/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:25:25,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:25,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:25,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:25,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:25,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:25,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:25,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:25,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:25,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:25,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:25,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:25,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:25,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:25,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:25,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:25,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:25,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:25,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:25,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:25,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:25,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:25,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:25,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:25,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:25,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:25,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:25,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:25,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:25,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:25,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:25,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:25,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:25,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:25,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:25,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:25,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:25,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:25,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:25,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:25,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:25,417 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 [2020-09-21 12:25:25,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:25,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:25,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:25,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:25,463 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:25,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:25,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:25,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:25,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:25,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:25,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:25,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:25,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:25,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:25,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:25,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:25,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:25,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:25,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:25,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:25,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:25,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:25,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:25,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:25,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:25,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:25,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:25,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:25,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:25,471 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:25,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:25,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:25,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:25,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:25,987 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:25,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-21 12:25:26,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/775c20547/12861170217c496f92ebbfde3c0e783f/FLAGa77112c89 [2020-09-21 12:25:26,715 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:26,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-21 12:25:26,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/775c20547/12861170217c496f92ebbfde3c0e783f/FLAGa77112c89 [2020-09-21 12:25:26,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/775c20547/12861170217c496f92ebbfde3c0e783f [2020-09-21 12:25:26,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:26,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:26,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:26,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:26,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:26,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:26" (1/1) ... [2020-09-21 12:25:26,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784ce183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:26, skipping insertion in model container [2020-09-21 12:25:26,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:26" (1/1) ... [2020-09-21 12:25:26,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:27,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:27,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:27,349 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:27,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:27,549 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:27,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27 WrapperNode [2020-09-21 12:25:27,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:27,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:27,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:27,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:27,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (1/1) ... [2020-09-21 12:25:27,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (1/1) ... [2020-09-21 12:25:27,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (1/1) ... [2020-09-21 12:25:27,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (1/1) ... [2020-09-21 12:25:27,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (1/1) ... [2020-09-21 12:25:27,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (1/1) ... [2020-09-21 12:25:27,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (1/1) ... [2020-09-21 12:25:27,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:27,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:27,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:27,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:27,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (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 [2020-09-21 12:25:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-21 12:25:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:25:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-21 12:25:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 12:25:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-21 12:25:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:27,952 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:28,589 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-21 12:25:28,590 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-21 12:25:28,604 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:28,604 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:25:28,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:28 BoogieIcfgContainer [2020-09-21 12:25:28,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:28,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:28,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:28,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:28,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:26" (1/3) ... [2020-09-21 12:25:28,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4818e80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:28, skipping insertion in model container [2020-09-21 12:25:28,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:27" (2/3) ... [2020-09-21 12:25:28,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4818e80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:28, skipping insertion in model container [2020-09-21 12:25:28,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:28" (3/3) ... [2020-09-21 12:25:28,622 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-21 12:25:28,634 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:28,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:28,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:28,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:28,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:28,700 