/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:07,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:07,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:07,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:07,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:07,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:07,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:07,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:07,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:07,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:07,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:07,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:07,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:07,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:07,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:07,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:07,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:07,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:07,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:07,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:07,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:07,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:07,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:07,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:07,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:07,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:07,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:07,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:07,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:07,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:07,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:07,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:07,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:07,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:07,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:07,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:07,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:07,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:07,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:07,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:07,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:07,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:00:07,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:07,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:07,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:07,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:07,987 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:07,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:07,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:07,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:07,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:07,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:07,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:07,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:07,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:07,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:07,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:07,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:07,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:07,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:07,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:07,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:07,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:07,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:07,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:07,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:07,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:07,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:07,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:07,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:07,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:07,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:08,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:08,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:08,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:08,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:08,493 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:08,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-24 16:00:08,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d70a03d7/16dbeb907a5e407c8633e90b7479112c/FLAG85ce82cbb [2020-09-24 16:00:09,187 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:09,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-24 16:00:09,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d70a03d7/16dbeb907a5e407c8633e90b7479112c/FLAG85ce82cbb [2020-09-24 16:00:09,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d70a03d7/16dbeb907a5e407c8633e90b7479112c [2020-09-24 16:00:09,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:09,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:09,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:09,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:09,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:09,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:09" (1/1) ... [2020-09-24 16:00:09,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:09, skipping insertion in model container [2020-09-24 16:00:09,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:09" (1/1) ... [2020-09-24 16:00:09,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:09,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:09,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:09,959 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:10,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:10,187 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:10,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10 WrapperNode [2020-09-24 16:00:10,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:10,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:10,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:10,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:10,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... [2020-09-24 16:00:10,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... [2020-09-24 16:00:10,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... [2020-09-24 16:00:10,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... [2020-09-24 16:00:10,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... [2020-09-24 16:00:10,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... [2020-09-24 16:00:10,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... [2020-09-24 16:00:10,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:10,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:10,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:10,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:10,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 16:00:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 16:00:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 16:00:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 16:00:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:10,600 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 16:00:11,368 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 16:00:11,369 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 16:00:11,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:11,402 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:00:11,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:11 BoogieIcfgContainer [2020-09-24 16:00:11,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:11,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:11,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:11,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:11,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:09" (1/3) ... [2020-09-24 16:00:11,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c9c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:11, skipping insertion in model container [2020-09-24 16:00:11,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:10" (2/3) ... [2020-09-24 16:00:11,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c9c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:11, skipping insertion in model container [2020-09-24 16:00:11,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:11" (3/3) ... [2020-09-24 16:00:11,423 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2020-09-24 16:00:11,435 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:11,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:11,468 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:11,507 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:11,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:11,508 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:11,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:11,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:11,508 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:11,508 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:11,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-09-24 16:00:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 16:00:11,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:11,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:11,574 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:11,582 