/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 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 17:06:31,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:06:31,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:06:31,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:06:31,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:06:31,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:06:31,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:06:31,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:06:31,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:06:31,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:06:31,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:06:31,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:06:31,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:06:31,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:06:31,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:06:31,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:06:31,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:06:31,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:06:31,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:06:31,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:06:31,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:06:31,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:06:31,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:06:31,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:06:31,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:06:31,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:06:31,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:06:31,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:06:31,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:06:31,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:06:31,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:06:31,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:06:31,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:06:31,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:06:31,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:06:31,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:06:31,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:06:31,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:06:31,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:06:31,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:06:31,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:06:31,277 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 17:06:31,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:06:31,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:06:31,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:06:31,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:06:31,327 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:06:31,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:06:31,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:06:31,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:06:31,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:06:31,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:06:31,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:06:31,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:06:31,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:06:31,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:06:31,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:06:31,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:06:31,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:06:31,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:06:31,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:06:31,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:06:31,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:06:31,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:06:31,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:06:31,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:06:31,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:06:31,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:06:31,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:06:31,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:06:31,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:06:31,334 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;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;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;log-additional-information=true; [2020-09-24 17:06:31,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:06:31,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:06:31,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:06:31,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:06:31,831 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:06:31,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-24 17:06:31,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daf0fb4cd/908d669f9b70415db9e51d98c4471157/FLAG04048be26 [2020-09-24 17:06:32,472 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:06:32,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-24 17:06:32,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daf0fb4cd/908d669f9b70415db9e51d98c4471157/FLAG04048be26 [2020-09-24 17:06:32,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daf0fb4cd/908d669f9b70415db9e51d98c4471157 [2020-09-24 17:06:32,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:06:32,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:06:32,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:32,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:06:32,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:06:32,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:32" (1/1) ... [2020-09-24 17:06:32,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e46675d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:32, skipping insertion in model container [2020-09-24 17:06:32,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:32" (1/1) ... [2020-09-24 17:06:32,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:06:32,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:06:33,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:33,203 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:06:33,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:33,371 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:06:33,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33 WrapperNode [2020-09-24 17:06:33,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:33,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:06:33,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:06:33,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:06:33,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (1/1) ... [2020-09-24 17:06:33,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (1/1) ... [2020-09-24 17:06:33,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (1/1) ... [2020-09-24 17:06:33,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (1/1) ... [2020-09-24 17:06:33,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (1/1) ... [2020-09-24 17:06:33,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (1/1) ... [2020-09-24 17:06:33,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (1/1) ... [2020-09-24 17:06:33,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:06:33,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:06:33,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:06:33,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:06:33,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (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 17:06:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:06:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:06:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 17:06:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:06:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:06:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 17:06:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:06:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 17:06:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 17:06:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:06:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:06:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:06:33,754 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 17:06:34,462 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 17:06:34,462 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 17:06:34,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:06:34,490 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:06:34,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:34 BoogieIcfgContainer [2020-09-24 17:06:34,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:06:34,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:06:34,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:06:34,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:06:34,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:06:32" (1/3) ... [2020-09-24 