/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:57:28,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:28,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:28,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:57:28,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:57:28,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:57:28,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:57:28,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:57:28,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:57:28,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:57:28,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:57:28,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:57:28,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:28,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:28,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:28,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:28,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:28,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:28,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:28,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:28,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:28,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:28,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:28,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:28,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:28,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:28,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:28,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:28,500 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 14:57:28,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:28,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:28,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:28,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:28,547 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:28,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:28,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:28,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:28,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:28,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:28,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:28,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:28,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:28,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:28,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:28,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:28,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:28,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:28,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:28,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:28,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:28,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:28,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:28,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:28,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:28,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:28,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:28,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:28,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:28,554 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 -> false [2020-09-24 14:57:29,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:29,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:29,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:29,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:29,080 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:29,081 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-09-24 14:57:29,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc48f3a4f/e2f0478805ff472baa2130ed1f4d065a/FLAG1efb4bad9 [2020-09-24 14:57:29,718 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:29,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-09-24 14:57:29,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc48f3a4f/e2f0478805ff472baa2130ed1f4d065a/FLAG1efb4bad9 [2020-09-24 14:57:30,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc48f3a4f/e2f0478805ff472baa2130ed1f4d065a [2020-09-24 14:57:30,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:30,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:30,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:30,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:30,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:30,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4576ff6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30, skipping insertion in model container [2020-09-24 14:57:30,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:30,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:30,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:30,510 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:30,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:30,690 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:30,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30 WrapperNode [2020-09-24 14:57:30,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:30,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:30,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:30,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:30,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:30,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:30,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:30,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:30,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (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 14:57:30,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:30,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:30,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-24 14:57:30,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 14:57:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 14:57:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-24 14:57:30,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:30,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:30,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:31,088 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:31,712 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-24 14:57:31,712 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-24 14:57:31,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:31,742 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:57:31,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:31 BoogieIcfgContainer [2020-09-24 14:57:31,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:31,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:31,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:31,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:31,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:30" (1/3) ... [2020-09-24 14:57:31,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd97626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:31, skipping insertion in model container [2020-09-24 14:57:31,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (2/3) ... [2020-09-24 14:57:31,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd97626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:31, skipping insertion in model container [2020-09-24 14:57:31,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:31" (3/3) ... [2020-09-24 14:57:31,761 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-2.c [2020-09-24 14:57:31,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:31,785 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:31,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:31,845 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:31,845 