INFO L82 PathProgramCache]: Analyzing trace with hash 42998903, now seen corresponding path program 1 times [2020-09-24 16:00:11,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:11,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965542623] [2020-09-24 16:00:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:11,859 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:11,859 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:11,860 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:11,860 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:11,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 16:00:11,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 16:00:11,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:00:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 16:00:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:12,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:12,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:12,273 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:12,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:12,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:12,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:00:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:12,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965542623] [2020-09-24 16:00:12,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:12,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:12,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196466256] [2020-09-24 16:00:12,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:12,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:12,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:12,404 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 6 states. [2020-09-24 16:00:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:12,986 INFO L93 Difference]: Finished difference Result 738 states and 951 transitions. [2020-09-24 16:00:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:12,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-24 16:00:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:13,010 INFO L225 Difference]: With dead ends: 738 [2020-09-24 16:00:13,010 INFO L226 Difference]: Without dead ends: 413 [2020-09-24 16:00:13,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:00:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-24 16:00:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 402. [2020-09-24 16:00:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-09-24 16:00:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 476 transitions. [2020-09-24 16:00:13,110 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 476 transitions. Word has length 169 [2020-09-24 16:00:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:13,113 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 476 transitions. [2020-09-24 16:00:13,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 476 transitions. [2020-09-24 16:00:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 16:00:13,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:13,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:13,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:13,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:13,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1881331938, now seen corresponding path program 1 times [2020-09-24 16:00:13,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:13,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256129591] [2020-09-24 16:00:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:13,217 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:13,217 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:13,217 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:13,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:13,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 16:00:13,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:00:13,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 16:00:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 16:00:13,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:13,284 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:13,284 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:13,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:13,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:13,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:13,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:13,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:13,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256129591] [2020-09-24 16:00:13,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:13,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:13,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756378905] [2020-09-24 16:00:13,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:13,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:13,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:13,312 INFO L87 Difference]: Start difference. First operand 402 states and 476 transitions. Second operand 3 states. [2020-09-24 16:00:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:13,366 INFO L93 Difference]: Finished difference Result 689 states and 834 transitions. [2020-09-24 16:00:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:13,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-09-24 16:00:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:13,371 INFO L225 Difference]: With dead ends: 689 [2020-09-24 16:00:13,372 INFO L226 Difference]: Without dead ends: 418 [2020-09-24 16:00:13,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-24 16:00:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-09-24 16:00:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-09-24 16:00:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 492 transitions. [2020-09-24 16:00:13,404 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 492 transitions. Word has length 191 [2020-09-24 16:00:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:13,405 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 492 transitions. [2020-09-24 16:00:13,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 492 transitions. [2020-09-24 16:00:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 16:00:13,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:13,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:13,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:13,409 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:13,410 INFO L82 PathProgramCache]: Analyzing trace with hash 572919500, now seen corresponding path program 1 times [2020-09-24 16:00:13,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:13,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627778947] [2020-09-24 16:00:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:13,445 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:13,446 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:13,446 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:13,446 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:13,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 16:00:13,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:13,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:13,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-09-24 16:00:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 16:00:13,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:13,516 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:13,516 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:13,517 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:13,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:13,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:13,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627778947] [2020-09-24 16:00:13,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:13,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:13,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139933456] [2020-09-24 16:00:13,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:13,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:13,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:13,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:13,562 INFO L87 Difference]: Start difference. First operand 418 states and 492 transitions. Second operand 3 states. [2020-09-24 16:00:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:13,885 INFO L93 Difference]: Finished difference Result 724 states and 887 transitions. [2020-09-24 16:00:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:13,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-24 16:00:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:13,892 INFO L225 Difference]: With dead ends: 724 [2020-09-24 16:00:13,892 INFO L226 Difference]: Without dead ends: 453 [2020-09-24 16:00:13,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-09-24 16:00:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 442. [2020-09-24 16:00:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-09-24 16:00:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-09-24 16:00:13,952 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 192 [2020-09-24 16:00:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:13,955 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-09-24 16:00:13,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-09-24 