17:06:34,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cedac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:34, skipping insertion in model container [2020-09-24 17:06:34,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:33" (2/3) ... [2020-09-24 17:06:34,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cedac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:34, skipping insertion in model container [2020-09-24 17:06:34,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:34" (3/3) ... [2020-09-24 17:06:34,510 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-24 17:06:34,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:06:34,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:06:34,556 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:06:34,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:06:34,589 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:06:34,589 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:06:34,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:06:34,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:06:34,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:06:34,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:06:34,590 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:06:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-24 17:06:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 17:06:34,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:34,642 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 17:06:34,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-24 17:06:34,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:34,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748149076] [2020-09-24 17:06:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:36,270 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:36,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 17:06:36,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:06:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1373 [2020-09-24 17:06:36,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:06:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-09-24 17:06:36,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:06:36,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:06:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:36,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:36,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:36,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:36,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:36,438 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 17:06:36,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748149076] [2020-09-24 17:06:36,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:36,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:06:36,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227084085] [2020-09-24 17:06:36,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:06:36,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:36,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:06:36,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:06:36,470 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 4 states. [2020-09-24 17:06:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:36,922 INFO L93 Difference]: Finished difference Result 756 states and 995 transitions. [2020-09-24 17:06:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:06:36,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-24 17:06:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:36,961 INFO L225 Difference]: With dead ends: 756 [2020-09-24 17:06:36,961 INFO L226 Difference]: Without dead ends: 425 [2020-09-24 17:06:36,971 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 17:06:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-09-24 17:06:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 414. [2020-09-24 17:06:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-09-24 17:06:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 500 transitions. [2020-09-24 17:06:37,092 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 500 transitions. Word has length 158 [2020-09-24 17:06:37,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:37,097 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 500 transitions. [2020-09-24 17:06:37,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:06:37,097 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 500 transitions. [2020-09-24 17:06:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 17:06:37,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:37,115 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] [2020-09-24 17:06:37,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:06:37,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:37,117 INFO L82 PathProgramCache]: Analyzing trace with hash -948298101, now seen corresponding path program 1 times [2020-09-24 17:06:37,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:37,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595002618] [2020-09-24 17:06:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:38,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:38,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 17:06:38,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:06:38,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-09-24 17:06:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-24 17:06:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:06:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:38,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:38,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:06:38,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:38,376 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 17:06:38,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595002618] [2020-09-24 17:06:38,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:38,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:38,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053610237] [2020-09-24 17:06:38,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:38,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:38,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:38,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:38,382 INFO L87 Difference]: Start difference. First operand 414 states and 500 transitions. Second operand 3 states. [2020-09-24 17:06:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:38,439 INFO L93 Difference]: Finished difference Result 951 states and 1196 transitions. [2020-09-24 17:06:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:38,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-09-24 17:06:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:38,448 INFO L225 Difference]: With dead ends: 951 [2020-09-24 17:06:38,448 INFO L226 Difference]: Without dead ends: 680 [2020-09-24 17:06:38,454 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 17:06:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-09-24 17:06:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 678. [2020-09-24 17:06:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-09-24 17:06:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 840 transitions. [2020-09-24 17:06:38,501 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 840 transitions. Word has length 163 [2020-09-24 17:06:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:38,503 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 840 transitions. [2020-09-24 17:06:38,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 840 transitions. [2020-09-24 17:06:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 17:06:38,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:38,511 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] [2020-09-24 17:06:38,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:06:38,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:38,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash 202675942, now seen corresponding path program 1 times [2020-09-24 17:06:38,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:38,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123217267] [2020-09-24 17:06:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:38,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:39,489 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:39,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 17:06:39,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:06:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-09-24 17:06:39,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:06:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-09-24 17:06:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:06:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:39,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:39,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:39,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:39,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:39,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:39,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:39,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:39,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:39,595 