/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_3.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:57:31,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:31,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:31,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-24 14:57:31,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:31,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:31,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:31,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:31,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:31,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:31,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:31,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:31,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:31,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:31,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:31,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:31,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:31,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:31,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:31,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:31,992 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 14:57:32,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:32,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:32,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:32,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:32,021 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:32,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:32,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:32,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:32,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:32,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:32,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:32,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:32,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:32,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:32,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:32,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:32,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:32,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:32,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:32,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:32,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:32,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:32,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:32,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:32,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:32,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:32,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:32,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:32,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:32,026 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 14:57:32,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:32,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:32,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:32,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:32,514 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:32,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-09-24 14:57:32,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae66a2baa/1523dbd420244efa910f4a5b377d41ed/FLAG670906f3c [2020-09-24 14:57:33,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:33,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_3.cil-2.c [2020-09-24 14:57:33,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae66a2baa/1523dbd420244efa910f4a5b377d41ed/FLAG670906f3c [2020-09-24 14:57:33,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae66a2baa/1523dbd420244efa910f4a5b377d41ed [2020-09-24 14:57:33,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:33,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:33,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:33,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:33,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:33,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:33" (1/1) ... [2020-09-24 14:57:33,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19701add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:33, skipping insertion in model container [2020-09-24 14:57:33,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:33" (1/1) ... [2020-09-24 14:57:33,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:33,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:33,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:33,913 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:34,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:34,082 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:34,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34 WrapperNode [2020-09-24 14:57:34,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:34,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:34,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:34,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:34,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (1/1) ... [2020-09-24 14:57:34,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (1/1) ... [2020-09-24 14:57:34,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (1/1) ... [2020-09-24 14:57:34,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (1/1) ... [2020-09-24 14:57:34,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (1/1) ... [2020-09-24 14:57:34,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (1/1) ... [2020-09-24 14:57:34,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (1/1) ... [2020-09-24 14:57:34,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:34,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:34,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:34,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:34,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (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 14:57:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:34,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-24 14:57:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 14:57:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 14:57:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 14:57:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-24 14:57:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:34,443 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:35,121 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-24 14:57:35,122 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-24 14:57:35,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:35,154 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:57:35,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:35 BoogieIcfgContainer [2020-09-24 14:57:35,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:35,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:35,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:35,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:35,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:33" (1/3) ... [2020-09-24 14:57:35,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631d39f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:35, skipping insertion in model container [2020-09-24 14:57:35,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:34" (2/3) ... [2020-09-24 14:57:35,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631d39f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:35, skipping insertion in model container [2020-09-24 14:57:35,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:35" (3/3) ... [2020-09-24 14:57:35,176 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-2.c [2020-09-24 14:57:35,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:35,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:35,227 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:35,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:35,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:35,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:35,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:35,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:35,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:35,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:35,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2020-09-24 14:57:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 14:57:35,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:35,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:35,327 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:35,335 INFO L82 PathProgramCache]: Analyzing trace with hash 44117518, now seen corresponding path program 1 times [2020-09-24 14:57:35,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:35,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086349664] [2020-09-24 14:57:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,948 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 14:57:35,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086349664] [2020-09-24 14:57:35,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:35,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:35,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019295259] [2020-09-24 14:57:35,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:35,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:35,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:35,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:35,984 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 6 states. [2020-09-24 14:57:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:36,390 INFO L93 Difference]: Finished difference Result 733 states and 948 transitions. [2020-09-24 14:57:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:36,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-24 14:57:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:36,416 INFO L225 Difference]: With dead ends: 733 [2020-09-24 14:57:36,417 INFO L226 Difference]: Without dead ends: 399 [2020-09-24 14:57:36,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:57:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-09-24 14:57:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 378. [2020-09-24 14:57:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-09-24 14:57:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 437 transitions. [2020-09-24 14:57:36,519 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 437 transitions. Word has length 181 [2020-09-24 14:57:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:36,520 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 437 transitions. [2020-09-24 14:57:36,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 437 transitions. [2020-09-24 14:57:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 14:57:36,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:36,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:36,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:36,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1543076850, now seen corresponding path program 1 times [2020-09-24 14:57:36,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:36,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131708201] [2020-09-24 14:57:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:36,768 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 14:57:36,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131708201] [2020-09-24 14:57:36,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:36,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:36,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330475255] [2020-09-24 14:57:36,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:36,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:36,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:36,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:36,773 INFO L87 Difference]: Start difference. First operand 378 states and 437 transitions. Second operand 6 states. [2020-09-24 14:57:37,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:37,090 INFO L93 Difference]: Finished difference Result 654 states and 804 transitions. [2020-09-24 14:57:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:37,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-24 14:57:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:37,099 INFO L225 Difference]: With dead ends: 654 [2020-09-24 14:57:37,099 INFO L226 Difference]: Without dead ends: 442 [2020-09-24 14:57:37,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:57:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-09-24 14:57:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 391. [2020-09-24 14:57:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-09-24 14:57:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 455 transitions. [2020-09-24 14:57:37,160 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 455 transitions. Word has length 203 [2020-09-24 14:57:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:37,161 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 455 transitions. [2020-09-24 14:57:37,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 455 transitions. [2020-09-24 14:57:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 14:57:37,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:37,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:37,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:37,174 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:37,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1125063182, now seen corresponding path program 1 times [2020-09-24 14:57:37,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:37,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797711919] [2020-09-24 14:57:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,306 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 14:57:37,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797711919] [2020-09-24 14:57:37,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:37,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:37,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576944792] [2020-09-24 14:57:37,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:37,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:37,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:37,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:37,309 INFO L87 Difference]: Start difference. First operand 391 states and 455 transitions. Second operand 3 states. [2020-09-24 14:57:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:37,485 INFO L93 Difference]: Finished difference Result 644 states and 778 transitions. [2020-09-24 14:57:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:37,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-09-24 14:57:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:37,490 INFO L225 Difference]: With dead ends: 644 [2020-09-24 14:57:37,491 INFO L226 Difference]: Without dead ends: 419 [2020-09-24 14:57:37,492 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 14:57:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-09-24 14:57:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2020-09-24 14:57:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-09-24 14:57:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 478 transitions. [2020-09-24 14:57:37,511 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 478 transitions. Word has length 207 [2020-09-24 14:57:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:37,512 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 478 transitions. [2020-09-24 14:57:37,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 478 transitions. [2020-09-24 14:57:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 14:57:37,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:37,517 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, 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 14:57:37,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:37,518 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:37,518 INFO L82 PathProgramCache]: Analyzing trace with hash -144330786, now seen corresponding path program 1 times [2020-09-24 14:57:37,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:37,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773918742] [2020-09-24 14:57:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,710 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 14:57:37,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773918742] [2020-09-24 14:57:37,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:37,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:37,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13247284] [2020-09-24 14:57:37,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:37,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:37,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:37,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:37,714 INFO L87 Difference]: Start difference. First operand 409 states and 478 transitions. Second operand 3 states. [2020-09-24 14:57:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:37,786 INFO L93 Difference]: Finished difference Result 888 states and 1088 transitions. [2020-09-24 14:57:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:37,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2020-09-24 