16:00:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 16:00:13,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:13,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:13,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:13,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:13,963 INFO L82 PathProgramCache]: Analyzing trace with hash -442840212, now seen corresponding path program 1 times [2020-09-24 16:00:13,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:13,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763159831] [2020-09-24 16:00:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:14,025 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:14,025 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:14,026 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:14,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 16:00:14,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:14,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:14,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 16:00:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 16:00:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:14,144 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:14,144 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:14,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:14,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:14,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:14,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:14,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:14,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:14,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:14,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763159831] [2020-09-24 16:00:14,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:14,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:14,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752599671] [2020-09-24 16:00:14,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:14,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:14,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:14,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:14,229 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 3 states. [2020-09-24 16:00:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:14,335 INFO L93 Difference]: Finished difference Result 1025 states and 1255 transitions. [2020-09-24 16:00:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:14,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-09-24 16:00:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:14,341 INFO L225 Difference]: With dead ends: 1025 [2020-09-24 16:00:14,341 INFO L226 Difference]: Without dead ends: 730 [2020-09-24 16:00:14,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:14,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-24 16:00:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 730. [2020-09-24 16:00:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2020-09-24 16:00:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 881 transitions. [2020-09-24 16:00:14,373 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 881 transitions. Word has length 199 [2020-09-24 16:00:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:14,374 INFO L479 AbstractCegarLoop]: Abstraction has 730 states and 881 transitions. [2020-09-24 16:00:14,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 881 transitions. [2020-09-24 16:00:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 16:00:14,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:14,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:14,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:14,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:14,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1902289806, now seen corresponding path program 1 times [2020-09-24 16:00:14,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:14,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676525638] [2020-09-24 16:00:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:14,432 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:14,432 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:14,433 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:14,433 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:14,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-24 16:00:14,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:14,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:14,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-24 16:00:14,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:00:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:14,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:14,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:14,513 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:14,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:14,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:14,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:14,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676525638] [2020-09-24 16:00:14,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:14,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:14,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334152358] [2020-09-24 16:00:14,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:14,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:14,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:14,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:14,575 INFO L87 Difference]: Start difference. First operand 730 states and 881 transitions. Second operand 3 states. [2020-09-24 16:00:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:14,955 INFO L93 Difference]: Finished difference Result 1430 states and 1801 transitions. [2020-09-24 16:00:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:14,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-24 16:00:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:14,961 INFO L225 Difference]: With dead ends: 1430 [2020-09-24 16:00:14,962 INFO L226 Difference]: Without dead ends: 847 [2020-09-24 16:00:14,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-24 16:00:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 820. [2020-09-24 16:00:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-09-24 16:00:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 981 transitions. [2020-09-24 16:00:15,034 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 981 transitions. Word has length 217 [2020-09-24 16:00:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:15,035 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 981 transitions. [2020-09-24 16:00:15,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 981 transitions. [2020-09-24 16:00:15,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 16:00:15,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:15,043 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:15,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:15,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:15,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1839961070, now seen corresponding path program 1 times [2020-09-24 16:00:15,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:15,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29628429] [2020-09-24 16:00:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:15,092 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:15,092 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:15,092 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:15,093 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:15,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-24 16:00:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:15,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-24 16:00:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:00:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:15,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:15,167 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:15,167 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:15,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:15,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:15,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:15,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29628429] [2020-09-24 16:00:15,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:15,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:15,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330193300] [2020-09-24 16:00:15,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:15,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:15,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:15,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:15,219 INFO L87 Difference]: Start difference. First operand 820 states and 981 transitions. Second operand 3 states. [2020-09-24 16:00:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:15,455 INFO L93 Difference]: Finished difference Result 1565 states and 1923 transitions. [2020-09-24 16:00:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:15,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-24 16:00:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:15,461 INFO L225 Difference]: With dead ends: 1565 [2020-09-24 16:00:15,461 INFO L226 Difference]: Without dead ends: 892 [2020-09-24 16:00:15,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-24 