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:31,846 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:31,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:31,846 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:31,846 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:31,846 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:31,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states. [2020-09-24 14:57:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 14:57:31,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:31,897 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] [2020-09-24 14:57:31,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:31,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1836119895, now seen corresponding path program 1 times [2020-09-24 14:57:31,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:31,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925259193] [2020-09-24 14:57:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:32,515 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 14:57:32,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925259193] [2020-09-24 14:57:32,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:32,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:32,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289627535] [2020-09-24 14:57:32,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:32,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:32,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:32,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:32,552 INFO L87 Difference]: Start difference. First operand 383 states. Second operand 5 states. [2020-09-24 14:57:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:32,939 INFO L93 Difference]: Finished difference Result 686 states and 901 transitions. [2020-09-24 14:57:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:32,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-24 14:57:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:32,963 INFO L225 Difference]: With dead ends: 686 [2020-09-24 14:57:32,963 INFO L226 Difference]: Without dead ends: 362 [2020-09-24 14:57:32,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:57:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-09-24 14:57:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 347. [2020-09-24 14:57:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-09-24 14:57:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 406 transitions. [2020-09-24 14:57:33,051 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 406 transitions. Word has length 160 [2020-09-24 14:57:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:33,052 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 406 transitions. [2020-09-24 14:57:33,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 406 transitions. [2020-09-24 14:57:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-24 14:57:33,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:33,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:33,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:33,058 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:33,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1755332249, now seen corresponding path program 1 times [2020-09-24 14:57:33,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:33,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919604713] [2020-09-24 14:57:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:33,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919604713] [2020-09-24 14:57:33,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:33,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:33,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143765669] [2020-09-24 14:57:33,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:33,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:33,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:33,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:33,382 INFO L87 Difference]: Start difference. First operand 347 states and 406 transitions. Second operand 5 states. [2020-09-24 14:57:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:33,666 INFO L93 Difference]: Finished difference Result 607 states and 757 transitions. [2020-09-24 14:57:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:33,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-24 14:57:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:33,671 INFO L225 Difference]: With dead ends: 607 [2020-09-24 14:57:33,672 INFO L226 Difference]: Without dead ends: 405 [2020-09-24 14:57:33,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:57:33,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-09-24 14:57:33,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 360. [2020-09-24 14:57:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-09-24 14:57:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 424 transitions. [2020-09-24 14:57:33,699 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 424 transitions. Word has length 179 [2020-09-24 14:57:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:33,700 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 424 transitions. [2020-09-24 14:57:33,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 424 transitions. [2020-09-24 14:57:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 14:57:33,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:33,711 INFO L422 BasicCegarLoop]: trace histogram [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 14:57:33,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:33,712 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:33,712 INFO L82 PathProgramCache]: Analyzing trace with hash 933719357, now seen corresponding path program 1 times [2020-09-24 14:57:33,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:33,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339626126] [2020-09-24 14:57:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:33,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339626126] [2020-09-24 14:57:33,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:33,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:33,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308844574] [2020-09-24 14:57:33,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:33,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:33,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:33,901 INFO L87 Difference]: Start difference. First operand 360 states and 424 transitions. Second operand 3 states. [2020-09-24 14:57:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:34,156 INFO L93 Difference]: Finished difference Result 603 states and 737 transitions. [2020-09-24 14:57:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:34,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-09-24 14:57:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:34,163 INFO L225 Difference]: With dead ends: 603 [2020-09-24 14:57:34,164 INFO L226 Difference]: Without dead ends: 388 [2020-09-24 14:57:34,166 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 14:57:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-09-24 14:57:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 378. [2020-09-24 14:57:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-09-24 14:57:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 447 transitions. [2020-09-24 14:57:34,222 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 447 transitions. Word has length 183 [2020-09-24 14:57:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:34,223 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 447 transitions. [2020-09-24 14:57:34,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 447 transitions. [2020-09-24 14:57:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 