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:28,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:28,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:28,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:28,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:28,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-09-21 12:25:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:25:28,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:28,739 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] [2020-09-21 12:25:28,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:28,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-09-21 12:25:28,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:28,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336471804] [2020-09-21 12:25:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:29,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:29,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-09-21 12:25:29,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:25:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:25:29,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:25:29,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:29,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:29,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:29,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:29,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336471804] [2020-09-21 12:25:29,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:29,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:25:29,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563776062] [2020-09-21 12:25:29,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:25:29,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:29,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:25:29,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:25:29,931 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-09-21 12:25:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:30,288 INFO L93 Difference]: Finished difference Result 379 states and 645 transitions. [2020-09-21 12:25:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:30,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-21 12:25:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:30,311 INFO L225 Difference]: With dead ends: 379 [2020-09-21 12:25:30,311 INFO L226 Difference]: Without dead ends: 186 [2020-09-21 12:25:30,318 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 [2020-09-21 12:25:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-21 12:25:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2020-09-21 12:25:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 12:25:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 276 transitions. [2020-09-21 12:25:30,398 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 276 transitions. Word has length 33 [2020-09-21 12:25:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:30,399 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 276 transitions. [2020-09-21 12:25:30,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:25:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 276 transitions. [2020-09-21 12:25:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 12:25:30,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:30,402 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] [2020-09-21 12:25:30,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:25:30,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:30,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-09-21 12:25:30,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:30,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884230556] [2020-09-21 12:25:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:25:31,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:25:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:25:31,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:25:31,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:31,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:31,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:31,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:31,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:31,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884230556] [2020-09-21 12:25:31,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:31,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:31,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979206861] [2020-09-21 12:25:31,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:31,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:31,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:31,513 INFO L87 Difference]: Start difference. First operand 178 states and 276 transitions. Second operand 3 states. [2020-09-21 12:25:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:31,874 INFO L93 Difference]: Finished difference Result 402 states and 636 transitions. [2020-09-21 12:25:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:31,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-21 12:25:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:31,878 INFO L225 Difference]: With dead ends: 402 [2020-09-21 12:25:31,878 INFO L226 Difference]: Without dead ends: 237 [2020-09-21 12:25:31,880 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 [2020-09-21 12:25:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-21 12:25:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 213. [2020-09-21 12:25:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-21 12:25:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 333 transitions. [2020-09-21 12:25:31,898 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 333 transitions. Word has length 34 [2020-09-21 12:25:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:31,898 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 333 transitions. [2020-09-21 12:25:31,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 333 transitions. [2020-09-21 12:25:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 12:25:31,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:31,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:31,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:25:31,901 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:31,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:31,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-09-21 12:25:31,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:31,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379701403] [2020-09-21 12:25:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:32,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:25:32,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-21 12:25:32,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:25:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:25:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:32,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:32,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:32,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:32,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:32,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379701403] [2020-09-21 12:25:32,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:32,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:25:32,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258816336] [2020-09-21 12:25:32,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:25:32,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:32,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:25:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:25:32,379 INFO L87 Difference]: Start difference. First operand 213 states and 333 transitions. Second operand 4 states. [2020-09-21 12:25:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:32,623 INFO L93 Difference]: Finished difference Result 467 states and 723 transitions. [2020-09-21 12:25:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:32,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-21 12:25:32,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:32,626 INFO L225 Difference]: With dead ends: 467 [2020-09-21 12:25:32,626 INFO L226 Difference]: Without dead ends: 267 [2020-09-21 12:25:32,627 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 [2020-09-21 12:25:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-21 12:25:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 231. [2020-09-21 12:25:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-21 12:25:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 358 transitions. [2020-09-21 12:25:32,642 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 358 transitions. Word has length 34 [2020-09-21 12:25:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:32,643 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 358 transitions. [2020-09-21 12:25:32,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:25:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 