16:00:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 872. [2020-09-24 16:00:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-09-24 16:00:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1043 transitions. [2020-09-24 16:00:15,492 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1043 transitions. Word has length 217 [2020-09-24 16:00:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:15,492 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 1043 transitions. [2020-09-24 16:00:15,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1043 transitions. [2020-09-24 16:00:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 16:00:15,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:15,498 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:15,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:15,498 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash 561231978, now seen corresponding path program 1 times [2020-09-24 16:00:15,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:15,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676862237] [2020-09-24 16:00:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:15,534 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:15,534 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:15,535 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:15,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:15,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-24 16:00:15,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:15,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-09-24 16:00:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:00:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:15,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:15,586 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:15,586 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:15,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:15,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676862237] [2020-09-24 16:00:15,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:15,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:15,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151991635] [2020-09-24 16:00:15,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:15,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:15,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:15,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:15,649 INFO L87 Difference]: Start difference. First operand 872 states and 1043 transitions. Second operand 3 states. [2020-09-24 16:00:15,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:15,692 INFO L93 Difference]: Finished difference Result 2236 states and 2701 transitions. [2020-09-24 16:00:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:15,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-24 16:00:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:15,701 INFO L225 Difference]: With dead ends: 2236 [2020-09-24 16:00:15,701 INFO L226 Difference]: Without dead ends: 1511 [2020-09-24 16:00:15,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:15,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-09-24 16:00:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-09-24 16:00:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-09-24 16:00:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1798 transitions. [2020-09-24 16:00:15,754 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1798 transitions. Word has length 224 [2020-09-24 16:00:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:15,755 INFO L479 AbstractCegarLoop]: Abstraction has 1509 states and 1798 transitions. [2020-09-24 16:00:15,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1798 transitions. [2020-09-24 16:00:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 16:00:15,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:15,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:15,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:15,762 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:15,763 INFO L82 PathProgramCache]: Analyzing trace with hash -902826781, now seen corresponding path program 1 times [2020-09-24 16:00:15,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:15,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538064148] [2020-09-24 16:00:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:15,795 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:15,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:15,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:15,796 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:15,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-24 16:00:15,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:15,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:15,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 16:00:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:00:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:15,838 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:15,838 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:15,838 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:15,839 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:15,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:15,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:15,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:15,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:15,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 16:00:15,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538064148] [2020-09-24 16:00:15,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:15,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:15,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014665946] [2020-09-24 16:00:15,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:15,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:15,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:15,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:15,871 INFO L87 Difference]: Start difference. First operand 1509 states and 1798 transitions. Second operand 3 states. [2020-09-24 16:00:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:15,940 INFO L93 Difference]: Finished difference Result 2897 states and 3475 transitions. [2020-09-24 16:00:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:15,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-24 16:00:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:15,950 INFO L225 Difference]: With dead ends: 2897 [2020-09-24 16:00:15,950 INFO L226 Difference]: Without dead ends: 1535 [2020-09-24 16:00:15,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-09-24 16:00:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1521. [2020-09-24 16:00:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-09-24 16:00:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1804 transitions. [2020-09-24 16:00:16,006 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1804 transitions. Word has length 225 [2020-09-24 16:00:16,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:16,007 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 1804 transitions. [2020-09-24 16:00:16,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1804 transitions. [2020-09-24 16:00:16,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 16:00:16,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:16,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:16,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:16,015 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:16,016 INFO L82 PathProgramCache]: Analyzing trace with hash -182509933, now seen corresponding path program 1 times [2020-09-24 16:00:16,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:16,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036699676] [2020-09-24 16:00:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:16,077 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:16,078 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:16,078 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:16,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:16,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 16:00:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:16,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-24 16:00:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 16:00:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:16,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:16,127 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:16,127 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:16,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:16,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:16,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:16,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:16,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036699676] [2020-09-24 16:00:16,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:16,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:16,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005796173] [2020-09-24 16:00:16,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:16,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:16,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:16,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:16,160 INFO L87 Difference]: Start difference. First operand 1521 states and 1804 transitions. Second