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 17:06:39,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123217267] [2020-09-24 17:06:39,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:39,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:06:39,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789481977] [2020-09-24 17:06:39,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:06:39,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:39,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:06:39,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:06:39,600 INFO L87 Difference]: Start difference. First operand 678 states and 840 transitions. Second operand 4 states. [2020-09-24 17:06:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:39,856 INFO L93 Difference]: Finished difference Result 1289 states and 1634 transitions. [2020-09-24 17:06:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:06:39,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-24 17:06:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:39,862 INFO L225 Difference]: With dead ends: 1289 [2020-09-24 17:06:39,862 INFO L226 Difference]: Without dead ends: 755 [2020-09-24 17:06:39,864 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 17:06:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-09-24 17:06:39,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 735. [2020-09-24 17:06:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-09-24 17:06:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 910 transitions. [2020-09-24 17:06:39,884 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 910 transitions. Word has length 164 [2020-09-24 17:06:39,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:39,885 INFO L479 AbstractCegarLoop]: Abstraction has 735 states and 910 transitions. [2020-09-24 17:06:39,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:06:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 910 transitions. [2020-09-24 17:06:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 17:06:39,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:39,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:39,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:06:39,889 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash -190925100, now seen corresponding path program 1 times [2020-09-24 17:06:39,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:39,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588264171] [2020-09-24 17:06:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 17:06:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 17:06:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-09-24 17:06:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:06:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:06:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-24 17:06:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:41,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:06:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:41,616 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 17:06:41,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588264171] [2020-09-24 17:06:41,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:41,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:06:41,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714559297] [2020-09-24 17:06:41,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:06:41,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:41,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:06:41,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:06:41,628 INFO L87 Difference]: Start difference. First operand 735 states and 910 transitions. Second operand 6 states. [2020-09-24 17:06:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:41,874 INFO L93 Difference]: Finished difference Result 1393 states and 1760 transitions. [2020-09-24 17:06:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:06:41,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-24 17:06:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:41,880 INFO L225 Difference]: With dead ends: 1393 [2020-09-24 17:06:41,881 INFO L226 Difference]: Without dead ends: 802 [2020-09-24 17:06:41,882 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 17:06:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-09-24 17:06:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 796. [2020-09-24 17:06:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-09-24 17:06:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 989 transitions. [2020-09-24 17:06:41,911 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 989 transitions. Word has length 165 [2020-09-24 17:06:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:41,911 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 989 transitions. [2020-09-24 17:06:41,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:06:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 989 transitions. [2020-09-24 17:06:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 17:06:41,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:41,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:41,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:06:41,916 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:41,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1143844992, now seen corresponding path program 1 times [2020-09-24 17:06:41,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:41,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51834975] [2020-09-24 17:06:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 17:06:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:06:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-09-24 17:06:42,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-24 17:06:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:06:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:42,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:42,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:42,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:42,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:42,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:42,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:42,914 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 17:06:42,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51834975] [2020-09-24 17:06:42,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:42,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:42,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076644850] [2020-09-24 17:06:42,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:42,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:42,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:42,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:42,918 INFO L87 Difference]: Start difference. First operand 796 states and 989 transitions. Second operand 3 states. [2020-09-24 17:06:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:42,975 INFO L93 Difference]: Finished difference Result 2097 states and 2666 transitions. [2020-09-24 17:06:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:42,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-09-24 17:06:42,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:42,985 INFO L225 Difference]: With dead ends: 2097 [2020-09-24 17:06:42,985 INFO L226 Difference]: Without dead ends: 1445 [2020-09-24 17:06:42,987 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 17:06:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-09-24 17:06:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1124. [2020-09-24 17:06:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2020-09-24 17:06:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1413 transitions. [2020-09-24 17:06:43,044 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1413 transitions. Word has length 165 [2020-09-24 17:06:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:43,045 INFO L479 AbstractCegarLoop]: Abstraction has 1124 states and 1413 transitions. [2020-09-24 17:06:43,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1413 transitions. [2020-09-24 17:06:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 17:06:43,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:43,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:43,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:06:43,049 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:43,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1205884606, now seen corresponding path program 1 times [2020-09-24 17:06:43,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:43,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269918403] [2020-09-24 17:06:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:43,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:43,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 17:06:43,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:06:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-24 