358 transitions. [2020-09-21 12:25:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 12:25:32,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:32,645 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] [2020-09-21 12:25:32,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:25:32,646 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:32,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:32,646 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-09-21 12:25:32,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:32,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138662220] [2020-09-21 12:25:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:25:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-09-21 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:25:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:33,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:33,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:33,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:33,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138662220] [2020-09-21 12:25:33,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:33,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:33,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140109323] [2020-09-21 12:25:33,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:33,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:33,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:33,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:33,393 INFO L87 Difference]: Start difference. First operand 231 states and 358 transitions. Second operand 3 states. [2020-09-21 12:25:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:33,641 INFO L93 Difference]: Finished difference Result 495 states and 785 transitions. [2020-09-21 12:25:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:33,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-21 12:25:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:33,644 INFO L225 Difference]: With dead ends: 495 [2020-09-21 12:25:33,644 INFO L226 Difference]: Without dead ends: 229 [2020-09-21 12:25:33,645 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 [2020-09-21 12:25:33,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-21 12:25:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-09-21 12:25:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-21 12:25:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 353 transitions. [2020-09-21 12:25:33,658 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 353 transitions. Word has length 34 [2020-09-21 12:25:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:33,659 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 353 transitions. [2020-09-21 12:25:33,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 353 transitions. [2020-09-21 12:25:33,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 12:25:33,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:33,661 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] [2020-09-21 12:25:33,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:25:33,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:33,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2066548327, now seen corresponding path program 1 times [2020-09-21 12:25:33,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:33,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691628310] [2020-09-21 12:25:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:25:34,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:25:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:25:34,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-21 12:25:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:34,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:34,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691628310] [2020-09-21 12:25:34,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:34,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:34,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802136395] [2020-09-21 12:25:34,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:34,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:34,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:34,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:34,721 INFO L87 Difference]: Start difference. First operand 229 states and 353 transitions. Second operand 3 states. [2020-09-21 12:25:34,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:34,951 INFO L93 Difference]: Finished difference Result 497 states and 781 transitions. [2020-09-21 12:25:34,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:34,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-21 12:25:34,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:34,954 INFO L225 Difference]: With dead ends: 497 [2020-09-21 12:25:34,954 INFO L226 Difference]: Without dead ends: 281 [2020-09-21 12:25:34,957 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 [2020-09-21 12:25:34,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-21 12:25:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 256. [2020-09-21 12:25:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-21 12:25:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 396 transitions. [2020-09-21 12:25:34,974 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 396 transitions. Word has length 35 [2020-09-21 12:25:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:34,974 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 396 transitions. [2020-09-21 12:25:34,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 396 transitions. [2020-09-21 12:25:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:25:34,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:34,978 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] [2020-09-21 12:25:34,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:25:34,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:34,979 INFO L82 PathProgramCache]: Analyzing trace with hash 119357275, now seen corresponding path program 1 times [2020-09-21 12:25:34,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:34,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352008258] [2020-09-21 12:25:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:35,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 12:25:35,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-21 12:25:35,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:35,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:35,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:35,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352008258] [2020-09-21 12:25:35,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:35,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:25:35,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552013382] [2020-09-21 12:25:35,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:25:35,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:35,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:25:35,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:35,635 INFO L87 Difference]: Start difference. First operand 256 states and 396 transitions. Second operand 5 states. [2020-09-21 12:25:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:35,949 INFO L93 Difference]: Finished difference Result 583 states and 920 transitions. [2020-09-21 12:25:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:35,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-09-21 12:25:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:35,952 INFO L225 Difference]: With dead ends: 583 [2020-09-21 12:25:35,953 INFO L226 Difference]: Without dead ends: 306 [2020-09-21 12:25:35,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-21 12:25:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 301. [2020-09-21 12:25:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-09-21 12:25:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 453 transitions. [2020-09-21 12:25:35,964 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 453 transitions. Word has length 47 [2020-09-21 12:25:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:35,965 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 453 transitions. [2020-09-21 12:25:35,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:25:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 453 transitions. [2020-09-21 12:25:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 12:25:35,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:35,969 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:25:35,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:25:35,969 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:35,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1788282112, now seen corresponding path program 1 times [2020-09-21 12:25:35,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:35,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902081550] [2020-09-21 12:25:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:25:36,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-21 