/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 interpolation-heuristic=FIRST --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_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:19,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:19,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:19,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:19,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:19,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:19,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:19,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:19,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:19,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:19,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:19,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:19,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:19,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:19,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:19,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:19,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:19,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:19,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:19,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:19,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:19,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:19,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:19,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:19,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:19,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:19,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:19,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:19,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:19,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:19,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:19,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:19,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:19,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:19,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:19,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:19,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:19,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:19,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:19,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:19,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:19,074 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 [2020-09-24 16:00:19,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:19,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:19,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:19,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:19,103 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:19,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:19,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:19,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:19,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:19,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:19,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:19,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:19,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:19,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:19,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:19,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:19,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:19,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:19,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:19,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:19,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:19,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:19,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:19,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:19,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:19,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:19,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:19,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:19,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:19,110 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:19,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:19,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:19,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:19,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:19,633 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:19,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-24 16:00:19,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b5205a67/d6633b0f027b4d87ae295b772e1b8b4c/FLAG05b1293b6 [2020-09-24 16:00:20,335 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:20,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-24 16:00:20,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b5205a67/d6633b0f027b4d87ae295b772e1b8b4c/FLAG05b1293b6 [2020-09-24 16:00:20,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b5205a67/d6633b0f027b4d87ae295b772e1b8b4c [2020-09-24 16:00:20,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:20,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:20,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:20,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:20,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:20,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:20" (1/1) ... [2020-09-24 16:00:20,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:20, skipping insertion in model container [2020-09-24 16:00:20,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:20" (1/1) ... [2020-09-24 16:00:20,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:20,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:21,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:21,114 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:21,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:21,305 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:21,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21 WrapperNode [2020-09-24 16:00:21,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:21,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:21,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:21,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:21,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (1/1) ... [2020-09-24 16:00:21,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (1/1) ... [2020-09-24 16:00:21,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (1/1) ... [2020-09-24 16:00:21,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (1/1) ... [2020-09-24 16:00:21,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (1/1) ... [2020-09-24 16:00:21,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (1/1) ... [2020-09-24 16:00:21,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (1/1) ... [2020-09-24 16:00:21,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:21,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:21,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:21,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:21,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (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 [2020-09-24 16:00:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 16:00:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 16:00:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 16:00:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 16:00:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:21,683 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 16:00:22,412 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 16:00:22,412 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 16:00:22,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:22,430 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:00:22,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:22 BoogieIcfgContainer [2020-09-24 16:00:22,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:22,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:22,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:22,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:22,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:20" (1/3) ... [2020-09-24 16:00:22,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43341e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:22, skipping insertion in model container [2020-09-24 16:00:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:21" (2/3) ... [2020-09-24 16:00:22,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43341e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:22, skipping insertion in model container [2020-09-24 16:00:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:22" (3/3) ... [2020-09-24 16:00:22,455 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-24 16:00:22,467 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:22,479 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:22,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:22,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:22,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:22,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:22,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:22,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:22,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:22,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:22,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-24 16:00:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 16:00:22,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:22,590 