17:06:43,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:06:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:06:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 17:06:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:43,628 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:43,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:43,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:43,683 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 17:06:43,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269918403] [2020-09-24 17:06:43,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:43,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:06:43,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540494130] [2020-09-24 17:06:43,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:06:43,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:43,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:06:43,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:06:43,686 INFO L87 Difference]: Start difference. First operand 1124 states and 1413 transitions. Second operand 6 states. [2020-09-24 17:06:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:44,005 INFO L93 Difference]: Finished difference Result 2209 states and 2830 transitions. [2020-09-24 17:06:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:06:44,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-24 17:06:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:44,015 INFO L225 Difference]: With dead ends: 2209 [2020-09-24 17:06:44,015 INFO L226 Difference]: Without dead ends: 1230 [2020-09-24 17:06:44,018 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 17:06:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-09-24 17:06:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1195. [2020-09-24 17:06:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-09-24 17:06:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1503 transitions. [2020-09-24 17:06:44,078 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1503 transitions. Word has length 165 [2020-09-24 17:06:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:44,079 INFO L479 AbstractCegarLoop]: Abstraction has 1195 states and 1503 transitions. [2020-09-24 17:06:44,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:06:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1503 transitions. [2020-09-24 17:06:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 17:06:44,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:44,081 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 17:06:44,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:06:44,081 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash -790491328, now seen corresponding path program 1 times [2020-09-24 17:06:44,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:44,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083294089] [2020-09-24 17:06:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:44,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 17:06:44,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:06:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-09-24 17:06:44,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-24 17:06:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:06:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:44,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,896 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:44,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:44,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:44,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:44,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:44,959 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 17:06:44,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083294089] [2020-09-24 17:06:44,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:44,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:44,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204332854] [2020-09-24 17:06:44,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:44,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:44,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:44,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:44,964 INFO L87 Difference]: Start difference. First operand 1195 states and 1503 transitions. Second operand 3 states. [2020-09-24 17:06:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,107 INFO L93 Difference]: Finished difference Result 2293 states and 2908 transitions. [2020-09-24 17:06:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-24 17:06:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,116 INFO L225 Difference]: With dead ends: 2293 [2020-09-24 17:06:45,116 INFO L226 Difference]: Without dead ends: 1243 [2020-09-24 17:06:45,119 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 17:06:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-09-24 17:06:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1243. [2020-09-24 17:06:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-09-24 17:06:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1551 transitions. [2020-09-24 17:06:45,170 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1551 transitions. Word has length 168 [2020-09-24 17:06:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,171 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1551 transitions. [2020-09-24 17:06:45,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1551 transitions. [2020-09-24 17:06:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 17:06:45,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,176 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 17:06:45,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:06:45,177 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash 261232412, now seen corresponding path program 1 times [2020-09-24 17:06:45,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274260643] [2020-09-24 17:06:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 17:06:45,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:06:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-24 17:06:45,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:06:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:06:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-24 17:06:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:45,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:45,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:45,907 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 17:06:45,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274260643] [2020-09-24 17:06:45,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:06:45,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656226902] [2020-09-24 17:06:45,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:06:45,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:06:45,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:06:45,911 INFO L87 Difference]: Start difference. First operand 1243 states and 1551 transitions. Second operand 7 states. [2020-09-24 17:06:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,395 INFO L93 Difference]: Finished difference Result 2804 states and 3617 transitions. [2020-09-24 17:06:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:06:46,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-24 17:06:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,403 INFO L225 Difference]: With dead ends: 2804 [2020-09-24 17:06:46,404 INFO L226 Difference]: Without dead ends: 1658 [2020-09-24 17:06:46,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:06:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-09-24 17:06:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1399. [2020-09-24 17:06:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2020-09-24 17:06:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1756 transitions. [2020-09-24 17:06:46,460 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1756 transitions. Word has length 169 [2020-09-24 17:06:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,460 INFO L479 AbstractCegarLoop]: Abstraction has 1399 states and 1756 transitions. [2020-09-24 17:06:46,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:06:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1756 transitions. [2020-09-24 17:06:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 17:06:46,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,465 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] [2020-09-24 17:06:46,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:06:46,466 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1251905473, now seen corresponding path program 1 times [2020-09-24 17:06:46,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849993167] [2020-09-24 17:06:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-24 17:06:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:06:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-24 17:06:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 17:06:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:46,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:46,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849993167] [2020-09-24 