12:25:36,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 12:25:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:25:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:36,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902081550] [2020-09-21 12:25:36,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:36,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:36,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276874086] [2020-09-21 12:25:36,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:36,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:36,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:36,316 INFO L87 Difference]: Start difference. First operand 301 states and 453 transitions. Second operand 3 states. [2020-09-21 12:25:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:36,481 INFO L93 Difference]: Finished difference Result 612 states and 923 transitions. [2020-09-21 12:25:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:36,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-09-21 12:25:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:36,485 INFO L225 Difference]: With dead ends: 612 [2020-09-21 12:25:36,485 INFO L226 Difference]: Without dead ends: 324 [2020-09-21 12:25:36,487 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 [2020-09-21 12:25:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-09-21 12:25:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2020-09-21 12:25:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-21 12:25:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 475 transitions. [2020-09-21 12:25:36,504 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 475 transitions. Word has length 64 [2020-09-21 12:25:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:36,506 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 475 transitions. [2020-09-21 12:25:36,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 475 transitions. [2020-09-21 12:25:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-21 12:25:36,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:36,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:36,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:25:36,509 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1351016732, now seen corresponding path program 1 times [2020-09-21 12:25:36,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:36,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989716429] [2020-09-21 12:25:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:25:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-21 12:25:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 12:25:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:37,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:37,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:37,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-21 12:25:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:25:37,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989716429] [2020-09-21 12:25:37,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:37,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:25:37,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303263743] [2020-09-21 12:25:37,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:25:37,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:37,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:25:37,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:37,172 INFO L87 Difference]: Start difference. First operand 320 states and 475 transitions. Second operand 5 states. [2020-09-21 12:25:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:37,564 INFO L93 Difference]: Finished difference Result 665 states and 984 transitions. [2020-09-21 12:25:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:37,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-09-21 12:25:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:37,570 INFO L225 Difference]: With dead ends: 665 [2020-09-21 12:25:37,570 INFO L226 Difference]: Without dead ends: 345 [2020-09-21 12:25:37,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-09-21 12:25:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 320. [2020-09-21 12:25:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-21 12:25:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 475 transitions. [2020-09-21 12:25:37,588 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 475 transitions. Word has length 76 [2020-09-21 12:25:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:37,589 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 475 transitions. [2020-09-21 12:25:37,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:25:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 475 transitions. [2020-09-21 12:25:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 12:25:37,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:37,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:37,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:25:37,592 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:37,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:37,593 INFO L82 PathProgramCache]: Analyzing trace with hash 898909078, now seen corresponding path program 1 times [2020-09-21 12:25:37,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:37,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684909596] [2020-09-21 12:25:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-21 12:25:37,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-21 12:25:37,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 12:25:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 12:25:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:37,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:37,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:25:38,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684909596] [2020-09-21 12:25:38,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:38,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:38,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094489978] [2020-09-21 12:25:38,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:38,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:38,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:38,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:38,012 INFO L87 Difference]: Start difference. First operand 320 states and 475 transitions. Second operand 3 states. [2020-09-21 12:25:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:38,228 INFO L93 Difference]: Finished difference Result 674 states and 1012 transitions. [2020-09-21 12:25:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:38,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-21 12:25:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:38,231 INFO L225 Difference]: With dead ends: 674 [2020-09-21 12:25:38,232 INFO L226 Difference]: Without dead ends: 367 [2020-09-21 12:25:38,234 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 [2020-09-21 12:25:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-09-21 12:25:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2020-09-21 12:25:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-09-21 12:25:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 527 transitions. [2020-09-21 12:25:38,246 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 527 transitions. Word has length 86 [2020-09-21 12:25:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:38,247 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 527 transitions. [2020-09-21 12:25:38,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 527 transitions. [2020-09-21 12:25:38,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 12:25:38,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:38,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:38,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:25:38,253 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:38,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:38,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1322555800, now seen corresponding path program 1 times [2020-09-21 12:25:38,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:38,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130255417] [2020-09-21 12:25:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-21 12:25:38,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-21 12:25:38,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 12:25:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:25:38,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:38,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:38,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:25:38,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130255417] [2020-09-21 12:25:38,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:38,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:38,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759464522] [2020-09-21 