14:57:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:37,791 INFO L225 Difference]: With dead ends: 888 [2020-09-24 14:57:37,791 INFO L226 Difference]: Without dead ends: 645 [2020-09-24 14:57:37,793 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 14:57:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-09-24 14:57:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2020-09-24 14:57:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-09-24 14:57:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 775 transitions. [2020-09-24 14:57:37,824 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 775 transitions. Word has length 214 [2020-09-24 14:57:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:37,825 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 775 transitions. [2020-09-24 14:57:37,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 775 transitions. [2020-09-24 14:57:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 14:57:37,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:37,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:37,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:37,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1130092021, now seen corresponding path program 1 times [2020-09-24 14:57:37,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:37,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191814557] [2020-09-24 14:57:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,008 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 14:57:38,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191814557] [2020-09-24 14:57:38,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:38,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:38,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85062086] [2020-09-24 14:57:38,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:38,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:38,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:38,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:38,012 INFO L87 Difference]: Start difference. First operand 645 states and 775 transitions. Second operand 3 states. [2020-09-24 14:57:38,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:38,264 INFO L93 Difference]: Finished difference Result 1188 states and 1470 transitions. [2020-09-24 14:57:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:38,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-24 14:57:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:38,272 INFO L225 Difference]: With dead ends: 1188 [2020-09-24 14:57:38,272 INFO L226 Difference]: Without dead ends: 709 [2020-09-24 14:57:38,275 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 14:57:38,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-09-24 14:57:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 685. [2020-09-24 14:57:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-09-24 14:57:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 825 transitions. [2020-09-24 14:57:38,314 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 825 transitions. Word has length 229 [2020-09-24 14:57:38,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:38,315 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 825 transitions. [2020-09-24 14:57:38,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 825 transitions. [2020-09-24 14:57:38,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 14:57:38,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:38,324 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, 1, 1, 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 14:57:38,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:38,325 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:38,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2121264617, now seen corresponding path program 1 times [2020-09-24 14:57:38,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:38,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215909298] [2020-09-24 14:57:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,528 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 14:57:38,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215909298] [2020-09-24 14:57:38,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:38,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:38,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706855302] [2020-09-24 14:57:38,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:38,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:38,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:38,532 INFO L87 Difference]: Start difference. First operand 685 states and 825 transitions. Second operand 3 states. [2020-09-24 14:57:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:38,567 INFO L93 Difference]: Finished difference Result 1653 states and 2033 transitions. [2020-09-24 14:57:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:38,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-09-24 14:57:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:38,577 INFO L225 Difference]: With dead ends: 1653 [2020-09-24 14:57:38,578 INFO L226 Difference]: Without dead ends: 1134 [2020-09-24 14:57:38,580 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 14:57:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-09-24 14:57:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1132. [2020-09-24 14:57:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-09-24 14:57:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1369 transitions. [2020-09-24 14:57:38,632 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1369 transitions. Word has length 236 [2020-09-24 14:57:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:38,634 INFO L479 AbstractCegarLoop]: Abstraction has 1132 states and 1369 transitions. [2020-09-24 14:57:38,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1369 transitions. [2020-09-24 14:57:38,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 14:57:38,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:38,643 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, 1, 1, 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 14:57:38,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:38,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1692173170, now seen corresponding path program 1 times [2020-09-24 14:57:38,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:38,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464159720] [2020-09-24 14:57:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:38,830 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 14:57:38,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464159720] [2020-09-24 14:57:38,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:38,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:38,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122159510] [2020-09-24 14:57:38,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:38,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:38,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:38,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:38,834 INFO L87 Difference]: Start difference. First operand 1132 states and 1369 transitions. Second operand 3 states. [2020-09-24 14:57:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:38,892 INFO L93 Difference]: Finished difference Result 2116 states and 2590 transitions. [2020-09-24 14:57:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:38,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-24 14:57:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:38,899 INFO L225 Difference]: With dead ends: 2116 [2020-09-24 14:57:38,900 INFO L226 Difference]: Without dead ends: 1150 [2020-09-24 14:57:38,904 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 14:57:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-09-24 14:57:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1140. [2020-09-24 14:57:38,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2020-09-24 14:57:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1373 transitions. [2020-09-24 14:57:38,963 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1373 transitions. Word has length 237 [2020-09-24 14:57:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:38,965 INFO L479 AbstractCegarLoop]: Abstraction has 1140 states and 1373 transitions. [2020-09-24 14:57:38,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1373 transitions. [2020-09-24 14:57:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 14:57:38,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:38,974 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, 1, 1, 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 