03:13:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 03:13:32,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:32,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:32,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:13:32,808 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash 709606687, now seen corresponding path program 1 times [2020-09-25 03:13:32,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:32,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073149345] [2020-09-25 03:13:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:35,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 03:13:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:13:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2549 [2020-09-25 03:13:35,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 03:13:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:13:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:35,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:35,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:13:35,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 03:13:35,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073149345] [2020-09-25 03:13:35,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:35,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:35,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307733953] [2020-09-25 03:13:35,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:35,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:35,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:35,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:35,555 INFO L87 Difference]: Start difference. First operand 1915 states and 2491 transitions. Second operand 3 states. [2020-09-25 03:13:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:35,671 INFO L93 Difference]: Finished difference Result 5307 states and 7000 transitions. [2020-09-25 03:13:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:35,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-09-25 03:13:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:35,687 INFO L225 Difference]: With dead ends: 5307 [2020-09-25 03:13:35,687 INFO L226 Difference]: Without dead ends: 3547 [2020-09-25 03:13:35,692 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 03:13:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2020-09-25 03:13:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3545. [2020-09-25 03:13:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-09-25 03:13:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4661 transitions. [2020-09-25 03:13:35,804 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4661 transitions. Word has length 222 [2020-09-25 03:13:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:35,804 INFO L479 AbstractCegarLoop]: Abstraction has 3545 states and 4661 transitions. [2020-09-25 03:13:35,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4661 transitions. [2020-09-25 03:13:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 03:13:35,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:35,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:35,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:13:35,812 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:35,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1449812573, now seen corresponding path program 1 times [2020-09-25 03:13:35,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:35,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599845037] [2020-09-25 03:13:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:13:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:37,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:37,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:37,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:13:37,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599845037] [2020-09-25 03:13:37,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:37,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:37,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940461917] [2020-09-25 03:13:37,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:37,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:37,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:37,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:37,246 INFO L87 Difference]: Start difference. First operand 3545 states and 4661 transitions. Second operand 3 states. [2020-09-25 03:13:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:37,520 INFO L93 Difference]: Finished difference Result 7257 states and 9616 transitions. [2020-09-25 03:13:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:37,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-25 03:13:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:37,537 INFO L225 Difference]: With dead ends: 7257 [2020-09-25 03:13:37,537 INFO L226 Difference]: Without dead ends: 3779 [2020-09-25 03:13:37,544 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 03:13:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2020-09-25 03:13:37,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3645. [2020-09-25 03:13:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3645 states. [2020-09-25 03:13:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 4745 transitions. [2020-09-25 03:13:37,648 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 4745 transitions. Word has length 225 [2020-09-25 03:13:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:37,649 INFO L479 AbstractCegarLoop]: Abstraction has 3645 states and 4745 transitions. [2020-09-25 03:13:37,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:37,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 4745 transitions. [2020-09-25 03:13:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 03:13:37,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:37,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:37,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:13:37,655 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:37,656 INFO L82 PathProgramCache]: Analyzing trace with hash 8001878, now seen corresponding path program 1 times [2020-09-25 03:13:37,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:37,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958015184] [2020-09-25 03:13:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 03:13:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-09-25 03:13:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 03:13:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 03:13:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:39,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:39,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:39,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:13:39,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958015184] [2020-09-25 03:13:39,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:39,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:39,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083819958] [2020-09-25 03:13:39,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:39,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:39,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:39,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:39,101 INFO L87 Difference]: Start difference. First operand 3645 states and 4745 transitions. Second operand 4 states. [2020-09-25 03:13:39,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:39,612 INFO L93 Difference]: Finished difference Result 11305 states and 14951 transitions. [2020-09-25 03:13:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:39,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2020-09-25 03:13:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:39,659 INFO L225 Difference]: With dead ends: 11305 [2020-09-25 03:13:39,659 INFO L226 Difference]: Without dead ends: 7711 [2020-09-25 03:13:39,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 03:13:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7711 