12:25:38,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:38,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:38,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:38,638 INFO L87 Difference]: Start difference. First operand 363 states and 527 transitions. Second operand 3 states. [2020-09-21 12:25:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:38,840 INFO L93 Difference]: Finished difference Result 744 states and 1084 transitions. [2020-09-21 12:25:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:38,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-21 12:25:38,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:38,844 INFO L225 Difference]: With dead ends: 744 [2020-09-21 12:25:38,844 INFO L226 Difference]: Without dead ends: 394 [2020-09-21 12:25:38,846 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 [2020-09-21 12:25:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-21 12:25:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 389. [2020-09-21 12:25:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-09-21 12:25:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 559 transitions. [2020-09-21 12:25:38,872 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 559 transitions. Word has length 86 [2020-09-21 12:25:38,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:38,873 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 559 transitions. [2020-09-21 12:25:38,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 559 transitions. [2020-09-21 12:25:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-21 12:25:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:38,877 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:38,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:25:38,878 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:38,878 INFO L82 PathProgramCache]: Analyzing trace with hash 842224241, now seen corresponding path program 1 times [2020-09-21 12:25:38,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:38,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089219605] [2020-09-21 12:25:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:25:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:25:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-21 12:25:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 12:25:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:25:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:39,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:39,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:25:39,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089219605] [2020-09-21 12:25:39,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:39,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:39,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452629250] [2020-09-21 12:25:39,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:39,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:39,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:39,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:39,954 INFO L87 Difference]: Start difference. First operand 389 states and 559 transitions. Second operand 3 states. [2020-09-21 12:25:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:40,186 INFO L93 Difference]: Finished difference Result 837 states and 1197 transitions. [2020-09-21 12:25:40,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:40,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-09-21 12:25:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:40,189 INFO L225 Difference]: With dead ends: 837 [2020-09-21 12:25:40,189 INFO L226 Difference]: Without dead ends: 458 [2020-09-21 12:25:40,190 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 [2020-09-21 12:25:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-09-21 12:25:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 440. [2020-09-21 12:25:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-09-21 12:25:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 618 transitions. [2020-09-21 12:25:40,206 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 618 transitions. Word has length 100 [2020-09-21 12:25:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:40,206 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 618 transitions. [2020-09-21 12:25:40,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 618 transitions. [2020-09-21 12:25:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 12:25:40,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:40,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:40,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:25:40,209 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:40,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:40,209 INFO L82 PathProgramCache]: Analyzing trace with hash -11606276, now seen corresponding path program 1 times [2020-09-21 12:25:40,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:40,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100036503] [2020-09-21 12:25:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:25:40,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-21 12:25:40,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-21 12:25:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:25:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:40,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:40,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:40,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-21 12:25:40,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100036503] [2020-09-21 12:25:40,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:40,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:40,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606987665] [2020-09-21 12:25:40,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:40,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:40,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:40,583 INFO L87 Difference]: Start difference. First operand 440 states and 618 transitions. Second operand 3 states. [2020-09-21 12:25:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:40,769 INFO L93 Difference]: Finished difference Result 909 states and 1283 transitions. [2020-09-21 12:25:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:40,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-09-21 12:25:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:40,772 INFO L225 Difference]: With dead ends: 909 [2020-09-21 12:25:40,773 INFO L226 Difference]: Without dead ends: 482 [2020-09-21 12:25:40,775 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 [2020-09-21 12:25:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-21 12:25:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 468. [2020-09-21 12:25:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-09-21 12:25:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 652 transitions. [2020-09-21 12:25:40,792 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 652 transitions. Word has length 108 [2020-09-21 12:25:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:40,793 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 652 transitions. [2020-09-21 12:25:40,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 652 transitions. [2020-09-21 12:25:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-21 12:25:40,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:40,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:40,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:25:40,796 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:40,796 INFO L82 PathProgramCache]: Analyzing trace with hash 558356394, now seen corresponding path program 1 times [2020-09-21 12:25:40,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:40,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330158831] [2020-09-21 12:25:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:41,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-21 12:25:41,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:25:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-21 12:25:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:25:41,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:41,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:41,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:41,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-21 12:25:41,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330158831] [2020-09-21 12:25:41,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:41,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:41,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532951683] [2020-09-21 12:25:41,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:41,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:41,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:41,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:41,912 INFO L87 Difference]: Start difference. First operand 468 states and 652 transitions. Second operand 3 states. [2020-09-21 12:25:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:42,107 INFO L93 Difference]: Finished difference Result 962 states and 