14:57:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:34,229 INFO L422 BasicCegarLoop]: trace histogram [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 14:57:34,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:34,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 787271153, now seen corresponding path program 1 times [2020-09-24 14:57:34,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:34,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430606077] [2020-09-24 14:57:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:34,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 14:57:34,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430606077] [2020-09-24 14:57:34,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:34,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:34,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968129395] [2020-09-24 14:57:34,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:34,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:34,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:34,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:34,417 INFO L87 Difference]: Start difference. First operand 378 states and 447 transitions. Second operand 3 states. [2020-09-24 14:57:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:34,500 INFO L93 Difference]: Finished difference Result 837 states and 1037 transitions. [2020-09-24 14:57:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:34,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2020-09-24 14:57:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:34,507 INFO L225 Difference]: With dead ends: 837 [2020-09-24 14:57:34,507 INFO L226 Difference]: Without dead ends: 604 [2020-09-24 14:57:34,509 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 14:57:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-09-24 14:57:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2020-09-24 14:57:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-09-24 14:57:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 734 transitions. [2020-09-24 14:57:34,549 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 734 transitions. Word has length 190 [2020-09-24 14:57:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:34,550 INFO L479 AbstractCegarLoop]: Abstraction has 604 states and 734 transitions. [2020-09-24 14:57:34,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 734 transitions. [2020-09-24 14:57:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 14:57:34,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:34,557 INFO L422 BasicCegarLoop]: trace histogram [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 14:57:34,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:34,558 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1378664763, now seen corresponding path program 1 times [2020-09-24 14:57:34,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:34,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456625389] [2020-09-24 14:57:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:34,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 14:57:34,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456625389] [2020-09-24 14:57:34,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:34,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:34,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728696775] [2020-09-24 14:57:34,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:34,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:34,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:34,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:34,690 INFO L87 Difference]: Start difference. First operand 604 states and 734 transitions. Second operand 3 states. [2020-09-24 14:57:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:34,854 INFO L93 Difference]: Finished difference Result 1124 states and 1405 transitions. [2020-09-24 14:57:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:34,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-09-24 14:57:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:34,860 INFO L225 Difference]: With dead ends: 1124 [2020-09-24 14:57:34,860 INFO L226 Difference]: Without dead ends: 665 [2020-09-24 14:57:34,862 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 14:57:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2020-09-24 14:57:34,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 644. [2020-09-24 14:57:34,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-09-24 14:57:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 784 transitions. [2020-09-24 14:57:34,889 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 784 transitions. Word has length 203 [2020-09-24 14:57:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:34,890 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 784 transitions. [2020-09-24 14:57:34,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 784 transitions. [2020-09-24 14:57:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 14:57:34,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:34,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:34,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:34,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:34,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:34,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2019314839, now seen corresponding path program 1 times [2020-09-24 14:57:34,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:34,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724058390] [2020-09-24 14:57:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:34,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:34,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724058390] [2020-09-24 14:57:35,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:35,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:35,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154085596] [2020-09-24 14:57:35,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:35,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:35,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:35,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:35,009 INFO L87 Difference]: Start difference. First operand 644 states and 784 transitions. Second operand 3 states. [2020-09-24 14:57:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:35,044 INFO L93 Difference]: Finished difference Result 1572 states and 1952 transitions. [2020-09-24 14:57:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:35,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-09-24 14:57:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:35,051 INFO L225 Difference]: With dead ends: 1572 [2020-09-24 14:57:35,052 INFO L226 Difference]: Without dead ends: 1073 [2020-09-24 14:57:35,053 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 14:57:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2020-09-24 14:57:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1071. [2020-09-24 14:57:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-09-24 14:57:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1308 transitions. [2020-09-24 14:57:35,091 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1308 transitions. Word has length 210 [2020-09-24 14:57:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:35,092 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1308 transitions. [2020-09-24 14:57:35,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1308 transitions. [2020-09-24 14:57:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 14:57:35,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:35,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:35,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:35,097 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:35,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1170821308, now