operand 3 states. [2020-09-24 16:00:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:16,254 INFO L93 Difference]: Finished difference Result 4275 states and 5108 transitions. [2020-09-24 16:00:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:16,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2020-09-24 16:00:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:16,276 INFO L225 Difference]: With dead ends: 4275 [2020-09-24 16:00:16,276 INFO L226 Difference]: Without dead ends: 2901 [2020-09-24 16:00:16,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-09-24 16:00:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2899. [2020-09-24 16:00:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2899 states. [2020-09-24 16:00:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 3440 transitions. [2020-09-24 16:00:16,390 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 3440 transitions. Word has length 227 [2020-09-24 16:00:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:16,391 INFO L479 AbstractCegarLoop]: Abstraction has 2899 states and 3440 transitions. [2020-09-24 16:00:16,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 3440 transitions. [2020-09-24 16:00:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 16:00:16,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:16,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:16,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:00:16,402 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:16,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash -331944198, now seen corresponding path program 1 times [2020-09-24 16:00:16,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:16,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447744681] [2020-09-24 16:00:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:16,441 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:16,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:16,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:16,442 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-24 16:00:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-09-24 16:00:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 16:00:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:16,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:16,492 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:16,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:16,493 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:16,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:16,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:16,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:16,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447744681] [2020-09-24 16:00:16,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:16,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:16,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822393044] [2020-09-24 16:00:16,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:16,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:16,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:16,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:16,593 INFO L87 Difference]: Start difference. First operand 2899 states and 3440 transitions. Second operand 3 states. [2020-09-24 16:00:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:16,738 INFO L93 Difference]: Finished difference Result 6983 states and 8335 transitions. [2020-09-24 16:00:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:16,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2020-09-24 16:00:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:16,761 INFO L225 Difference]: With dead ends: 6983 [2020-09-24 16:00:16,762 INFO L226 Difference]: Without dead ends: 4253 [2020-09-24 16:00:16,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2020-09-24 16:00:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4253. [2020-09-24 16:00:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4253 states. [2020-09-24 16:00:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 5058 transitions. [2020-09-24 16:00:16,903 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 5058 transitions. Word has length 228 [2020-09-24 16:00:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:16,904 INFO L479 AbstractCegarLoop]: Abstraction has 4253 states and 5058 transitions. [2020-09-24 16:00:16,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 5058 transitions. [2020-09-24 16:00:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 16:00:16,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:16,918 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:16,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:00:16,918 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:16,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1338604276, now seen corresponding path program 1 times [2020-09-24 16:00:16,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:16,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089358562] [2020-09-24 16:00:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:00:16,963 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:00:16,963 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:00:16,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:00:17,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:17 BoogieIcfgContainer [2020-09-24 16:00:17,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:17,015 INFO L168 Benchmark]: Toolchain (without parser) took 7503.20 ms. Allocated memory was 141.6 MB in the beginning and 381.2 MB in the end (delta: 239.6 MB). Free memory was 104.3 MB in the beginning and 234.7 MB in the end (delta: -130.5 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:17,016 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 16:00:17,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.69 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 180.4 MB in the end (delta: -76.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:17,018 INFO L168 Benchmark]: Boogie Preprocessor took 97.76 ms. Allocated memory is still 205.0 MB. Free memory was 180.4 MB in the beginning and 177.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:17,019 INFO L168 Benchmark]: RCFGBuilder took 1125.12 ms. Allocated memory is still 205.0 MB. Free memory was 177.8 MB in the beginning and 109.3 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:17,020 INFO L168 Benchmark]: TraceAbstraction took 5598.38 ms. Allocated memory was 205.0 MB in the beginning and 381.2 MB in the end (delta: 176.2 MB). Free memory was 108.6 MB in the beginning and 234.7 MB in the end (delta: -126.1 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:17,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.69 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 180.4 MB in the end (delta: -76.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.76 ms. Allocated memory is still 205.0 MB. Free memory was 180.4 MB in the beginning and 177.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1125.12 ms. Allocated memory is still 205.0 MB. Free memory was 177.8 MB in the beginning and 109.3 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5598.38 ms. Allocated memory was 205.0 MB in the beginning and 381.2 MB in the end (delta: 176.2 MB). Free memory was 108.6 MB in the beginning and 234.7 MB in the end (delta: -126.1 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 611]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] int s ; [L617] int tmp ; [L621] s = 8464 [L622] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf = __VERIFIER_nondet_int() ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp = __VERIFIER_nondet_long() ; [L45] int cb ; [L46] long num1 ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 ; [L55] int tmp___4 ; [L56] int tmp___5 ; [L57] int tmp___6 ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 ; [L61] int tmp___10 ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] got_new_session = 1 [L277] s__state = 8496 [L278] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L282] ret = __VERIFIER_nondet_int() [L283] COND TRUE blastFlag == 1 [L284] blastFlag = 2 [L286] COND FALSE !(ret <= 0) [L289] COND TRUE \read(s__hit) [L290] s__state = 8656 [L294] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND TRUE s__state == 8656 [L488] s__session__cipher = s__s3__tmp__new_cipher [L489] tmp___9 = __VERIFIER_nondet_int() [L490] COND FALSE !(! tmp___9) [L494] ret = __VERIFIER_nondet_int() [L495] COND TRUE blastFlag == 2 [L496] blastFlag = 3 [L498] COND FALSE !(ret <= 0) [L501] s__state = 8672 [L502] s__init_num = 0 [L503] tmp___10 = __VERIFIER_nondet_int() [L504] COND FALSE !(! tmp___10) [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND FALSE !(s__state == 8656) [L193] COND FALSE !(s__state == 8657) [L196] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND FALSE !(blastFlag == 4) [L515] COND TRUE blastFlag == 3 [L611] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 416 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5167 SDtfs, 2473 SDslu, 4213 SDs, 0 SdLazy, 584 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4253occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 2358 NumberOfCodeBlocks, 2358 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2079 ConstructedInterpolants, 0 QuantifiedInterpolants, 698100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 269/269 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...