1347 transitions. [2020-09-21 12:25:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:42,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-09-21 12:25:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:42,111 INFO L225 Difference]: With dead ends: 962 [2020-09-21 12:25:42,111 INFO L226 Difference]: Without dead ends: 507 [2020-09-21 12:25:42,117 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 [2020-09-21 12:25:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-21 12:25:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 498. [2020-09-21 12:25:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-09-21 12:25:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 688 transitions. [2020-09-21 12:25:42,135 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 688 transitions. Word has length 135 [2020-09-21 12:25:42,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:42,136 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 688 transitions. [2020-09-21 12:25:42,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 688 transitions. [2020-09-21 12:25:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-21 12:25:42,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:42,138 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:42,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:25:42,139 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -663940454, now seen corresponding path program 1 times [2020-09-21 12:25:42,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:42,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540434144] [2020-09-21 12:25:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-21 12:25:43,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-21 12:25:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 12:25:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-21 12:25:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:43,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:43,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-09-21 12:25:43,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540434144] [2020-09-21 12:25:43,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:43,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:43,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426158041] [2020-09-21 12:25:43,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:43,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:43,278 INFO L87 Difference]: Start difference. First operand 498 states and 688 transitions. Second operand 3 states. [2020-09-21 12:25:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:43,435 INFO L93 Difference]: Finished difference Result 1468 states and 2030 transitions. [2020-09-21 12:25:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:43,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-09-21 12:25:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:43,441 INFO L225 Difference]: With dead ends: 1468 [2020-09-21 12:25:43,442 INFO L226 Difference]: Without dead ends: 983 [2020-09-21 12:25:43,443 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 [2020-09-21 12:25:43,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-09-21 12:25:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2020-09-21 12:25:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-09-21 12:25:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1338 transitions. [2020-09-21 12:25:43,475 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1338 transitions. Word has length 138 [2020-09-21 12:25:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:43,476 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1338 transitions. [2020-09-21 12:25:43,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1338 transitions. [2020-09-21 12:25:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-21 12:25:43,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:43,480 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:43,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:25:43,481 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:43,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1675057704, now seen corresponding path program 1 times [2020-09-21 12:25:43,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:43,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977179069] [2020-09-21 12:25:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-21 12:25:44,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:25:44,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-21 12:25:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:44,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:44,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:44,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:44,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-21 12:25:44,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977179069] [2020-09-21 12:25:44,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:44,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:44,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614540507] [2020-09-21 12:25:44,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:44,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:44,575 INFO L87 Difference]: Start difference. First operand 981 states and 1338 transitions. Second operand 3 states. [2020-09-21 12:25:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:44,641 INFO L93 Difference]: Finished difference Result 2903 states and 3954 transitions. [2020-09-21 12:25:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:44,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-09-21 12:25:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:44,653 INFO L225 Difference]: With dead ends: 2903 [2020-09-21 12:25:44,653 INFO L226 Difference]: Without dead ends: 1935 [2020-09-21 12:25:44,660 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 [2020-09-21 12:25:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-09-21 12:25:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 983. [2020-09-21 12:25:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-09-21 12:25:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1340 transitions. [2020-09-21 12:25:44,732 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1340 transitions. Word has length 138 [2020-09-21 12:25:44,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:44,733 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1340 transitions. [2020-09-21 12:25:44,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1340 transitions. [2020-09-21 12:25:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-21 12:25:44,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:44,737 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:44,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:25:44,737 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:44,738 INFO L82 PathProgramCache]: Analyzing trace with hash -2028146086, now seen corresponding path program 1 times [2020-09-21 12:25:44,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:44,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520012049] [2020-09-21 12:25:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-21 12:25:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-09-21 12:25:45,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-21 12:25:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:45,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-21 12:25:45,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520012049] [2020-09-21 12:25:45,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:45,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:45,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156043472] [2020-09-21 12:25:45,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:45,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:45,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:45,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:45,734 INFO L87 Difference]: Start difference. First operand 983 states and 1340 transitions. Second operand 3 states. [2020-09-21 12:25:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:45,826 INFO L93 Difference]: Finished difference Result 2903 states and 3950 transitions. [2020-09-21 12:25:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:45,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-09-21 12:25:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:45,838 INFO L225 Difference]: With dead ends: 2903 [2020-09-21 12:25:45,838 INFO L226 Difference]: Without dead ends: 1933 [2020-09-21 12:25:45,841 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 [2020-09-21 12:25:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-09-21 12:25:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 983. [2020-09-21 12:25:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-09-21 12:25:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1338 transitions. [2020-09-21 12:25:45,911 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1338 transitions. Word has length 138 [2020-09-21 12:25:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:45,912 