17:06:46,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304147919] [2020-09-24 17:06:46,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,996 INFO L87 Difference]: Start difference. First operand 1399 states and 1756 transitions. Second operand 3 states. [2020-09-24 17:06:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:47,260 INFO L93 Difference]: Finished difference Result 2888 states and 3732 transitions. [2020-09-24 17:06:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:47,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-09-24 17:06:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:47,268 INFO L225 Difference]: With dead ends: 2888 [2020-09-24 17:06:47,268 INFO L226 Difference]: Without dead ends: 1607 [2020-09-24 17:06:47,271 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 17:06:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-09-24 17:06:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1509. [2020-09-24 17:06:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-09-24 17:06:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1923 transitions. [2020-09-24 17:06:47,324 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1923 transitions. Word has length 188 [2020-09-24 17:06:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:47,324 INFO L479 AbstractCegarLoop]: Abstraction has 1509 states and 1923 transitions. [2020-09-24 17:06:47,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1923 transitions. [2020-09-24 17:06:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 17:06:47,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:47,329 INFO L422 BasicCegarLoop]: trace histogram [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 17:06:47,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:06:47,329 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -993379569, now seen corresponding path program 1 times [2020-09-24 17:06:47,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:47,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612299110] [2020-09-24 17:06:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,022 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 17:06:48,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:06:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-24 17:06:48,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-24 17:06:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 17:06:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:48,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:48,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:48,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612299110] [2020-09-24 17:06:48,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:48,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:48,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486562260] [2020-09-24 17:06:48,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:48,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:48,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:48,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:48,127 INFO L87 Difference]: Start difference. First operand 1509 states and 1923 transitions. Second operand 3 states. [2020-09-24 17:06:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:48,174 INFO L93 Difference]: Finished difference Result 2825 states and 3649 transitions. [2020-09-24 17:06:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:48,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-09-24 17:06:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:48,182 INFO L225 Difference]: With dead ends: 2825 [2020-09-24 17:06:48,182 INFO L226 Difference]: Without dead ends: 1509 [2020-09-24 17:06:48,185 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 17:06:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2020-09-24 17:06:48,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2020-09-24 17:06:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-09-24 17:06:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1898 transitions. [2020-09-24 17:06:48,238 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1898 transitions. Word has length 189 [2020-09-24 17:06:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:48,239 INFO L479 AbstractCegarLoop]: Abstraction has 1509 states and 1898 transitions. [2020-09-24 17:06:48,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1898 transitions. [2020-09-24 17:06:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 17:06:48,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:48,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:48,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:06:48,243 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:48,244 INFO L82 PathProgramCache]: Analyzing trace with hash 569080264, now seen corresponding path program 1 times [2020-09-24 17:06:48,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:48,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659359311] [2020-09-24 17:06:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,936 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 17:06:48,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:06:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-09-24 17:06:48,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-24 17:06:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:06:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:48,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:48,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:48,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:48,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659359311] [2020-09-24 17:06:48,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:48,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:48,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612502774] [2020-09-24 17:06:48,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:48,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:48,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:49,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:49,000 INFO L87 Difference]: Start difference. First operand 1509 states and 1898 transitions. Second operand 3 states. [2020-09-24 17:06:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:49,071 INFO L93 Difference]: Finished difference Result 2846 states and 3623 transitions. [2020-09-24 17:06:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:49,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2020-09-24 17:06:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:49,080 INFO L225 Difference]: With dead ends: 2846 [2020-09-24 17:06:49,081 INFO L226 Difference]: Without dead ends: 1530 [2020-09-24 17:06:49,087 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 17:06:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-09-24 17:06:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1527. [2020-09-24 17:06:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2020-09-24 17:06:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 1894 transitions. [2020-09-24 17:06:49,142 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 1894 transitions. Word has length 190 [2020-09-24 17:06:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:49,143 INFO L479 AbstractCegarLoop]: Abstraction has 1527 states and 1894 transitions. [2020-09-24 17:06:49,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 1894 transitions. [2020-09-24 17:06:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 17:06:49,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:49,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:49,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:06:49,148 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:49,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1571678609, now seen corresponding path program 1 times [2020-09-24 17:06:49,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:49,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885432595] [2020-09-24 17:06:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:49,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:51,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-24 17:06:51,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:06:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1949 [2020-09-24 17:06:51,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-24 17:06:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:06:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:51,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:51,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:51,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:51,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:06:51,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:51,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:51,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885432595] [2020-09-24 17:06:51,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:51,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:51,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866071301] [2020-09-24 