14:57:38,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:38,975 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1154899678, now seen corresponding path program 1 times [2020-09-24 14:57:38,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:38,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282313210] [2020-09-24 14:57:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,105 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 14:57:39,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282313210] [2020-09-24 14:57:39,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:39,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:39,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582509260] [2020-09-24 14:57:39,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:39,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:39,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:39,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:39,108 INFO L87 Difference]: Start difference. First operand 1140 states and 1373 transitions. Second operand 3 states. [2020-09-24 14:57:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:39,179 INFO L93 Difference]: Finished difference Result 3074 states and 3757 transitions. [2020-09-24 14:57:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:39,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-09-24 14:57:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:39,191 INFO L225 Difference]: With dead ends: 3074 [2020-09-24 14:57:39,192 INFO L226 Difference]: Without dead ends: 2100 [2020-09-24 14:57:39,194 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 14:57:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2020-09-24 14:57:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2098. [2020-09-24 14:57:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-09-24 14:57:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2541 transitions. [2020-09-24 14:57:39,270 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2541 transitions. Word has length 239 [2020-09-24 14:57:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:39,270 INFO L479 AbstractCegarLoop]: Abstraction has 2098 states and 2541 transitions. [2020-09-24 14:57:39,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2541 transitions. [2020-09-24 14:57:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 14:57:39,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:39,276 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, 1, 1, 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 14:57:39,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:39,277 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:39,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1231609828, now seen corresponding path program 1 times [2020-09-24 14:57:39,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:39,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668908770] [2020-09-24 14:57:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,464 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 14:57:39,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668908770] [2020-09-24 14:57:39,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:39,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:39,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447482721] [2020-09-24 14:57:39,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:39,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:39,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:39,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:39,472 INFO L87 Difference]: Start difference. First operand 2098 states and 2541 transitions. Second operand 3 states. [2020-09-24 14:57:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:39,544 INFO L93 Difference]: Finished difference Result 3089 states and 3751 transitions. [2020-09-24 14:57:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:39,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-09-24 14:57:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:39,561 INFO L225 Difference]: With dead ends: 3089 [2020-09-24 14:57:39,565 INFO L226 Difference]: Without dead ends: 2115 [2020-09-24 14:57:39,572 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 14:57:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-09-24 14:57:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2113. [2020-09-24 14:57:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-09-24 14:57:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2547 transitions. [2020-09-24 14:57:39,674 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2547 transitions. Word has length 239 [2020-09-24 14:57:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:39,675 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2547 transitions. [2020-09-24 14:57:39,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2547 transitions. [2020-09-24 14:57:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 14:57:39,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:39,684 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, 1, 1, 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 14:57:39,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:39,684 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:39,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2054606457, now seen corresponding path program 1 times [2020-09-24 14:57:39,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:39,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225474426] [2020-09-24 14:57:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,869 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 14:57:39,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225474426] [2020-09-24 14:57:39,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:39,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:39,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923030873] [2020-09-24 14:57:39,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:39,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:39,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:39,873 INFO L87 Difference]: Start difference. First operand 2113 states and 2547 transitions. Second operand 3 states. [2020-09-24 14:57:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:39,999 INFO L93 Difference]: Finished difference Result 4045 states and 4926 transitions. [2020-09-24 14:57:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:39,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-24 14:57:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:40,015 INFO L225 Difference]: With dead ends: 4045 [2020-09-24 14:57:40,016 INFO L226 Difference]: Without dead ends: 3068 [2020-09-24 14:57:40,019 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 14:57:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-09-24 14:57:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2020-09-24 14:57:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-09-24 14:57:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 3710 transitions. [2020-09-24 14:57:40,120 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 3710 transitions. Word has length 240 [2020-09-24 14:57:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:40,121 INFO L479 AbstractCegarLoop]: Abstraction has 3068 states and 3710 transitions. [2020-09-24 14:57:40,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 3710 transitions. [2020-09-24 14:57:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-24 14:57:40,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:40,129 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, 1, 1, 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 14:57:40,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:40,130 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:40,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1762569168, now seen corresponding path program 1 times [2020-09-24 14:57:40,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:40,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212954517] [2020-09-24 14:57:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:40,279 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 14:57:40,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212954517] [2020-09-24 14:57:40,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:40,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:40,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006403946] [2020-09-24 14:57:40,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:40,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:40,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:40,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:40,282 INFO L87 Difference]: Start difference. First operand 