seen corresponding path program 1 times [2020-09-24 14:57:35,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:35,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649373205] [2020-09-24 14:57:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 14:57:35,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649373205] [2020-09-24 14:57:35,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:35,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:35,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215010957] [2020-09-24 14:57:35,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:35,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:35,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:35,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:35,312 INFO L87 Difference]: Start difference. First operand 1071 states and 1308 transitions. Second operand 3 states. [2020-09-24 14:57:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:35,358 INFO L93 Difference]: Finished difference Result 2015 states and 2489 transitions. [2020-09-24 14:57:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:35,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-24 14:57:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:35,368 INFO L225 Difference]: With dead ends: 2015 [2020-09-24 14:57:35,369 INFO L226 Difference]: Without dead ends: 1089 [2020-09-24 14:57:35,372 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 14:57:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-09-24 14:57:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1079. [2020-09-24 14:57:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-09-24 14:57:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1312 transitions. [2020-09-24 14:57:35,426 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1312 transitions. Word has length 211 [2020-09-24 14:57:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:35,427 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1312 transitions. [2020-09-24 14:57:35,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1312 transitions. [2020-09-24 14:57:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 14:57:35,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:35,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:35,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:35,436 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:35,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:35,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1492439948, now seen corresponding path program 1 times [2020-09-24 14:57:35,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:35,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603625255] [2020-09-24 14:57:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 14:57:35,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603625255] [2020-09-24 14:57:35,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:35,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:35,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920313458] [2020-09-24 14:57:35,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:35,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:35,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:35,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:35,564 INFO L87 Difference]: Start difference. First operand 1079 states and 1312 transitions. Second operand 3 states. [2020-09-24 14:57:35,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:35,648 INFO L93 Difference]: Finished difference Result 2933 states and 3616 transitions. [2020-09-24 14:57:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:35,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-09-24 14:57:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:35,664 INFO L225 Difference]: With dead ends: 2933 [2020-09-24 14:57:35,664 INFO L226 Difference]: Without dead ends: 1999 [2020-09-24 14:57:35,667 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 14:57:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2020-09-24 14:57:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1997. [2020-09-24 14:57:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2020-09-24 14:57:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2440 transitions. [2020-09-24 14:57:35,771 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2440 transitions. Word has length 213 [2020-09-24 14:57:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:35,772 INFO L479 AbstractCegarLoop]: Abstraction has 1997 states and 2440 transitions. [2020-09-24 14:57:35,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2440 transitions. [2020-09-24 14:57:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 14:57:35,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:35,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:35,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:35,778 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:35,779 INFO L82 PathProgramCache]: Analyzing trace with hash -193739890, now seen corresponding path program 1 times [2020-09-24 14:57:35,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:35,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165736519] [2020-09-24 14:57:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 14:57:35,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165736519] [2020-09-24 14:57:35,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:35,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:35,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247992241] [2020-09-24 14:57:35,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:35,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:35,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:35,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:35,955 INFO L87 Difference]: Start difference. First operand 1997 states and 2440 transitions. Second operand 3 states. [2020-09-24 14:57:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:36,037 INFO L93 Difference]: Finished difference Result 2948 states and 3610 transitions. [2020-09-24 14:57:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:36,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-09-24 14:57:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:36,054 INFO L225 Difference]: With dead ends: 2948 [2020-09-24 14:57:36,054 INFO L226 Difference]: Without dead ends: 2014 [2020-09-24 14:57:36,058 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 14:57:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-09-24 14:57:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2012. [2020-09-24 14:57:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2012 states. [2020-09-24 14:57:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2446 transitions. [2020-09-24 14:57:36,164 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2446 transitions. Word has length 213 [2020-09-24 14:57:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:36,165 INFO L479 AbstractCegarLoop]: Abstraction has 2012 states and 2446 transitions. [2020-09-24 14:57:36,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2446 transitions. [2020-09-24 14:57:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 14:57:36,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:36,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:36,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:36,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:36,180 INFO L82 PathProgramCache]: Analyzing trace with hash -792504871, now seen corresponding path program 1 times [2020-09-24 14:57:36,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:36,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95198250] [2020-09-24 14:57:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 14:57:36,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95198250] [2020-09-24 