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1338 transitions. [2020-09-21 12:25:45,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1338 transitions. [2020-09-21 12:25:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 12:25:45,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:45,915 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:45,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 12:25:45,915 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash -465117513, now seen corresponding path program 1 times [2020-09-21 12:25:45,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:45,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992875099] [2020-09-21 12:25:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:46,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-21 12:25:46,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-09-21 12:25:46,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-09-21 12:25:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:25:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:46,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:46,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:46,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-21 12:25:46,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992875099] [2020-09-21 12:25:46,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:46,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:25:46,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984244030] [2020-09-21 12:25:46,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:25:46,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:46,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:25:46,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:25:46,588 INFO L87 Difference]: Start difference. First operand 983 states and 1338 transitions. Second operand 4 states. [2020-09-21 12:25:46,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:46,856 INFO L93 Difference]: Finished difference Result 2119 states and 2877 transitions. [2020-09-21 12:25:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:46,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-09-21 12:25:46,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:46,863 INFO L225 Difference]: With dead ends: 2119 [2020-09-21 12:25:46,863 INFO L226 Difference]: Without dead ends: 1149 [2020-09-21 12:25:46,866 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 [2020-09-21 12:25:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-09-21 12:25:46,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1011. [2020-09-21 12:25:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-09-21 12:25:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1379 transitions. [2020-09-21 12:25:46,922 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1379 transitions. Word has length 139 [2020-09-21 12:25:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:46,922 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1379 transitions. [2020-09-21 12:25:46,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:25:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1379 transitions. [2020-09-21 12:25:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-21 12:25:46,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:46,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:46,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 12:25:46,926 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:46,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:46,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1293031732, now seen corresponding path program 1 times [2020-09-21 12:25:46,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:46,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597710827] [2020-09-21 12:25:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:46,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:47,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-21 12:25:47,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:25:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:25:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-21 12:25:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:48,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:48,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:48,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:48,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:48,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-21 12:25:48,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597710827] [2020-09-21 12:25:48,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:48,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:48,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384260899] [2020-09-21 12:25:48,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:48,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:48,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:48,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:48,019 INFO L87 Difference]: Start difference. First operand 1011 states and 1379 transitions. Second operand 3 states. [2020-09-21 12:25:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:48,059 INFO L93 Difference]: Finished difference Result 1946 states and 2656 transitions. [2020-09-21 12:25:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:48,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-09-21 12:25:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:48,065 INFO L225 Difference]: With dead ends: 1946 [2020-09-21 12:25:48,065 INFO L226 Difference]: Without dead ends: 930 [2020-09-21 12:25:48,067 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 [2020-09-21 12:25:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-09-21 12:25:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-09-21 12:25:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-09-21 12:25:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1252 transitions. [2020-09-21 12:25:48,106 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1252 transitions. Word has length 144 [2020-09-21 12:25:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:48,107 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1252 transitions. [2020-09-21 12:25:48,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1252 transitions. [2020-09-21 12:25:48,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 12:25:48,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:48,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:48,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 12:25:48,110 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2000958952, now seen corresponding path program 1 times [2020-09-21 12:25:48,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:48,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252290228] [2020-09-21 12:25:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:49,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 12:25:49,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:49,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-09-21 12:25:49,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 12:25:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-21 12:25:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:49,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:49,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:49,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:49,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-21 12:25:49,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252290228] [2020-09-21 12:25:49,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:49,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:49,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787724524] [2020-09-21 12:25:49,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:49,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:49,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:49,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:49,126 INFO L87 Difference]: Start difference. First operand 930 states and 1252 transitions. Second operand 3 states. [2020-09-21 12:25:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:49,242 INFO L93 Difference]: Finished difference Result 2668 states and 3606 transitions. [2020-09-21 12:25:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:49,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-09-21 12:25:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:49,254 INFO L225 Difference]: With dead ends: 2668 [2020-09-21 12:25:49,255 INFO L226 Difference]: Without dead ends: 1752 [2020-09-21 12:25:49,261 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 [2020-09-21 12:25:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-09-21 12:25:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1746. [2020-09-21 12:25:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2020-09-21 12:25:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2354 transitions. [2020-09-21 12:25:49,460 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2354 