3068 states and 3710 transitions. Second operand 3 states. [2020-09-24 14:57:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:40,597 INFO L93 Difference]: Finished difference Result 6702 states and 8354 transitions. [2020-09-24 14:57:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:40,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-09-24 14:57:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:40,617 INFO L225 Difference]: With dead ends: 6702 [2020-09-24 14:57:40,617 INFO L226 Difference]: Without dead ends: 3803 [2020-09-24 14:57:40,624 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 14:57:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2020-09-24 14:57:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3545. [2020-09-24 14:57:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-09-24 14:57:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4226 transitions. [2020-09-24 14:57:40,738 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4226 transitions. Word has length 250 [2020-09-24 14:57:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:40,739 INFO L479 AbstractCegarLoop]: Abstraction has 3545 states and 4226 transitions. [2020-09-24 14:57:40,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4226 transitions. [2020-09-24 14:57:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-24 14:57:40,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:40,748 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, 1, 1, 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 14:57:40,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:57:40,748 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash -81032144, now seen corresponding path program 1 times [2020-09-24 14:57:40,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:40,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375130734] [2020-09-24 14:57:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:40,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:40,869 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 14:57:40,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375130734] [2020-09-24 14:57:40,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:40,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:40,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27635070] [2020-09-24 14:57:40,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:40,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:40,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:40,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:40,872 INFO L87 Difference]: Start difference. First operand 3545 states and 4226 transitions. Second operand 3 states. [2020-09-24 14:57:41,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:41,115 INFO L93 Difference]: Finished difference Result 7246 states and 8728 transitions. [2020-09-24 14:57:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:41,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-09-24 14:57:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:41,134 INFO L225 Difference]: With dead ends: 7246 [2020-09-24 14:57:41,135 INFO L226 Difference]: Without dead ends: 3882 [2020-09-24 14:57:41,141 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 14:57:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2020-09-24 14:57:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3758. [2020-09-24 14:57:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-09-24 14:57:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4454 transitions. [2020-09-24 14:57:41,247 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4454 transitions. Word has length 250 [2020-09-24 14:57:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:41,248 INFO L479 AbstractCegarLoop]: Abstraction has 3758 states and 4454 transitions. [2020-09-24 14:57:41,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4454 transitions. [2020-09-24 14:57:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-24 14:57:41,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:41,258 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, 1, 1, 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 14:57:41,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:57:41,258 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:41,259 INFO L82 PathProgramCache]: Analyzing trace with hash 713835900, now seen corresponding path program 1 times [2020-09-24 14:57:41,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:41,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546072419] [2020-09-24 14:57:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 14:57:41,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546072419] [2020-09-24 14:57:41,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:41,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:41,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947274214] [2020-09-24 14:57:41,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:41,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:41,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:41,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:41,387 INFO L87 Difference]: Start difference. First operand 3758 states and 4454 transitions. Second operand 5 states. [2020-09-24 14:57:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:41,666 INFO L93 Difference]: Finished difference Result 6233 states and 7321 transitions. [2020-09-24 14:57:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:41,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-09-24 14:57:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:41,686 INFO L225 Difference]: With dead ends: 6233 [2020-09-24 14:57:41,686 INFO L226 Difference]: Without dead ends: 4430 [2020-09-24 14:57:41,692 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 14:57:41,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-09-24 14:57:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 3860. [2020-09-24 14:57:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3860 states. [2020-09-24 14:57:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 4565 transitions. [2020-09-24 14:57:41,823 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 4565 transitions. Word has length 265 [2020-09-24 14:57:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:41,824 INFO L479 AbstractCegarLoop]: Abstraction has 3860 states and 4565 transitions. [2020-09-24 14:57:41,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 4565 transitions. [2020-09-24 14:57:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-24 14:57:41,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:41,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 14:57:41,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 14:57:41,837 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:41,837 INFO L82 PathProgramCache]: Analyzing trace with hash -700825412, now seen corresponding path program 2 times [2020-09-24 14:57:41,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:41,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440720817] [2020-09-24 14:57:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 14:57:42,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440720817] [2020-09-24 14:57:42,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:42,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:42,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276952094] [2020-09-24 14:57:42,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:42,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:42,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:42,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:42,019 INFO L87 Difference]: Start difference. First operand 3860 states and 4565 transitions. Second operand 5 states. [2020-09-24 14:57:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:42,336 INFO L93 Difference]: Finished difference Result 6567 states and 7700 transitions. [2020-09-24 14:57:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:42,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-09-24 14:57:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:42,357 INFO L225 Difference]: With dead ends: 6567 [2020-09-24 14:57:42,357 INFO L226 Difference]: Without dead ends: 4662 [2020-09-24 14:57:42,363 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 14:57:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2020-09-24 14:57:42,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 3897. [2020-09-24 14:57:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-09-24 14:57:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4611 transitions. [2020-09-24 14:57:42,476 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4611 transitions. Word has length 268 [2020-09-24 