states. [2020-09-25 03:13:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7711 to 3977. [2020-09-25 03:13:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3977 states. [2020-09-25 03:13:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 5273 transitions. [2020-09-25 03:13:39,804 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 5273 transitions. Word has length 226 [2020-09-25 03:13:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:39,805 INFO L479 AbstractCegarLoop]: Abstraction has 3977 states and 5273 transitions. [2020-09-25 03:13:39,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:39,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 5273 transitions. [2020-09-25 03:13:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 03:13:39,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:39,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:39,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:13:39,814 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1647539560, now seen corresponding path program 1 times [2020-09-25 03:13:39,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:39,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726132860] [2020-09-25 03:13:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:39,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 03:13:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 03:13:40,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 03:13:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:13:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:40,245 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 03:13:40,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726132860] [2020-09-25 03:13:40,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:40,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:40,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755665107] [2020-09-25 03:13:40,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:40,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:40,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:40,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:40,247 INFO L87 Difference]: Start difference. First operand 3977 states and 5273 transitions. Second operand 3 states. [2020-09-25 03:13:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:40,509 INFO L93 Difference]: Finished difference Result 9670 states and 12943 transitions. [2020-09-25 03:13:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:40,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-09-25 03:13:40,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:40,522 INFO L225 Difference]: With dead ends: 9670 [2020-09-25 03:13:40,522 INFO L226 Difference]: Without dead ends: 5848 [2020-09-25 03:13:40,530 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 03:13:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2020-09-25 03:13:40,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 5846. [2020-09-25 03:13:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5846 states. [2020-09-25 03:13:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 7753 transitions. [2020-09-25 03:13:40,751 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 7753 transitions. Word has length 238 [2020-09-25 03:13:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:40,752 INFO L479 AbstractCegarLoop]: Abstraction has 5846 states and 7753 transitions. [2020-09-25 03:13:40,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 7753 transitions. [2020-09-25 03:13:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 03:13:40,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:40,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:40,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:13:40,764 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:40,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:40,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1890280045, now seen corresponding path program 1 times [2020-09-25 03:13:40,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:40,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802176788] [2020-09-25 03:13:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 03:13:43,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2295 [2020-09-25 03:13:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 03:13:43,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:13:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:43,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:43,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:13:43,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802176788] [2020-09-25 03:13:43,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:43,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:43,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277446859] [2020-09-25 03:13:43,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:43,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:43,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:43,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:43,174 INFO L87 Difference]: Start difference. First operand 5846 states and 7753 transitions. Second operand 4 states. [2020-09-25 03:13:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:43,756 INFO L93 Difference]: Finished difference Result 17356 states and 23069 transitions. [2020-09-25 03:13:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:43,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-09-25 03:13:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:43,781 INFO L225 Difference]: With dead ends: 17356 [2020-09-25 03:13:43,781 INFO L226 Difference]: Without dead ends: 11665 [2020-09-25 03:13:43,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 03:13:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11665 states. [2020-09-25 03:13:43,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11665 to 5864. [2020-09-25 03:13:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5864 states. [2020-09-25 03:13:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7771 transitions. [2020-09-25 03:13:43,975 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7771 transitions. Word has length 240 [2020-09-25 03:13:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:43,976 INFO L479 AbstractCegarLoop]: Abstraction has 5864 states and 7771 transitions. [2020-09-25 03:13:43,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7771 transitions. [2020-09-25 03:13:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 03:13:43,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:43,987 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2020-09-25 03:13:43,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:13:43,988 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1454661678, now seen corresponding path program 1 times [2020-09-25 03:13:43,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:43,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856750071] [2020-09-25 03:13:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-09-25 03:13:46,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2685 [2020-09-25 03:13:46,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 03:13:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:13:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:46,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:46,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 03:13:46,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856750071] [2020-09-25 03:13:46,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:46,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:46,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160935697] [2020-09-25 03:13:46,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:46,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:46,755 INFO L87 Difference]: Start difference. First operand 5864 states and 7771 transitions. Second operand 3 states. [2020-09-25 03:13:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:46,937 