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] [2020-09-24 16:00:22,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:22,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-24 16:00:22,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:22,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230010249] [2020-09-24 16:00:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:22,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:22,875 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:22,875 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 16:00:22,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 16:00:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:00:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 16:00:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:23,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:23,178 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:23,178 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:23,178 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:23,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:23,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:23,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:23,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:23,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:23,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230010249] [2020-09-24 16:00:23,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:23,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:23,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506969605] [2020-09-24 16:00:23,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:23,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:23,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:23,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:23,281 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-09-24 16:00:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:23,712 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-09-24 16:00:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:23,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 16:00:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:23,738 INFO L225 Difference]: With dead ends: 802 [2020-09-24 16:00:23,739 INFO L226 Difference]: Without dead ends: 459 [2020-09-24 16:00:23,746 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 [2020-09-24 16:00:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-24 16:00:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-09-24 16:00:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-24 16:00:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-09-24 16:00:23,884 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-09-24 16:00:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:23,888 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-09-24 16:00:23,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-09-24 16:00:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 16:00:23,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:23,901 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] [2020-09-24 16:00:23,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:23,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:23,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-09-24 16:00:23,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:23,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434973809] [2020-09-24 16:00:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,023 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 16:00:24,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 16:00:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:00:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 16:00:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,180 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:24,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:24,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434973809] [2020-09-24 16:00:24,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:24,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:24,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958022573] [2020-09-24 16:00:24,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:24,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:24,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:24,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:24,216 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-09-24 16:00:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:24,538 INFO L93 Difference]: Finished difference Result 839 states and 1069 transitions. [2020-09-24 16:00:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:24,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-24 16:00:24,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:24,543 INFO L225 Difference]: With dead ends: 839 [2020-09-24 16:00:24,543 INFO L226 Difference]: Without dead ends: 525 [2020-09-24 16:00:24,546 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 [2020-09-24 16:00:24,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-09-24 16:00:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 507. [2020-09-24 16:00:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-24 16:00:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 634 transitions. [2020-09-24 16:00:24,571 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 634 transitions. Word has length 166 [2020-09-24 16:00:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:24,572 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 634 transitions. [2020-09-24 16:00:24,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:24,572 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 634 transitions. [2020-09-24 16:00:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 16:00:24,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:24,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:24,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:24,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:24,576 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-09-24 16:00:24,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:24,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998172717] [2020-09-24 16:00:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 16:00:24,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:24,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-24 16:00:24,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:00:24,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:24,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,711 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,711 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,712 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:24,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:24,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:24,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998172717] [2020-09-24 16:00:24,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:24,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:24,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048807007] [2020-09-24 16:00:24,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:24,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:24,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:24,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:24,758 INFO L87 Difference]: Start difference. First operand 507 states and 634 transitions. Second operand 3 states. [2020-09-24 16:00:24,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:24,817 INFO L93 Difference]: Finished difference Result 887 states and 1138 transitions. [2020-09-24 16:00:24,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:24,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-09-24 16:00:24,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:24,821 INFO L225 Difference]: With dead ends: 887 [2020-09-24 16:00:24,822 INFO L226 Difference]: Without dead ends: 523 [2020-09-24 16:00:24,823 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 [2020-09-24 16:00:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-09-24 16:00:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2020-09-24 16:00:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-09-24 16:00:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2020-09-24 16:00:24,841 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 167 [2020-09-24 16:00:24,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:24,842 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2020-09-24 16:00:24,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:24,842 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2020-09-24 16:00:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 16:00:24,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:24,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:24,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:24,845 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash 611444181, now seen corresponding path program 1 times [2020-09-24 16:00:24,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:24,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276414990] [2020-09-24 16:00:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,876 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,876 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 16:00:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-24 16:00:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:00:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,917 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,917 