14:57:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:42,477 INFO L479 AbstractCegarLoop]: Abstraction has 3897 states and 4611 transitions. [2020-09-24 14:57:42,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4611 transitions. [2020-09-24 14:57:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 14:57:42,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:42,486 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:42,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 14:57:42,487 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:42,487 INFO L82 PathProgramCache]: Analyzing trace with hash 19964066, now seen corresponding path program 1 times [2020-09-24 14:57:42,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:42,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884306103] [2020-09-24 14:57:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 14:57:42,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884306103] [2020-09-24 14:57:42,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:42,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:42,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139737920] [2020-09-24 14:57:42,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:42,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:42,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:42,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:42,616 INFO L87 Difference]: Start difference. First operand 3897 states and 4611 transitions. Second operand 5 states. [2020-09-24 14:57:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:42,998 INFO L93 Difference]: Finished difference Result 6406 states and 7521 transitions. [2020-09-24 14:57:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:42,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-09-24 14:57:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:43,012 INFO L225 Difference]: With dead ends: 6406 [2020-09-24 14:57:43,012 INFO L226 Difference]: Without dead ends: 4464 [2020-09-24 14:57:43,018 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 14:57:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2020-09-24 14:57:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3803. [2020-09-24 14:57:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3803 states. [2020-09-24 14:57:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 4502 transitions. [2020-09-24 14:57:43,157 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 4502 transitions. Word has length 269 [2020-09-24 14:57:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:43,158 INFO L479 AbstractCegarLoop]: Abstraction has 3803 states and 4502 transitions. [2020-09-24 14:57:43,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 4502 transitions. [2020-09-24 14:57:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 14:57:43,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:43,168 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, 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 14:57:43,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 14:57:43,168 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash -76751101, now seen corresponding path program 1 times [2020-09-24 14:57:43,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:43,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896004478] [2020-09-24 14:57:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:43,300 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 14:57:43,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896004478] [2020-09-24 14:57:43,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:43,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:43,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095024055] [2020-09-24 14:57:43,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:43,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:43,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:43,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:43,303 INFO L87 Difference]: Start difference. First operand 3803 states and 4502 transitions. Second operand 3 states. [2020-09-24 14:57:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:43,506 INFO L93 Difference]: Finished difference Result 7744 states and 9274 transitions. [2020-09-24 14:57:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:43,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2020-09-24 14:57:43,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:43,517 INFO L225 Difference]: With dead ends: 7744 [2020-09-24 14:57:43,517 INFO L226 Difference]: Without dead ends: 4122 [2020-09-24 14:57:43,525 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 14:57:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2020-09-24 14:57:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4040. [2020-09-24 14:57:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2020-09-24 14:57:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 4754 transitions. [2020-09-24 14:57:43,610 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 4754 transitions. Word has length 269 [2020-09-24 14:57:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:43,611 INFO L479 AbstractCegarLoop]: Abstraction has 4040 states and 4754 transitions. [2020-09-24 14:57:43,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 4754 transitions. [2020-09-24 14:57:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-24 14:57:43,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:43,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 14:57:43,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 14:57:43,621 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash 360016174, now seen corresponding path program 1 times [2020-09-24 14:57:43,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:43,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352785525] [2020-09-24 14:57:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:43,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 14:57:43,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352785525] [2020-09-24 14:57:43,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:43,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:57:43,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729677975] [2020-09-24 14:57:43,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:57:43,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:43,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:57:43,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:57:43,754 INFO L87 Difference]: Start difference. First operand 4040 states and 4754 transitions. Second operand 4 states. [2020-09-24 14:57:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:44,237 INFO L93 Difference]: Finished difference Result 8465 states and 10020 transitions. [2020-09-24 14:57:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:44,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-09-24 14:57:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:44,251 INFO L225 Difference]: With dead ends: 8465 [2020-09-24 14:57:44,251 INFO L226 Difference]: Without dead ends: 6494 [2020-09-24 14:57:44,257 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 14:57:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-09-24 14:57:44,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 4070. [2020-09-24 14:57:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4070 states. [2020-09-24 14:57:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 4793 transitions. [2020-09-24 14:57:44,355 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 4793 transitions. Word has length 271 [2020-09-24 14:57:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:44,356 INFO L479 AbstractCegarLoop]: Abstraction has 4070 states and 4793 transitions. [2020-09-24 14:57:44,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:57:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 4793 transitions. [2020-09-24 14:57:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-24 14:57:44,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:44,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 14:57:44,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 14:57:44,367 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:44,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:44,367 INFO L82 PathProgramCache]: Analyzing trace with hash 663575758, now seen corresponding path program 1 times [2020-09-24 14:57:44,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:44,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463253663] [2020-09-24 14:57:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 14:57:44,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463253663] [2020-09-24 