17:06:51,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:51,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:51,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:51,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:51,200 INFO L87 Difference]: Start difference. First operand 1527 states and 1894 transitions. Second operand 3 states. [2020-09-24 17:06:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:51,463 INFO L93 Difference]: Finished difference Result 3246 states and 4149 transitions. [2020-09-24 17:06:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:51,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-09-24 17:06:51,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:51,473 INFO L225 Difference]: With dead ends: 3246 [2020-09-24 17:06:51,473 INFO L226 Difference]: Without dead ends: 1903 [2020-09-24 17:06:51,476 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 17:06:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-09-24 17:06:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1727. [2020-09-24 17:06:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-09-24 17:06:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2220 transitions. [2020-09-24 17:06:51,543 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2220 transitions. Word has length 194 [2020-09-24 17:06:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:51,543 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2220 transitions. [2020-09-24 17:06:51,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:51,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2220 transitions. [2020-09-24 17:06:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 17:06:51,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:51,549 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] [2020-09-24 17:06:51,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:06:51,550 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1364788094, now seen corresponding path program 1 times [2020-09-24 17:06:51,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:51,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823328543] [2020-09-24 17:06:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:53,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 17:06:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 17:06:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-09-24 17:06:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 17:06:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 17:06:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:53,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:53,340 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:53,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:53,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:53,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:53,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823328543] [2020-09-24 17:06:53,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:53,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:53,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127420855] [2020-09-24 17:06:53,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:53,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:53,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:53,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:53,371 INFO L87 Difference]: Start difference. First operand 1727 states and 2220 transitions. Second operand 3 states. [2020-09-24 17:06:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:53,610 INFO L93 Difference]: Finished difference Result 3576 states and 4654 transitions. [2020-09-24 17:06:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:53,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-09-24 17:06:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:53,620 INFO L225 Difference]: With dead ends: 3576 [2020-09-24 17:06:53,620 INFO L226 Difference]: Without dead ends: 1985 [2020-09-24 17:06:53,627 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 17:06:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2020-09-24 17:06:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1819. [2020-09-24 17:06:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2020-09-24 17:06:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2295 transitions. [2020-09-24 17:06:53,697 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2295 transitions. Word has length 197 [2020-09-24 17:06:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:53,697 INFO L479 AbstractCegarLoop]: Abstraction has 1819 states and 2295 transitions. [2020-09-24 17:06:53,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2295 transitions. [2020-09-24 17:06:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 17:06:53,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:53,702 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 17:06:53,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:06:53,702 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:53,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854146, now seen corresponding path program 1 times [2020-09-24 17:06:53,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:53,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339441695] [2020-09-24 17:06:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:54,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 17:06:54,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:06:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 17:06:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:06:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 17:06:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:06:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:54,788 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:54,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:54,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:54,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:54,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339441695] [2020-09-24 17:06:54,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:54,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:06:54,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661479216] [2020-09-24 17:06:54,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:06:54,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:54,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:06:54,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:06:54,822 INFO L87 Difference]: Start difference. First operand 1819 states and 2295 transitions. Second operand 4 states. [2020-09-24 17:06:55,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:55,259 INFO L93 Difference]: Finished difference Result 5186 states and 6652 transitions. [2020-09-24 17:06:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:06:55,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-24 17:06:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:55,275 INFO L225 Difference]: With dead ends: 5186 [2020-09-24 17:06:55,275 INFO L226 Difference]: Without dead ends: 3560 [2020-09-24 17:06:55,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 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 17:06:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2020-09-24 17:06:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 1831. [2020-09-24 17:06:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2020-09-24 17:06:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2307 transitions. [2020-09-24 17:06:55,362 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2307 transitions. Word has length 199 [2020-09-24 17:06:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:55,362 INFO L479 AbstractCegarLoop]: Abstraction has 1831 states and 2307 transitions. [2020-09-24 17:06:55,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:06:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2307 transitions. [2020-09-24 17:06:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 17:06:55,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:55,366 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 17:06:55,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:06:55,366 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:55,367 INFO L82 PathProgramCache]: Analyzing trace with hash -455131385, now seen corresponding path program 1 times [2020-09-24 17:06:55,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:55,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52165346] [2020-09-24 17:06:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:55,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:55,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:55,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 17:06:55,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:06:55,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-24 17:06:55,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:06:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-24 17:06:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 