INFO L93 Difference]: Finished difference Result 9798 states and 13019 transitions. [2020-09-25 03:13:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:46,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2020-09-25 03:13:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:46,953 INFO L225 Difference]: With dead ends: 9798 [2020-09-25 03:13:46,953 INFO L226 Difference]: Without dead ends: 4089 [2020-09-25 03:13:46,962 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 03:13:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2020-09-25 03:13:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4089. [2020-09-25 03:13:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2020-09-25 03:13:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5405 transitions. [2020-09-25 03:13:47,059 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5405 transitions. Word has length 259 [2020-09-25 03:13:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:47,059 INFO L479 AbstractCegarLoop]: Abstraction has 4089 states and 5405 transitions. [2020-09-25 03:13:47,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5405 transitions. [2020-09-25 03:13:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 03:13:47,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:47,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-09-25 03:13:47,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:13:47,066 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:47,067 INFO L82 PathProgramCache]: Analyzing trace with hash 977045703, now seen corresponding path program 1 times [2020-09-25 03:13:47,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:47,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158372142] [2020-09-25 03:13:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:47,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:48,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-25 03:13:48,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-09-25 03:13:48,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 03:13:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:13:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:48,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:48,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:48,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:48,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:48,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 03:13:48,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158372142] [2020-09-25 03:13:48,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:48,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:48,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135286137] [2020-09-25 03:13:48,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:48,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:48,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:48,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:48,711 INFO L87 Difference]: Start difference. First operand 4089 states and 5405 transitions. Second operand 3 states. [2020-09-25 03:13:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:48,992 INFO L93 Difference]: Finished difference Result 8283 states and 11027 transitions. [2020-09-25 03:13:48,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:48,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2020-09-25 03:13:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:49,000 INFO L225 Difference]: With dead ends: 8283 [2020-09-25 03:13:49,000 INFO L226 Difference]: Without dead ends: 4349 [2020-09-25 03:13:49,007 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 03:13:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2020-09-25 03:13:49,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4301. [2020-09-25 03:13:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4301 states. [2020-09-25 03:13:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 5661 transitions. [2020-09-25 03:13:49,116 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 5661 transitions. Word has length 260 [2020-09-25 03:13:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:49,117 INFO L479 AbstractCegarLoop]: Abstraction has 4301 states and 5661 transitions. [2020-09-25 03:13:49,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 5661 transitions. [2020-09-25 03:13:49,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 03:13:49,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:49,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-09-25 03:13:49,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:13:49,124 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:49,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2018772697, now seen corresponding path program 1 times [2020-09-25 03:13:49,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:49,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118053339] [2020-09-25 03:13:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:50,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:50,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-25 03:13:50,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-09-25 03:13:50,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 03:13:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:13:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:50,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:50,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:50,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:50,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:50,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 03:13:50,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118053339] [2020-09-25 03:13:50,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:50,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:50,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918955701] [2020-09-25 03:13:50,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:50,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:50,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:50,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:50,695 INFO L87 Difference]: Start difference. First operand 4301 states and 5661 transitions. Second operand 3 states. [2020-09-25 03:13:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:51,023 INFO L93 Difference]: Finished difference Result 8899 states and 11746 transitions. [2020-09-25 03:13:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:51,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2020-09-25 03:13:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:51,043 INFO L225 Difference]: With dead ends: 8899 [2020-09-25 03:13:51,044 INFO L226 Difference]: Without dead ends: 4673 [2020-09-25 03:13:51,050 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 03:13:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2020-09-25 03:13:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4449. [2020-09-25 03:13:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4449 states. [2020-09-25 03:13:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 5849 transitions. [2020-09-25 03:13:51,158 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 5849 transitions. Word has length 260 [2020-09-25 03:13:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:51,159 INFO L479 AbstractCegarLoop]: Abstraction has 4449 states and 5849 transitions. [2020-09-25 03:13:51,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 5849 transitions. [2020-09-25 03:13:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 03:13:51,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:51,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:51,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 03:13:51,166 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:51,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:51,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1857593177, now seen corresponding path program 2 times [2020-09-25 