14:57:44,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:44,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:57:44,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012834777] [2020-09-24 14:57:44,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:57:44,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:44,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:57:44,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:57:44,493 INFO L87 Difference]: Start difference. First operand 4070 states and 4793 transitions. Second operand 4 states. [2020-09-24 14:57:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:44,918 INFO L93 Difference]: Finished difference Result 11247 states and 13651 transitions. [2020-09-24 14:57:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:44,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2020-09-24 14:57:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:44,933 INFO L225 Difference]: With dead ends: 11247 [2020-09-24 14:57:44,933 INFO L226 Difference]: Without dead ends: 7358 [2020-09-24 14:57:44,942 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 14:57:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2020-09-24 14:57:45,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4556. [2020-09-24 14:57:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-09-24 14:57:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 5378 transitions. [2020-09-24 14:57:45,055 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 5378 transitions. Word has length 271 [2020-09-24 14:57:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:45,055 INFO L479 AbstractCegarLoop]: Abstraction has 4556 states and 5378 transitions. [2020-09-24 14:57:45,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:57:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 5378 transitions. [2020-09-24 14:57:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-24 14:57:45,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:45,067 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:45,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 14:57:45,068 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash 651686925, now seen corresponding path program 1 times [2020-09-24 14:57:45,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:45,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245662077] [2020-09-24 14:57:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 14:57:45,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245662077] [2020-09-24 14:57:45,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:45,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:45,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476227410] [2020-09-24 14:57:45,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:45,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:45,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:45,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:45,274 INFO L87 Difference]: Start difference. First operand 4556 states and 5378 transitions. Second operand 3 states. [2020-09-24 14:57:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:45,594 INFO L93 Difference]: Finished difference Result 9759 states and 11774 transitions. [2020-09-24 14:57:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:45,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2020-09-24 14:57:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:45,609 INFO L225 Difference]: With dead ends: 9759 [2020-09-24 14:57:45,609 INFO L226 Difference]: Without dead ends: 5372 [2020-09-24 14:57:45,620 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 14:57:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2020-09-24 14:57:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5009. [2020-09-24 14:57:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5009 states. [2020-09-24 14:57:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 5906 transitions. [2020-09-24 14:57:45,738 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 5906 transitions. Word has length 291 [2020-09-24 14:57:45,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:45,739 INFO L479 AbstractCegarLoop]: Abstraction has 5009 states and 5906 transitions. [2020-09-24 14:57:45,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 5906 transitions. [2020-09-24 14:57:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-24 14:57:45,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:45,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:45,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 14:57:45,752 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:45,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2093654891, now seen corresponding path program 1 times [2020-09-24 14:57:45,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:45,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507044767] [2020-09-24 14:57:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 14:57:45,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507044767] [2020-09-24 14:57:45,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:45,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:45,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351583773] [2020-09-24 14:57:45,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:45,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:45,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:45,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:45,919 INFO L87 Difference]: Start difference. First operand 5009 states and 5906 transitions. Second operand 3 states. [2020-09-24 14:57:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:46,037 INFO L93 Difference]: Finished difference Result 9837 states and 11644 transitions. [2020-09-24 14:57:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:46,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2020-09-24 14:57:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:46,051 INFO L225 Difference]: With dead ends: 9837 [2020-09-24 14:57:46,051 INFO L226 Difference]: Without dead ends: 6611 [2020-09-24 14:57:46,058 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 14:57:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2020-09-24 14:57:46,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 6611. [2020-09-24 14:57:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6611 states. [2020-09-24 14:57:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 7805 transitions. [2020-09-24 14:57:46,181 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 7805 transitions. Word has length 293 [2020-09-24 14:57:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:46,182 INFO L479 AbstractCegarLoop]: Abstraction has 6611 states and 7805 transitions. [2020-09-24 14:57:46,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 7805 transitions. [2020-09-24 14:57:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-09-24 14:57:46,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:46,196 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, 1, 1, 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 14:57:46,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 14:57:46,197 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:46,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1985620780, now seen corresponding path program 1 times [2020-09-24 14:57:46,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:46,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700901292] [2020-09-24 14:57:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,360 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 14:57:46,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700901292] [2020-09-24 14:57:46,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:46,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:46,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305182101] [2020-09-24 14:57:46,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:46,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:46,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:46,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:46,363 INFO L87 Difference]: Start difference. First operand 6611 states and 7805 transitions. Second operand 3 states. [2020-09-24 14:57:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:46,492 INFO L93 Difference]: Finished difference Result 12305 states and 14562 transitions. [2020-09-24 14:57:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:46,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2020-09-24 14:57:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:46,508 INFO L225 Difference]: With dead ends: 12305 [2020-09-24 14:57:46,508 INFO L226 Difference]: Without dead ends: 7477 [2020-09-24 14:57:46,517 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 