transitions. Word has length 149 [2020-09-21 12:25:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:49,460 INFO L479 AbstractCegarLoop]: Abstraction has 1746 states and 2354 transitions. [2020-09-21 12:25:49,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2354 transitions. [2020-09-21 12:25:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 12:25:49,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:49,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:49,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 12:25:49,462 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:49,463 INFO L82 PathProgramCache]: Analyzing trace with hash -989841702, now seen corresponding path program 1 times [2020-09-21 12:25:49,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:49,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264662471] [2020-09-21 12:25:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 12:25:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-09-21 12:25:50,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-21 12:25:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:25:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-21 12:25:50,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264662471] [2020-09-21 12:25:50,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:50,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-21 12:25:50,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884340481] [2020-09-21 12:25:50,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:25:50,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:25:50,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:25:50,265 INFO L87 Difference]: Start difference. First operand 1746 states and 2354 transitions. Second operand 4 states. [2020-09-21 12:25:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:50,524 INFO L93 Difference]: Finished difference Result 3674 states and 4936 transitions. [2020-09-21 12:25:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:50,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-21 12:25:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:50,533 INFO L225 Difference]: With dead ends: 3674 [2020-09-21 12:25:50,534 INFO L226 Difference]: Without dead ends: 1852 [2020-09-21 12:25:50,538 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 [2020-09-21 12:25:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-09-21 12:25:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1796. [2020-09-21 12:25:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1796 states. [2020-09-21 12:25:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2418 transitions. [2020-09-21 12:25:50,617 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2418 transitions. Word has length 149 [2020-09-21 12:25:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:50,618 INFO L479 AbstractCegarLoop]: Abstraction has 1796 states and 2418 transitions. [2020-09-21 12:25:50,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:25:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2418 transitions. [2020-09-21 12:25:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-21 12:25:50,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:50,624 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:50,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 12:25:50,624 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1264987469, now seen corresponding path program 1 times [2020-09-21 12:25:50,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:50,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116932535] [2020-09-21 12:25:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-21 12:25:50,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-21 12:25:50,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-21 12:25:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:25:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-09-21 12:25:50,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116932535] [2020-09-21 12:25:50,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:50,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332215371] [2020-09-21 12:25:50,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:50,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:50,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,931 INFO L87 Difference]: Start difference. First operand 1796 states and 2418 transitions. Second operand 3 states. [2020-09-21 12:25:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,121 INFO L93 Difference]: Finished difference Result 5256 states and 7060 transitions. [2020-09-21 12:25:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-09-21 12:25:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,138 INFO L225 Difference]: With dead ends: 5256 [2020-09-21 12:25:51,138 INFO L226 Difference]: Without dead ends: 3484 [2020-09-21 12:25:51,142 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 [2020-09-21 12:25:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2020-09-21 12:25:51,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3476. [2020-09-21 12:25:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3476 states. [2020-09-21 12:25:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 4651 transitions. [2020-09-21 12:25:51,296 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 4651 transitions. Word has length 160 [2020-09-21 12:25:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,297 INFO L479 AbstractCegarLoop]: Abstraction has 3476 states and 4651 transitions. [2020-09-21 12:25:51,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 4651 transitions. [2020-09-21 12:25:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-21 12:25:51,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,302 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:51,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 12:25:51,303 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,303 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-09-21 12:25:51,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078366760] [2020-09-21 12:25:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:25:51,347 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:25:51,347 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:25:51,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 12:25:51,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:25:51 BoogieIcfgContainer [2020-09-21 12:25:51,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:25:51,394 INFO L168 Benchmark]: Toolchain (without parser) took 24440.29 ms. Allocated memory was 142.1 MB in the beginning and 529.0 MB in the end (delta: 386.9 MB). Free memory was 103.8 MB in the beginning and 405.7 MB in the end (delta: -301.9 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:51,395 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:25:51,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.99 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 180.5 MB in the end (delta: -77.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:51,396 INFO L168 Benchmark]: Boogie Preprocessor took 71.01 ms. Allocated memory is still 205.5 MB. Free memory was 180.5 MB in the beginning and 177.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:51,396 INFO L168 Benchmark]: RCFGBuilder took 989.84 ms. Allocated memory is still 205.5 MB. Free memory was 177.0 MB in the beginning and 119.4 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:51,397 INFO L168 Benchmark]: TraceAbstraction took 22778.30 ms. Allocated memory was 205.5 MB in the beginning and 529.0 MB in the end (delta: 323.5 MB). Free memory was 118.7 MB in the beginning and 405.7 MB in the end (delta: -287.0 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:51,399 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 590.99 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 180.5 MB in the end (delta: -77.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.01 ms. Allocated memory is still 205.5 MB. Free memory was 180.5 MB in the beginning and 177.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 989.84 ms. Allocated memory is still 205.5 MB. Free memory was 177.0 MB in the beginning and 119.4 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22778.30 ms. Allocated memory was 205.5 MB in the beginning and 529.0 MB in the end (delta: 323.5 MB). Free memory was 118.7 MB in the beginning and 405.7 MB in the end (delta: -287.0 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.6s, OverallIterations: 22, TraceHistogramMax: 6, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5663 SDtfs, 3314 SDslu, 4075 SDs, 0 SdLazy, 2183 SolverSat, 421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3476occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 2289 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 2189 NumberOfCodeBlocks, 2189 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2006 ConstructedInterpolants, 0 QuantifiedInterpolants, 376154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 20 PerfectInterpolantSequences, 1677/1679 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...