14:57:36,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:36,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:36,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695310056] [2020-09-24 14:57:36,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:36,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:36,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:36,348 INFO L87 Difference]: Start difference. First operand 2012 states and 2446 transitions. Second operand 3 states. [2020-09-24 14:57:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:36,518 INFO L93 Difference]: Finished difference Result 3864 states and 4745 transitions. [2020-09-24 14:57:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:36,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-09-24 14:57:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:36,542 INFO L225 Difference]: With dead ends: 3864 [2020-09-24 14:57:36,542 INFO L226 Difference]: Without dead ends: 2927 [2020-09-24 14:57:36,547 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 14:57:36,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-09-24 14:57:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2927. [2020-09-24 14:57:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2020-09-24 14:57:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3569 transitions. [2020-09-24 14:57:36,704 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3569 transitions. Word has length 214 [2020-09-24 14:57:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:36,705 INFO L479 AbstractCegarLoop]: Abstraction has 2927 states and 3569 transitions. [2020-09-24 14:57:36,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3569 transitions. [2020-09-24 14:57:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 14:57:36,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:36,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:36,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:36,714 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1362043361, now seen corresponding path program 1 times [2020-09-24 14:57:36,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:36,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742731256] [2020-09-24 14:57:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 14:57:36,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742731256] [2020-09-24 14:57:36,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:36,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:36,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798043952] [2020-09-24 14:57:36,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:36,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:36,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:36,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:36,898 INFO L87 Difference]: Start difference. First operand 2927 states and 3569 transitions. Second operand 3 states. [2020-09-24 14:57:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:37,264 INFO L93 Difference]: Finished difference Result 6369 states and 8021 transitions. [2020-09-24 14:57:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:37,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-24 14:57:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:37,293 INFO L225 Difference]: With dead ends: 6369 [2020-09-24 14:57:37,293 INFO L226 Difference]: Without dead ends: 3590 [2020-09-24 14:57:37,303 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 14:57:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-09-24 14:57:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3404. [2020-09-24 14:57:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-09-24 14:57:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4085 transitions. [2020-09-24 14:57:37,501 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4085 transitions. Word has length 224 [2020-09-24 14:57:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:37,502 INFO L479 AbstractCegarLoop]: Abstraction has 3404 states and 4085 transitions. [2020-09-24 14:57:37,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4085 transitions. [2020-09-24 14:57:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 14:57:37,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:37,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:37,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:57:37,514 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:37,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:37,515 INFO L82 PathProgramCache]: Analyzing trace with hash -481557951, now seen corresponding path program 1 times [2020-09-24 14:57:37,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:37,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565697692] [2020-09-24 14:57:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 14:57:37,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565697692] [2020-09-24 14:57:37,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:37,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:37,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036061813] [2020-09-24 14:57:37,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:37,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:37,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:37,693 INFO L87 Difference]: Start difference. First operand 3404 states and 4085 transitions. Second operand 3 states. [2020-09-24 14:57:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:37,938 INFO L93 Difference]: Finished difference Result 6973 states and 8455 transitions. [2020-09-24 14:57:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:37,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-24 14:57:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:37,962 INFO L225 Difference]: With dead ends: 6973 [2020-09-24 14:57:37,962 INFO L226 Difference]: Without dead ends: 3729 [2020-09-24 14:57:37,970 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 14:57:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2020-09-24 14:57:38,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3617. [2020-09-24 14:57:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3617 states. [2020-09-24 14:57:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 4313 transitions. [2020-09-24 14:57:38,131 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 4313 transitions. Word has length 224 [2020-09-24 14:57:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:38,132 INFO L479 AbstractCegarLoop]: Abstraction has 3617 states and 4313 transitions. [2020-09-24 14:57:38,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 4313 transitions. [2020-09-24 14:57:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 14:57:38,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:38,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:38,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:57:38,148 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1724843027, now seen corresponding path program 1 times [2020-09-24 14:57:38,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:38,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196696601] [2020-09-24 14:57:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 14:57:38,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196696601] [2020-09-24 14:57:38,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:38,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:38,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573175836] [2020-09-24 14:57:38,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:38,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:38,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:38,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:38,290 INFO L87 Difference]: Start difference. First operand 3617 states and 4313 transitions. Second operand 3 states. [2020-09-24 