14:57:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2020-09-24 14:57:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7477. [2020-09-24 14:57:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7477 states. [2020-09-24 14:57:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 8822 transitions. [2020-09-24 14:57:46,654 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 8822 transitions. Word has length 298 [2020-09-24 14:57:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:46,655 INFO L479 AbstractCegarLoop]: Abstraction has 7477 states and 8822 transitions. [2020-09-24 14:57:46,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 8822 transitions. [2020-09-24 14:57:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-24 14:57:46,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:46,666 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, 1, 1, 1, 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 14:57:46,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 14:57:46,666 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:46,667 INFO L82 PathProgramCache]: Analyzing trace with hash -638739787, now seen corresponding path program 1 times [2020-09-24 14:57:46,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:46,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421087296] [2020-09-24 14:57:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:57:46,735 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:57:46,736 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:57:46,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 14:57:46,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:57:46 BoogieIcfgContainer [2020-09-24 14:57:46,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:57:46,804 INFO L168 Benchmark]: Toolchain (without parser) took 13276.52 ms. Allocated memory was 139.5 MB in the beginning and 706.7 MB in the end (delta: 567.3 MB). Free memory was 101.4 MB in the beginning and 484.6 MB in the end (delta: -383.2 MB). Peak memory consumption was 184.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:46,807 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:57:46,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.88 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 176.8 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:46,809 INFO L168 Benchmark]: Boogie Preprocessor took 70.64 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 174.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:46,809 INFO L168 Benchmark]: RCFGBuilder took 1008.92 ms. Allocated memory is still 201.9 MB. Free memory was 173.8 MB in the beginning and 106.2 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:46,810 INFO L168 Benchmark]: TraceAbstraction took 11629.41 ms. Allocated memory was 201.9 MB in the beginning and 706.7 MB in the end (delta: 504.9 MB). Free memory was 106.2 MB in the beginning and 484.6 MB in the end (delta: -378.5 MB). Peak memory consumption was 126.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:46,817 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 555.88 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 176.8 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.64 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 174.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1008.92 ms. Allocated memory is still 201.9 MB. Free memory was 173.8 MB in the beginning and 106.2 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11629.41 ms. Allocated memory was 201.9 MB in the beginning and 706.7 MB in the end (delta: 504.9 MB). Free memory was 106.2 MB in the beginning and 484.6 MB in the end (delta: -378.5 MB). Peak memory consumption was 126.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L578] int s ; [L582] s = 12292 [L583] CALL ssl3_connect(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__bbio = __VERIFIER_nondet_int() ; [L21] int s__wbio = __VERIFIER_nondet_int() ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L28] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L32] int s__s3__change_cipher_spec ; [L33] int s__s3__flags = __VERIFIER_nondet_int() ; [L34] int s__s3__delay_buf_pop_ret ; [L35] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L42] int s__session__cipher ; [L43] int s__session__compress_meth ; [L44] int buf ; [L45] unsigned long tmp ; [L46] unsigned long l ; [L47] int num1 = __VERIFIER_nondet_int() ; [L48] int cb ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int tmp___0 ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] int tmp___8 = __VERIFIER_nondet_int() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] void *__cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L68] void *__cil_tmp59 ; [L69] unsigned long __cil_tmp60 ; [L70] unsigned long __cil_tmp61 ; [L71] unsigned long __cil_tmp62 ; [L72] unsigned long __cil_tmp63 ; [L73] unsigned long __cil_tmp64 ; [L74] long __cil_tmp65 = __VERIFIER_nondet_long() ; [L75] long __cil_tmp66 ; [L76] long __cil_tmp67 ; [L77] long __cil_tmp68 ; [L78] long __cil_tmp69 ; [L79] long __cil_tmp70 = __VERIFIER_nondet_long() ; [L80] long __cil_tmp71 ; [L81] long __cil_tmp72 ; [L82] long __cil_tmp73 ; [L83] long __cil_tmp74 ; [L87] s__state = initial_state [L88] blastFlag = 0 [L89] tmp = __VERIFIER_nondet_int() [L90] cb = 0 [L91] ret = -1 [L92] skip = 0 [L93] tmp___0 = 0 [L94] COND TRUE s__info_callback != 0 [L95] cb = s__info_callback [L101] s__in_handshake ++ [L102] COND FALSE !(tmp___1 + 12288) [L108] COND TRUE 1 [L110] state = s__state [L111] COND TRUE s__state == 12292 [L213] s__new_session = 1 [L214] s__state = 4096 [L215] s__ctx__stats__sess_connect_renegotiate ++ [L220] s__server = 0 [L221] COND TRUE cb != 0 [L225] __cil_tmp55 = s__version + 65280 [L226] COND FALSE !(__cil_tmp55 != 768) [L231] s__type = 4096 [L233] __cil_tmp56 = (void *)0 [L234] __cil_tmp57 = (unsigned long )__cil_tmp56 [L235] __cil_tmp58 = (unsigned long )s__init_buf___0 [L236] COND FALSE !(__cil_tmp58 == __cil_tmp57) [L254] COND FALSE !(! tmp___4) [L258] COND FALSE !(! tmp___5) [L262] s__state = 4368 [L263] s__ctx__stats__sess_connect ++ [L264] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND TRUE s__state == 4368 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] s__state = 4384 [L277] s__init_num = 0 [L279] __cil_tmp62 = (unsigned long )s__wbio [L280] __cil_tmp63 = (unsigned long )s__bbio [L281] COND TRUE __cil_tmp63 != __cil_tmp62 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND TRUE s__state == 4384 [L288] ret = __VERIFIER_nondet_int() [L289] COND TRUE blastFlag == 1 [L290] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L299] COND FALSE !(\read(s__hit)) [L302] s__state = 4400 [L304] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND TRUE s__state == 4400 [L309] __cil_tmp64 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L310] COND FALSE !(__cil_tmp64 + 256UL) [L313] ret = __VERIFIER_nondet_int() [L314] COND TRUE blastFlag == 2 [L315] blastFlag = 3 [L317] COND FALSE !(ret <= 0) [L322] s__state = 4416 [L323] s__init_num = 0 [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND FALSE !(s__state == 4400) [L141] COND FALSE !(s__state == 4401) [L144] COND TRUE s__state == 4416 [L327] ret = __VERIFIER_nondet_int() [L328] COND TRUE blastFlag == 3 [L329] blastFlag = 4 [L331] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] s__init_num = 0 [L336] COND FALSE !(! tmp___6) [L545] COND FALSE !(! s__s3__tmp__reuse_message) [L562] skip = 0 [L108] COND TRUE 1 [L110] state = s__state [L111] COND FALSE !(s__state == 12292) [L114] COND FALSE !(s__state == 16384) [L117] COND FALSE !(s__state == 4096) [L120] COND FALSE !(s__state == 20480) [L123] COND FALSE !(s__state == 4099) [L126] COND FALSE !(s__state == 4368) [L129] COND FALSE !(s__state == 4369) [L132] COND FALSE !(s__state == 4384) [L135] COND FALSE !(s__state == 4385) [L138] COND FALSE !(s__state == 4400) [L141] COND FALSE !(s__state == 4401) [L144] COND FALSE !(s__state == 4416) [L147] COND FALSE !(s__state == 4417) [L150] COND TRUE s__state == 4432 [L343] ret = __VERIFIER_nondet_int() [L344] COND TRUE blastFlag == 4 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 414 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.4s, OverallIterations: 22, TraceHistogramMax: 6, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10117 SDtfs, 6095 SDslu, 10616 SDs, 0 SdLazy, 2332 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7477occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 21 MinimizatonAttempts, 8171 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 5519 NumberOfCodeBlocks, 5519 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 5199 ConstructedInterpolants, 0 QuantifiedInterpolants, 1726565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 924/924 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...