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,918 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:24,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276414990] [2020-09-24 16:00:24,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:24,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:24,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891991156] [2020-09-24 16:00:24,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:24,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:24,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:24,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:24,948 INFO L87 Difference]: Start difference. First operand 523 states and 650 transitions. Second operand 3 states. [2020-09-24 16:00:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:24,985 INFO L93 Difference]: Finished difference Result 1256 states and 1619 transitions. [2020-09-24 16:00:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:24,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-24 16:00:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:24,993 INFO L225 Difference]: With dead ends: 1256 [2020-09-24 16:00:24,993 INFO L226 Difference]: Without dead ends: 892 [2020-09-24 16:00:24,995 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 [2020-09-24 16:00:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-24 16:00:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2020-09-24 16:00:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-24 16:00:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1127 transitions. [2020-09-24 16:00:25,032 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1127 transitions. Word has length 168 [2020-09-24 16:00:25,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:25,033 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1127 transitions. [2020-09-24 16:00:25,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:25,034 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1127 transitions. [2020-09-24 16:00:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 16:00:25,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:25,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:25,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:25,038 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash 283864666, now seen corresponding path program 1 times [2020-09-24 16:00:25,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:25,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584163105] [2020-09-24 16:00:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,076 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,076 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 16:00:25,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:25,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-24 16:00:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 16:00:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,127 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,128 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,128 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:25,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:25,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:25,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:25,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584163105] [2020-09-24 16:00:25,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:25,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:25,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190251604] [2020-09-24 16:00:25,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:25,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:25,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:25,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:25,187 INFO L87 Difference]: Start difference. First operand 890 states and 1127 transitions. Second operand 3 states. [2020-09-24 16:00:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:25,232 INFO L93 Difference]: Finished difference Result 2331 states and 3030 transitions. [2020-09-24 16:00:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:25,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-24 16:00:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:25,247 INFO L225 Difference]: With dead ends: 2331 [2020-09-24 16:00:25,247 INFO L226 Difference]: Without dead ends: 1617 [2020-09-24 16:00:25,250 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 [2020-09-24 16:00:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2020-09-24 16:00:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1265. [2020-09-24 16:00:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-09-24 16:00:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1618 transitions. [2020-09-24 16:00:25,324 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1618 transitions. Word has length 169 [2020-09-24 16:00:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:25,325 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1618 transitions. [2020-09-24 16:00:25,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1618 transitions. [2020-09-24 16:00:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 16:00:25,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:25,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:25,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:25,332 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:25,336 INFO L82 PathProgramCache]: Analyzing trace with hash 261232412, now seen corresponding path program 1 times [2020-09-24 16:00:25,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:25,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543697176] [2020-09-24 16:00:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,376 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,376 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,377 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,377 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 16:00:25,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:25,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:25,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-09-24 16:00:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:00:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:25,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,440 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,440 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:25,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:25,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:25,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543697176] [2020-09-24 16:00:25,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:25,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:25,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670359140] [2020-09-24 16:00:25,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:25,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:25,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:25,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:25,487 INFO L87 Difference]: Start difference. First operand 1265 states and 1618 transitions. Second operand 4 states. [2020-09-24 16:00:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:25,833 INFO L93 Difference]: Finished difference Result 2503 states and 3249 transitions. [2020-09-24 16:00:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:25,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-09-24 16:00:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:25,845 INFO L225 Difference]: With dead ends: 2503 [2020-09-24 16:00:25,846 INFO L226 Difference]: Without dead ends: 1431 [2020-09-24 16:00:25,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-09-24 16:00:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1327. [2020-09-24 16:00:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-09-24 16:00:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1700 transitions. [2020-09-24 16:00:25,918 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1700 transitions. Word has length 169 [2020-09-24 16:00:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:25,919 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1700 transitions. [2020-09-24 16:00:25,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1700 transitions. [2020-09-24 16:00:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 16:00:25,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:25,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:25,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:25,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:25,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:25,928 INFO L82 PathProgramCache]: Analyzing trace with hash 780905830, now seen corresponding path program 1 times [2020-09-24 16:00:25,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:25,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425756204] [2020-09-24 16:00:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,968 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,969 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,969 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 16:00:25,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:25,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-24 16:00:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 16:00:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,052 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,053 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:26,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:26,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:26,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425756204] [2020-09-24 