14:57:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:38,428 INFO L93 Difference]: Finished difference Result 7074 states and 8479 transitions. [2020-09-24 14:57:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:38,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-09-24 14:57:38,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:38,453 INFO L225 Difference]: With dead ends: 7074 [2020-09-24 14:57:38,453 INFO L226 Difference]: Without dead ends: 4762 [2020-09-24 14:57:38,460 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 14:57:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2020-09-24 14:57:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 4762. [2020-09-24 14:57:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4762 states. [2020-09-24 14:57:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 5688 transitions. [2020-09-24 14:57:38,619 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 5688 transitions. Word has length 239 [2020-09-24 14:57:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:38,619 INFO L479 AbstractCegarLoop]: Abstraction has 4762 states and 5688 transitions. [2020-09-24 14:57:38,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 5688 transitions. [2020-09-24 14:57:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-24 14:57:38,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:38,633 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:38,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 14:57:38,633 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1037157879, now seen corresponding path program 1 times [2020-09-24 14:57:38,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:38,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503990762] [2020-09-24 14:57:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 14:57:38,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503990762] [2020-09-24 14:57:38,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:38,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:38,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632121024] [2020-09-24 14:57:38,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:38,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:38,821 INFO L87 Difference]: Start difference. First operand 4762 states and 5688 transitions. Second operand 3 states. [2020-09-24 14:57:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:39,072 INFO L93 Difference]: Finished difference Result 9788 states and 11817 transitions. [2020-09-24 14:57:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:39,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2020-09-24 14:57:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:39,099 INFO L225 Difference]: With dead ends: 9788 [2020-09-24 14:57:39,100 INFO L226 Difference]: Without dead ends: 5186 [2020-09-24 14:57:39,110 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 14:57:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2020-09-24 14:57:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5078. [2020-09-24 14:57:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2020-09-24 14:57:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 6024 transitions. [2020-09-24 14:57:39,301 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 6024 transitions. Word has length 247 [2020-09-24 14:57:39,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:39,302 INFO L479 AbstractCegarLoop]: Abstraction has 5078 states and 6024 transitions. [2020-09-24 14:57:39,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 6024 transitions. [2020-09-24 14:57:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-24 14:57:39,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:39,321 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:39,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 14:57:39,322 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:39,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1741885973, now seen corresponding path program 1 times [2020-09-24 14:57:39,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:39,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035666279] [2020-09-24 14:57:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 83 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 14:57:39,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035666279] [2020-09-24 14:57:39,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:39,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 14:57:39,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071598881] [2020-09-24 14:57:39,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:39,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:39,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:39,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:39,497 INFO L87 Difference]: Start difference. First operand 5078 states and 6024 transitions. Second operand 5 states. [2020-09-24 14:57:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:40,054 INFO L93 Difference]: Finished difference Result 12400 states and 15021 transitions. [2020-09-24 14:57:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:40,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-09-24 14:57:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:40,073 INFO L225 Difference]: With dead ends: 12400 [2020-09-24 14:57:40,073 INFO L226 Difference]: Without dead ends: 7482 [2020-09-24 14:57:40,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:57:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2020-09-24 14:57:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 5835. [2020-09-24 14:57:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-09-24 14:57:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 6908 transitions. [2020-09-24 14:57:40,272 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 6908 transitions. Word has length 266 [2020-09-24 14:57:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:40,273 INFO L479 AbstractCegarLoop]: Abstraction has 5835 states and 6908 transitions. [2020-09-24 14:57:40,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 6908 transitions. [2020-09-24 14:57:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 14:57:40,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:40,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:40,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 14:57:40,286 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:40,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:40,287 INFO L82 PathProgramCache]: Analyzing trace with hash -625071199, now seen corresponding path program 2 times [2020-09-24 14:57:40,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:40,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008848950] [2020-09-24 14:57:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:40,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 14:57:40,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008848950] [2020-09-24 14:57:40,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:40,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:40,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212188112] [2020-09-24 14:57:40,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:40,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:40,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:40,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:40,416 INFO L87 Difference]: Start difference. First operand 5835 states and 6908 transitions. Second operand 5 states. [2020-09-24 14:57:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:40,755 INFO L93 Difference]: Finished difference Result 9920 states and 11683 transitions. [2020-09-24 14:57:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:40,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-09-24 14:57:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:40,771 