17:06:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:55,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:55,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:55,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:55,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:55,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:55,851 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 17:06:55,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52165346] [2020-09-24 17:06:55,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:55,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:06:55,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093437802] [2020-09-24 17:06:55,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:06:55,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:55,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:06:55,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:06:55,853 INFO L87 Difference]: Start difference. First operand 1831 states and 2307 transitions. Second operand 4 states. [2020-09-24 17:06:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:56,021 INFO L93 Difference]: Finished difference Result 6756 states and 8629 transitions. [2020-09-24 17:06:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:06:56,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-09-24 17:06:56,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:56,053 INFO L225 Difference]: With dead ends: 6756 [2020-09-24 17:06:56,053 INFO L226 Difference]: Without dead ends: 5118 [2020-09-24 17:06:56,062 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 17:06:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2020-09-24 17:06:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 3444. [2020-09-24 17:06:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3444 states. [2020-09-24 17:06:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 4330 transitions. [2020-09-24 17:06:56,334 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 4330 transitions. Word has length 200 [2020-09-24 17:06:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:56,335 INFO L479 AbstractCegarLoop]: Abstraction has 3444 states and 4330 transitions. [2020-09-24 17:06:56,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:06:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 4330 transitions. [2020-09-24 17:06:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 17:06:56,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:56,342 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 17:06:56,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:06:56,342 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:56,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:56,343 INFO L82 PathProgramCache]: Analyzing trace with hash -912264382, now seen corresponding path program 1 times [2020-09-24 17:06:56,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:56,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796584070] [2020-09-24 17:06:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:56,491 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:56,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 17:06:56,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:56,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 17:06:56,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-24 17:06:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:06:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:56,528 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:56,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:56,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:56,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:56,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:56,560 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 17:06:56,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796584070] [2020-09-24 17:06:56,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:56,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:56,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295225838] [2020-09-24 17:06:56,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:56,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:56,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:56,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:56,565 INFO L87 Difference]: Start difference. First operand 3444 states and 4330 transitions. Second operand 3 states. [2020-09-24 17:06:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:56,685 INFO L93 Difference]: Finished difference Result 6946 states and 8752 transitions. [2020-09-24 17:06:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:56,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-24 17:06:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:56,717 INFO L225 Difference]: With dead ends: 6946 [2020-09-24 17:06:56,718 INFO L226 Difference]: Without dead ends: 3751 [2020-09-24 17:06:56,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2020-09-24 17:06:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3749. [2020-09-24 17:06:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3749 states. [2020-09-24 17:06:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 4670 transitions. [2020-09-24 17:06:56,861 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 4670 transitions. Word has length 200 [2020-09-24 17:06:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:56,861 INFO L479 AbstractCegarLoop]: Abstraction has 3749 states and 4670 transitions. [2020-09-24 17:06:56,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:56,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 4670 transitions. [2020-09-24 17:06:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 17:06:56,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:56,865 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 17:06:56,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 17:06:56,865 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:56,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-24 17:06:56,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:56,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230410173] [2020-09-24 17:06:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:06:56,893 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:06:56,893 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:06:56,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 17:06:56,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:06:56 BoogieIcfgContainer [2020-09-24 17:06:56,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:06:56,958 INFO L168 Benchmark]: Toolchain (without parser) took 24170.15 ms. Allocated memory was 141.0 MB in the beginning and 544.7 MB in the end (delta: 403.7 MB). Free memory was 103.7 MB in the beginning and 302.5 MB in the end (delta: -198.8 MB). Peak memory consumption was 204.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:56,966 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 17:06:56,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.76 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 179.2 MB in the end (delta: -75.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:56,972 INFO L168 Benchmark]: Boogie Preprocessor took 66.69 ms. Allocated memory is still 203.9 MB. Free memory was 179.2 MB in the beginning and 176.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:56,973 INFO L168 Benchmark]: RCFGBuilder took 1059.88 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 105.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:56,975 INFO L168 Benchmark]: TraceAbstraction took 22453.07 ms. Allocated memory was 203.9 MB in the beginning and 544.7 MB in the end (delta: 340.8 MB). Free memory was 105.0 MB in the beginning and 302.5 MB in the end (delta: -197.5 MB). Peak memory consumption was 143.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:56,981 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 580.76 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 179.2 MB in the end (delta: -75.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.69 ms. Allocated memory is still 203.9 MB. Free memory was 179.2 MB in the beginning and 176.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1059.88 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 105.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22453.07 ms. Allocated memory was 203.9 MB in the beginning and 544.7 MB in the end (delta: 340.8 MB). Free memory was 105.0 MB in the beginning and 302.5 MB in the end (delta: -197.5 MB). Peak memory consumption was 143.3 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: 22.3s, OverallIterations: 17, TraceHistogramMax: 2, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8450 SDtfs, 6684 SDslu, 8995 SDs, 0 SdLazy, 1637 SolverSat, 262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3749occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 4502 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 3075 NumberOfCodeBlocks, 3075 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2858 ConstructedInterpolants, 0 QuantifiedInterpolants, 825914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 87/87 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...