16:00:26,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:26,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:26,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766926806] [2020-09-24 16:00:26,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:26,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:26,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:26,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:26,126 INFO L87 Difference]: Start difference. First operand 1327 states and 1700 transitions. Second operand 3 states. [2020-09-24 16:00:26,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:26,195 INFO L93 Difference]: Finished difference Result 2461 states and 3203 transitions. [2020-09-24 16:00:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:26,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-09-24 16:00:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:26,208 INFO L225 Difference]: With dead ends: 2461 [2020-09-24 16:00:26,208 INFO L226 Difference]: Without dead ends: 1327 [2020-09-24 16:00:26,214 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 [2020-09-24 16:00:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-09-24 16:00:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1327. [2020-09-24 16:00:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-09-24 16:00:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1685 transitions. [2020-09-24 16:00:26,335 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1685 transitions. Word has length 182 [2020-09-24 16:00:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:26,336 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1685 transitions. [2020-09-24 16:00:26,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1685 transitions. [2020-09-24 16:00:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 16:00:26,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:26,343 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] [2020-09-24 16:00:26,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:26,344 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:26,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2039964467, now seen corresponding path program 1 times [2020-09-24 16:00:26,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:26,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566435202] [2020-09-24 16:00:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,392 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,393 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,393 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 16:00:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-24 16:00:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 16:00:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,436 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:26,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:26,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566435202] [2020-09-24 16:00:26,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:26,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:26,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803615674] [2020-09-24 16:00:26,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:26,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:26,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:26,470 INFO L87 Difference]: Start difference. First operand 1327 states and 1685 transitions. Second operand 3 states. [2020-09-24 16:00:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:26,524 INFO L93 Difference]: Finished difference Result 2482 states and 3197 transitions. [2020-09-24 16:00:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:26,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-09-24 16:00:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:26,531 INFO L225 Difference]: With dead ends: 2482 [2020-09-24 16:00:26,531 INFO L226 Difference]: Without dead ends: 1348 [2020-09-24 16:00:26,534 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 [2020-09-24 16:00:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-09-24 16:00:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1345. [2020-09-24 16:00:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2020-09-24 16:00:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1691 transitions. [2020-09-24 16:00:26,595 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1691 transitions. Word has length 183 [2020-09-24 16:00:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:26,596 INFO L479 AbstractCegarLoop]: Abstraction has 1345 states and 1691 transitions. [2020-09-24 16:00:26,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1691 transitions. [2020-09-24 16:00:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 16:00:26,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:26,600 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] [2020-09-24 16:00:26,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:26,600 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:26,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:26,601 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-09-24 16:00:26,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:26,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635659421] [2020-09-24 16:00:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,653 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-24 16:00:26,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:00:26,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 16:00:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:00:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,690 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:26,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:26,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:26,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635659421] [2020-09-24 16:00:26,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:26,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:26,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986800505] [2020-09-24 16:00:26,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:26,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:26,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:26,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:26,715 INFO L87 Difference]: Start difference. First operand 1345 states and 1691 transitions. Second operand 3 states. [2020-09-24 16:00:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:27,035 INFO L93 Difference]: Finished difference Result 2684 states and 3482 transitions. [2020-09-24 16:00:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:27,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-24 16:00:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:27,048 INFO L225 Difference]: With dead ends: 2684 [2020-09-24 16:00:27,048 INFO L226 Difference]: Without dead ends: 1466 [2020-09-24 16:00:27,052 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 [2020-09-24 16:00:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-09-24 16:00:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1425. [2020-09-24 16:00:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-09-24 16:00:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1800 transitions. [2020-09-24 16:00:27,155 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1800 transitions. Word has length 187 [2020-09-24 16:00:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:27,156 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 1800 transitions. [2020-09-24 16:00:27,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1800 transitions. [2020-09-24 16:00:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 16:00:27,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:27,164 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] [2020-09-24 16:00:27,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:00:27,164 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:27,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1739161684, now seen corresponding path program 1 times [2020-09-24 16:00:27,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:27,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974363087] [2020-09-24 16:00:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,201 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 16:00:27,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 16:00:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 16:00:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,252 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,253 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,253 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:27,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:27,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:27,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974363087] [2020-09-24 16:00:27,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:27,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:27,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736986504] [2020-09-24 16:00:27,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:27,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:27,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:27,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:27,300 INFO L87 Difference]: Start difference. First operand 1425 states and 1800 transitions. Second operand 3 states. [2020-09-24 16:00:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:27,637 INFO L93 