INFO L225 Difference]: With dead ends: 9920 [2020-09-24 14:57:40,771 INFO L226 Difference]: Without dead ends: 6999 [2020-09-24 14:57:40,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:57:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2020-09-24 14:57:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 5835. [2020-09-24 14:57:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-09-24 14:57:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 6908 transitions. [2020-09-24 14:57:40,999 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 6908 transitions. Word has length 269 [2020-09-24 14:57:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:41,000 INFO L479 AbstractCegarLoop]: Abstraction has 5835 states and 6908 transitions. [2020-09-24 14:57:41,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 6908 transitions. [2020-09-24 14:57:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 14:57:41,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:41,017 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:41,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 14:57:41,017 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:41,018 INFO L82 PathProgramCache]: Analyzing trace with hash -555087791, now seen corresponding path program 1 times [2020-09-24 14:57:41,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:41,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140827026] [2020-09-24 14:57:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 14:57:41,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140827026] [2020-09-24 14:57:41,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:41,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:57:41,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783143583] [2020-09-24 14:57:41,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:57:41,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:41,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:57:41,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:57:41,201 INFO L87 Difference]: Start difference. First operand 5835 states and 6908 transitions. Second operand 4 states. [2020-09-24 14:57:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:41,710 INFO L93 Difference]: Finished difference Result 12249 states and 14602 transitions. [2020-09-24 14:57:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:41,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2020-09-24 14:57:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:41,729 INFO L225 Difference]: With dead ends: 12249 [2020-09-24 14:57:41,730 INFO L226 Difference]: Without dead ends: 9324 [2020-09-24 14:57:41,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2020-09-24 14:57:41,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 5907. [2020-09-24 14:57:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5907 states. [2020-09-24 14:57:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5907 states to 5907 states and 6996 transitions. [2020-09-24 14:57:41,908 INFO L78 Accepts]: Start accepts. Automaton has 5907 states and 6996 transitions. Word has length 269 [2020-09-24 14:57:41,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:41,909 INFO L479 AbstractCegarLoop]: Abstraction has 5907 states and 6996 transitions. [2020-09-24 14:57:41,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:57:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5907 states and 6996 transitions. [2020-09-24 14:57:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 14:57:41,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:41,921 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:41,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 14:57:41,921 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:41,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1985209329, now seen corresponding path program 3 times [2020-09-24 14:57:41,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:41,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182841171] [2020-09-24 14:57:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 14:57:42,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182841171] [2020-09-24 14:57:42,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:42,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:42,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691067912] [2020-09-24 14:57:42,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:42,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:42,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:42,069 INFO L87 Difference]: Start difference. First operand 5907 states and 6996 transitions. Second operand 5 states. [2020-09-24 14:57:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:42,438 INFO L93 Difference]: Finished difference Result 9604 states and 11323 transitions. [2020-09-24 14:57:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:42,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-09-24 14:57:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:42,458 INFO L225 Difference]: With dead ends: 9604 [2020-09-24 14:57:42,459 INFO L226 Difference]: Without dead ends: 6611 [2020-09-24 14:57:42,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:57:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2020-09-24 14:57:42,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 5987. [2020-09-24 14:57:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5987 states. [2020-09-24 14:57:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 7084 transitions. [2020-09-24 14:57:42,664 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 7084 transitions. Word has length 269 [2020-09-24 14:57:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:42,665 INFO L479 AbstractCegarLoop]: Abstraction has 5987 states and 7084 transitions. [2020-09-24 14:57:42,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 7084 transitions. [2020-09-24 14:57:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-24 14:57:42,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:42,684 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:42,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 14:57:42,684 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1391566917, now seen corresponding path program 1 times [2020-09-24 14:57:42,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:42,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794351944] [2020-09-24 14:57:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:42,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 14:57:42,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794351944] [2020-09-24 14:57:42,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:42,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:42,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502587107] [2020-09-24 14:57:42,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:42,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:42,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:42,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:42,846 INFO L87 Difference]: Start difference. First operand 5987 states and 7084 transitions. Second operand 3 states. [2020-09-24 14:57:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:42,980 INFO L93 Difference]: Finished difference Result 11173 states and 13253 transitions. [2020-09-24 14:57:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:42,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-09-24 14:57:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:42,996 INFO L225 Difference]: With dead ends: 11173 [2020-09-24 14:57:42,996 INFO L226 Difference]: Without dead ends: 6797 [2020-09-24 14:57:43,006 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 14:57:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2020-09-24 14:57:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 