03:13:51,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:51,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315330255] [2020-09-25 03:13:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:53,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:53,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 03:13:53,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2410 [2020-09-25 03:13:53,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 03:13:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:13:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:53,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:53,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:53,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:53,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:53,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 03:13:53,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315330255] [2020-09-25 03:13:53,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:53,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:53,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064696890] [2020-09-25 03:13:53,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:53,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:53,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:53,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:53,671 INFO L87 Difference]: Start difference. First operand 4449 states and 5849 transitions. Second operand 4 states. [2020-09-25 03:13:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:54,295 INFO L93 Difference]: Finished difference Result 13681 states and 18033 transitions. [2020-09-25 03:13:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:54,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 268 [2020-09-25 03:13:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:54,310 INFO L225 Difference]: With dead ends: 13681 [2020-09-25 03:13:54,311 INFO L226 Difference]: Without dead ends: 9387 [2020-09-25 03:13:54,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 03:13:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9387 states. [2020-09-25 03:13:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9387 to 4677. [2020-09-25 03:13:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4677 states. [2020-09-25 03:13:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 6109 transitions. [2020-09-25 03:13:54,455 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 6109 transitions. Word has length 268 [2020-09-25 03:13:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:54,456 INFO L479 AbstractCegarLoop]: Abstraction has 4677 states and 6109 transitions. [2020-09-25 03:13:54,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 6109 transitions. [2020-09-25 03:13:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 03:13:54,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:54,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:54,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 03:13:54,464 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:54,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1980731129, now seen corresponding path program 2 times [2020-09-25 03:13:54,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:54,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967680044] [2020-09-25 03:13:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:57,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:57,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 03:13:57,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2668 [2020-09-25 03:13:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 03:13:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:13:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:57,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:57,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 03:13:57,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967680044] [2020-09-25 03:13:57,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:57,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:57,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058269109] [2020-09-25 03:13:57,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:57,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:57,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:57,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:57,222 INFO L87 Difference]: Start difference. First operand 4677 states and 6109 transitions. Second operand 4 states. [2020-09-25 03:13:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:57,755 INFO L93 Difference]: Finished difference Result 13869 states and 18165 transitions. [2020-09-25 03:13:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:57,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 268 [2020-09-25 03:13:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:57,769 INFO L225 Difference]: With dead ends: 13869 [2020-09-25 03:13:57,770 INFO L226 Difference]: Without dead ends: 9347 [2020-09-25 03:13:57,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 03:13:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2020-09-25 03:13:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 4689. [2020-09-25 03:13:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2020-09-25 03:13:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6113 transitions. [2020-09-25 03:13:57,941 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6113 transitions. Word has length 268 [2020-09-25 03:13:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:57,941 INFO L479 AbstractCegarLoop]: Abstraction has 4689 states and 6113 transitions. [2020-09-25 03:13:57,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:57,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6113 transitions. [2020-09-25 03:13:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-25 03:13:57,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:57,948 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:57,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 03:13:57,948 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:57,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:57,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1268615101, now seen corresponding path program 1 times [2020-09-25 03:13:57,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:57,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894470592] [2020-09-25 03:13:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:58,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 03:13:58,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-25 03:13:58,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 03:13:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:13:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:58,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:58,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 03:13:58,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894470592] [2020-09-25 03:13:58,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:58,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:58,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223378425] [2020-09-25 03:13:58,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:58,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:58,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:58,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:58,636 INFO L87 Difference]: Start difference. First operand 4689 states and 6113 transitions. Second operand 3 states. [2020-09-25 03:13:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:59,009 INFO L93 Difference]: Finished difference Result 11400 states and 14983 transitions. [2020-09-25 03:13:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:59,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 272 [2020-09-25 03:13:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:59,023 INFO L225 Difference]: With dead ends: 11400 [2020-09-25 03:13:59,023 INFO L226 Difference]: Without dead ends: 6866