Difference]: Finished difference Result 2826 states and 3638 transitions. [2020-09-24 16:00:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:27,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-09-24 16:00:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:27,650 INFO L225 Difference]: With dead ends: 2826 [2020-09-24 16:00:27,650 INFO L226 Difference]: Without dead ends: 1558 [2020-09-24 16:00:27,655 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 [2020-09-24 16:00:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-09-24 16:00:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1505. [2020-09-24 16:00:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-09-24 16:00:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1875 transitions. [2020-09-24 16:00:27,739 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1875 transitions. Word has length 189 [2020-09-24 16:00:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:27,739 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1875 transitions. [2020-09-24 16:00:27,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1875 transitions. [2020-09-24 16:00:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 16:00:27,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:27,746 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] [2020-09-24 16:00:27,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:00:27,747 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1187027627, now seen corresponding path program 1 times [2020-09-24 16:00:27,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:27,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193990564] [2020-09-24 16:00:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,786 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,786 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,787 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 16:00:27,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:27,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 16:00:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 16:00:27,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,849 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,849 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,850 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:27,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:27,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:27,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:27,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:27,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:27,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193990564] [2020-09-24 16:00:27,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:27,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:27,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497573460] [2020-09-24 16:00:27,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:27,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:27,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:27,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:27,903 INFO L87 Difference]: Start difference. First operand 1505 states and 1875 transitions. Second operand 4 states. [2020-09-24 16:00:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:28,253 INFO L93 Difference]: Finished difference Result 2968 states and 3722 transitions. [2020-09-24 16:00:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:28,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-09-24 16:00:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:28,267 INFO L225 Difference]: With dead ends: 2968 [2020-09-24 16:00:28,267 INFO L226 Difference]: Without dead ends: 1623 [2020-09-24 16:00:28,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-09-24 16:00:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1537. [2020-09-24 16:00:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2020-09-24 16:00:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1916 transitions. [2020-09-24 16:00:28,376 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1916 transitions. Word has length 193 [2020-09-24 16:00:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,377 INFO L479 AbstractCegarLoop]: Abstraction has 1537 states and 1916 transitions. [2020-09-24 16:00:28,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1916 transitions. [2020-09-24 16:00:28,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 16:00:28,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,385 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:28,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:00:28,386 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,386 INFO L82 PathProgramCache]: Analyzing trace with hash -710162504, now seen corresponding path program 1 times [2020-09-24 16:00:28,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574272815] [2020-09-24 16:00:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,421 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,422 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,422 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,423 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 16:00:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:28,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 16:00:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 16:00:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:28,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,507 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,507 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,509 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,509 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:28,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:28,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:28,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574272815] [2020-09-24 16:00:28,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:28,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:28,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066658407] [2020-09-24 16:00:28,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:28,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:28,543 INFO L87 Difference]: Start difference. First operand 1537 states and 1916 transitions. Second operand 4 states. [2020-09-24 16:00:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:28,782 INFO L93 Difference]: Finished difference Result 3050 states and 3822 transitions. [2020-09-24 16:00:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:28,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-09-24 16:00:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:28,791 INFO L225 Difference]: With dead ends: 3050 [2020-09-24 16:00:28,791 INFO L226 Difference]: Without dead ends: 1679 [2020-09-24 16:00:28,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:28,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2020-09-24 16:00:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1561. [2020-09-24 16:00:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-09-24 16:00:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 1940 transitions. [2020-09-24 16:00:28,854 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 1940 transitions. Word has length 198 [2020-09-24 16:00:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,854 INFO L479 AbstractCegarLoop]: Abstraction has 1561 states and 1940 transitions. [2020-09-24 16:00:28,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 1940 transitions. [2020-09-24 16:00:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 16:00:28,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:28,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:00:28,859 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854146, now seen corresponding path program 1 times [2020-09-24 16:00:28,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779980894] [2020-09-24 16:00:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,891 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,892 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,892 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,892 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 16:00:28,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:00:28,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 16:00:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 16:00:28,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,945 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,945 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,946 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,947 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:28,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:28,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:28,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:28,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779980894] [2020-09-24 16:00:28,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:28,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:28,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357255095] [2020-09-24 16:00:28,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:28,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:28,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:28,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:28,977 INFO L87 Difference]: Start difference. First operand 1561 states and 1940 transitions. Second operand 4 states. [2020-09-24 16:00:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:29,250 INFO L93 Difference]: Finished difference Result 3104 states and 3879 