6797. [2020-09-24 14:57:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6797 states. [2020-09-24 14:57:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6797 states to 6797 states and 8036 transitions. [2020-09-24 14:57:43,150 INFO L78 Accepts]: Start accepts. Automaton has 6797 states and 8036 transitions. Word has length 271 [2020-09-24 14:57:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:43,151 INFO L479 AbstractCegarLoop]: Abstraction has 6797 states and 8036 transitions. [2020-09-24 14:57:43,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6797 states and 8036 transitions. [2020-09-24 14:57:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-24 14:57:43,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:43,164 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:43,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 14:57:43,165 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1703791530, now seen corresponding path program 1 times [2020-09-24 14:57:43,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:43,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756582983] [2020-09-24 14:57:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:57:43,230 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:57:43,231 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:57:43,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 14:57:43,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:57:43 BoogieIcfgContainer [2020-09-24 14:57:43,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:57:43,307 INFO L168 Benchmark]: Toolchain (without parser) took 13264.77 ms. Allocated memory was 146.3 MB in the beginning and 644.9 MB in the end (delta: 498.6 MB). Free memory was 102.0 MB in the beginning and 229.3 MB in the end (delta: -127.3 MB). Peak memory consumption was 371.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:43,307 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:57:43,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.08 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 178.2 MB in the end (delta: -76.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:43,309 INFO L168 Benchmark]: Boogie Preprocessor took 65.05 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:43,309 INFO L168 Benchmark]: RCFGBuilder took 993.11 ms. Allocated memory is still 202.9 MB. Free memory was 175.5 MB in the beginning and 111.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:43,310 INFO L168 Benchmark]: TraceAbstraction took 11550.50 ms. Allocated memory was 202.9 MB in the beginning and 644.9 MB in the end (delta: 442.0 MB). Free memory was 111.3 MB in the beginning and 229.3 MB in the end (delta: -118.0 MB). Peak memory consumption was 324.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:43,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.08 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 178.2 MB in the end (delta: -76.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.05 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 993.11 ms. Allocated memory is still 202.9 MB. Free memory was 175.5 MB in the beginning and 111.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11550.50 ms. Allocated memory was 202.9 MB in the beginning and 644.9 MB in the end (delta: 442.0 MB). Free memory was 111.3 MB in the beginning and 229.3 MB in the end (delta: -118.0 MB). Peak memory consumption was 324.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L548] int s ; [L552] s = 12292 [L553] CALL ssl3_connect(12292) [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__bbio = __VERIFIER_nondet_int() ; [L20] int s__wbio = __VERIFIER_nondet_int() ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L27] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L28] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 = __VERIFIER_nondet_int() ; [L60] int tmp___8 = __VERIFIER_nondet_int() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] long __cil_tmp56 ; [L65] long __cil_tmp57 ; [L66] long __cil_tmp58 ; [L67] long __cil_tmp59 ; [L68] long __cil_tmp60 ; [L69] long __cil_tmp61 ; [L70] long __cil_tmp62 ; [L71] long __cil_tmp63 ; [L72] long __cil_tmp64 ; [L76] s__state = initial_state [L77] blastFlag = 0 [L78] tmp = __VERIFIER_nondet_int() [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] tmp___0 = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L90] s__in_handshake ++ [L91] COND FALSE !(tmp___1 - 12288) [L97] COND TRUE 1 [L99] state = s__state [L100] COND TRUE s__state == 12292 [L202] s__new_session = 1 [L203] s__state = 4096 [L204] s__ctx__stats__sess_connect_renegotiate ++ [L209] s__server = 0 [L210] COND TRUE cb != 0 [L214] __cil_tmp55 = s__version - 65280 [L215] COND FALSE !(__cil_tmp55 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L233] COND FALSE !(! tmp___4) [L237] COND FALSE !(! tmp___5) [L241] s__state = 4368 [L242] s__ctx__stats__sess_connect ++ [L243] s__init_num = 0 [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] 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 == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND TRUE s__state == 4368 [L247] s__shutdown = 0 [L248] ret = __VERIFIER_nondet_int() [L249] COND TRUE blastFlag == 0 [L250] blastFlag = 1 [L252] COND FALSE !(ret <= 0) [L255] s__state = 4384 [L256] s__init_num = 0 [L257] COND TRUE s__bbio != s__wbio [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] 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 == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND TRUE s__state == 4384 [L263] ret = __VERIFIER_nondet_int() [L264] COND TRUE blastFlag == 1 [L265] blastFlag = 2 [L267] COND FALSE !(ret <= 0) [L270] COND FALSE !(\read(s__hit)) [L273] s__state = 4400 [L275] s__init_num = 0 [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] 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 == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND FALSE !(s__state == 4384) [L124] COND FALSE !(s__state == 4385) [L127] COND TRUE s__state == 4400 [L279] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L282] ret = __VERIFIER_nondet_int() [L283] COND TRUE blastFlag == 2 [L284] blastFlag = 3 [L286] COND FALSE !(ret <= 0) [L290] s__state = 4416 [L291] s__init_num = 0 [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] 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 == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND FALSE !(s__state == 4384) [L124] COND FALSE !(s__state == 4385) [L127] COND FALSE !(s__state == 4400) [L130] COND FALSE !(s__state == 4401) [L133] COND TRUE s__state == 4416 [L295] ret = __VERIFIER_nondet_int() [L296] COND TRUE blastFlag == 3 [L297] blastFlag = 4 [L299] COND FALSE !(ret <= 0) [L302] s__state = 4432 [L303] s__init_num = 0 [L304] COND FALSE !(! tmp___6) [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] 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 == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND FALSE !(s__state == 4384) [L124] COND FALSE !(s__state == 4385) [L127] COND FALSE !(s__state == 4400) [L130] COND FALSE !(s__state == 4401) [L133] COND FALSE !(s__state == 4416) [L136] COND FALSE !(s__state == 4417) [L139] COND TRUE s__state == 4432 [L311] ret = __VERIFIER_nondet_int() [L312] COND TRUE blastFlag == 4 [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 383 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8517 SDtfs, 5172 SDslu, 8252 SDs, 0 SdLazy, 1951 SolverSat, 271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6797occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 7365 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 4526 NumberOfCodeBlocks, 4526 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 4235 ConstructedInterpolants, 0 QuantifiedInterpolants, 1276047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 18 PerfectInterpolantSequences, 887/892 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...