transitions. [2020-09-24 16:00:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:29,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-24 16:00:29,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:29,260 INFO L225 Difference]: With dead ends: 3104 [2020-09-24 16:00:29,260 INFO L226 Difference]: Without dead ends: 1724 [2020-09-24 16:00:29,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2020-09-24 16:00:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1638. [2020-09-24 16:00:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-09-24 16:00:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2032 transitions. [2020-09-24 16:00:29,351 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2032 transitions. Word has length 199 [2020-09-24 16:00:29,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:29,352 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 2032 transitions. [2020-09-24 16:00:29,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2032 transitions. [2020-09-24 16:00:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 16:00:29,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:29,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:29,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:00:29,361 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash 622934254, now seen corresponding path program 1 times [2020-09-24 16:00:29,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:29,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809700818] [2020-09-24 16:00:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,397 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,397 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 16:00:29,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:29,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 16:00:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 16:00:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,444 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,444 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:29,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:29,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809700818] [2020-09-24 16:00:29,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:29,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:29,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748931113] [2020-09-24 16:00:29,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:29,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:29,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:29,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:29,498 INFO L87 Difference]: Start difference. First operand 1638 states and 2032 transitions. Second operand 4 states. [2020-09-24 16:00:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:29,735 INFO L93 Difference]: Finished difference Result 3231 states and 4033 transitions. [2020-09-24 16:00:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:29,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-24 16:00:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:29,743 INFO L225 Difference]: With dead ends: 3231 [2020-09-24 16:00:29,743 INFO L226 Difference]: Without dead ends: 1756 [2020-09-24 16:00:29,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2020-09-24 16:00:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1614. [2020-09-24 16:00:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1614 states. [2020-09-24 16:00:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2008 transitions. [2020-09-24 16:00:29,806 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2008 transitions. Word has length 199 [2020-09-24 16:00:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:29,807 INFO L479 AbstractCegarLoop]: Abstraction has 1614 states and 2008 transitions. [2020-09-24 16:00:29,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:29,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2008 transitions. [2020-09-24 16:00:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 16:00:29,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:29,812 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:29,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:00:29,812 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash -455131385, now seen corresponding path program 1 times [2020-09-24 16:00:29,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:29,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615322896] [2020-09-24 16:00:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,841 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,841 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,842 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,842 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 16:00:29,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:29,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:29,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-24 16:00:29,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:00:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,880 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,880 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,880 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,881 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:29,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:29,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:29,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615322896] [2020-09-24 16:00:29,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:29,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:29,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769361419] [2020-09-24 16:00:29,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:29,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:29,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:29,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:29,912 INFO L87 Difference]: Start difference. First operand 1614 states and 2008 transitions. Second operand 3 states. [2020-09-24 16:00:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,036 INFO L93 Difference]: Finished difference Result 4408 states and 5579 transitions. [2020-09-24 16:00:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-24 16:00:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,051 INFO L225 Difference]: With dead ends: 4408 [2020-09-24 16:00:30,051 INFO L226 Difference]: Without dead ends: 2987 [2020-09-24 16:00:30,059 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 [2020-09-24 16:00:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-09-24 16:00:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2985. [2020-09-24 16:00:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2985 states. [2020-09-24 16:00:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 3731 transitions. [2020-09-24 16:00:30,163 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 3731 transitions. Word has length 200 [2020-09-24 16:00:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,163 INFO L479 AbstractCegarLoop]: Abstraction has 2985 states and 3731 transitions. [2020-09-24 16:00:30,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 3731 transitions. [2020-09-24 16:00:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 16:00:30,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 16:00:30,169 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1292077120, now seen corresponding path program 1 times [2020-09-24 16:00:30,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995017007] [2020-09-24 16:00:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,206 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,206 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,207 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,207 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 16:00:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:30,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 16:00:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 16:00:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:30,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995017007] [2020-09-24 16:00:30,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:30,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125465951] [2020-09-24 16:00:30,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:30,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:30,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:30,286 INFO L87 Difference]: Start difference. First operand 2985 states and 3731 transitions. Second operand 4 states. [2020-09-24 16:00:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,600 INFO L93 Difference]: Finished difference Result 6161 states and 7692 transitions. [2020-09-24 16:00:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:30,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-09-24 16:00:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,615 INFO L225 Difference]: With dead ends: 6161 [2020-09-24 16:00:30,616 INFO L226 Difference]: Without dead ends: 3339 [2020-09-24 16:00:30,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-09-24 16:00:30,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3169. [2020-09-24 16:00:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3169 states. [2020-09-24 16:00:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 3945 transitions. [2020-09-24 16:00:30,717 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 3945 transitions. Word has length 200 [2020-09-24 16:00:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,717 INFO L479 AbstractCegarLoop]: Abstraction has 3169 states and 3945 transitions. [2020-09-24 16:00:30,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 3945 transitions. [2020-09-24 16:00:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 16:00:30,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 16:00:30,723 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash 595350838, now seen corresponding path program 1 times [2020-09-24 16:00:30,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137038989] [2020-09-24 16:00:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,756 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,756 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,757 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,757 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 16:00:30,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:30,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-24 16:00:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:00:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,817 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,817 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,817 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,818 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:30,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137038989] [2020-09-24 16:00:30,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:30,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094597426] [2020-09-24 16:00:30,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:30,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:30,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:30,865 INFO L87 Difference]: Start difference. First operand 3169 states and 3945 transitions. Second operand 4 states. [2020-09-24 16:00:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,067 INFO L93 Difference]: Finished difference Result 10805 states and 13533 transitions. [2020-09-24 16:00:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:31,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-24 16:00:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,099 INFO L225 Difference]: With dead ends: 10805 [2020-09-24 16:00:31,099 INFO L226 Difference]: Without dead ends: 7829 [2020-09-24 16:00:31,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7829 states. [2020-09-24 16:00:31,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7829 to 4659. [2020-09-24 16:00:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4659 states. [2020-09-24 16:00:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 5724 transitions. [2020-09-24 16:00:31,296 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 5724 transitions. Word has length 201 [2020-09-24 16:00:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,297 INFO L479 AbstractCegarLoop]: Abstraction has 4659 states and 5724 transitions. [2020-09-24 16:00:31,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 5724 transitions. [2020-09-24 16:00:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 16:00:31,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 16:00:31,303 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,303 INFO L82 PathProgramCache]: Analyzing trace with hash -192006858, now seen corresponding path program 1 times [2020-09-24 16:00:31,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190626481] [2020-09-24 16:00:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,347 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,348 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,348 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 16:00:31,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:31,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 16:00:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 16:00:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,407 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,407 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,407 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,408 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:31,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190626481] [2020-09-24 16:00:31,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:31,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863289791] [2020-09-24 16:00:31,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:31,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:31,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:31,453 INFO L87 Difference]: Start difference. First operand 4659 states and 5724 transitions. Second operand 4 states. [2020-09-24 16:00:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,773 INFO L93 Difference]: Finished difference Result 7844 states and 9602 transitions. [2020-09-24 16:00:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:31,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-24 16:00:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,796 INFO L225 Difference]: With dead ends: 7844 [2020-09-24 16:00:31,796 INFO L226 Difference]: Without dead ends: 5024 [2020-09-24 16:00:31,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2020-09-24 16:00:31,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4659. [2020-09-24 16:00:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4659 states. [2020-09-24 16:00:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 5724 transitions. [2020-09-24 16:00:31,944 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 5724 transitions. Word has length 201 [2020-09-24 16:00:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,944 INFO L479 AbstractCegarLoop]: Abstraction has 4659 states and 5724 transitions. [2020-09-24 16:00:31,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:31,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 5724 transitions. [2020-09-24 16:00:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 16:00:31,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 16:00:31,950 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-24 16:00:31,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24402412] [2020-09-24 16:00:31,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:00:31,990 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:00:31,990 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:00:31,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 16:00:32,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:32 BoogieIcfgContainer [2020-09-24 16:00:32,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:32,053 INFO L168 Benchmark]: Toolchain (without parser) took 11424.92 ms. Allocated memory was 135.8 MB in the beginning and 561.0 MB in the end (delta: 425.2 MB). Free memory was 98.6 MB in the beginning and 397.6 MB in the end (delta: -299.0 MB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,054 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.23 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 98.0 MB in the beginning and 173.5 MB in the end (delta: -75.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,063 INFO L168 Benchmark]: Boogie Preprocessor took 66.21 ms. Allocated memory is still 198.7 MB. Free memory was 173.5 MB in the beginning and 170.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,063 INFO L168 Benchmark]: RCFGBuilder took 1072.03 ms. Allocated memory is still 198.7 MB. Free memory was 170.6 MB in the beginning and 99.3 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,064 INFO L168 Benchmark]: TraceAbstraction took 9602.87 ms. Allocated memory was 198.7 MB in the beginning and 561.0 MB in the end (delta: 362.3 MB). Free memory was 98.6 MB in the beginning and 397.6 MB in the end (delta: -299.0 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.23 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 98.0 MB in the beginning and 173.5 MB in the end (delta: -75.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.21 ms. Allocated memory is still 198.7 MB. Free memory was 173.5 MB in the beginning and 170.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1072.03 ms. Allocated memory is still 198.7 MB. Free memory was 170.6 MB in the beginning and 99.3 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9602.87 ms. Allocated memory was 198.7 MB in the beginning and 561.0 MB in the end (delta: 362.3 MB). Free memory was 98.6 MB in the beginning and 397.6 MB in the end (delta: -299.0 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 640]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L645] int s ; [L646] int tmp ; [L650] s = 8464 [L651] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__reuse_message = 0 [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND TRUE tmp___1 + 12288 [L90] COND TRUE tmp___2 + 16384 [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND FALSE !(state == 8496) [L614] COND FALSE !(\read(s__debug)) [L620] COND FALSE !(cb != 0) [L629] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 8512 [L297] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND TRUE state == 8496 [L640] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 426 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.4s, OverallIterations: 19, TraceHistogramMax: 2, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8392 SDtfs, 7238 SDslu, 9158 SDs, 0 SdLazy, 2113 SolverSat, 253 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4659occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 4727 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 3530 NumberOfCodeBlocks, 3530 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3311 ConstructedInterpolants, 0 QuantifiedInterpolants, 910527 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 162/162 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...