/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:51,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:51,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:51,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:51,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:51,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:51,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:51,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:51,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:51,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:51,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:51,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:51,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:51,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:51,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:51,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:51,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:51,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:51,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:51,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:51,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:51,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:51,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:51,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:51,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:51,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:51,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:51,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:51,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:51,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:51,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:51,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:51,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:51,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:51,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:51,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:51,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:51,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:51,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:51,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:51,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:51,077 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 21:30:51,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:51,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:51,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:51,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:51,134 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:51,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:51,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:51,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:51,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:51,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:51,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:51,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:51,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:51,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:51,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:51,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:51,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:51,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:51,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:51,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:51,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:51,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:51,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:51,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:51,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:51,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:51,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:51,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:51,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:51,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:51,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:51,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:51,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:51,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:51,703 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:51,704 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-09-24 21:30:51,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/258cf8adc/b921e0342751441eaa003485a387cead/FLAGe60a784f5 [2020-09-24 21:30:52,352 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:52,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-09-24 21:30:52,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/258cf8adc/b921e0342751441eaa003485a387cead/FLAGe60a784f5 [2020-09-24 21:30:52,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/258cf8adc/b921e0342751441eaa003485a387cead [2020-09-24 21:30:52,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:52,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:52,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:52,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:52,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:52,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:52" (1/1) ... [2020-09-24 21:30:52,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa62206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:52, skipping insertion in model container [2020-09-24 21:30:52,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:52" (1/1) ... [2020-09-24 21:30:52,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:52,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:53,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:53,019 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:53,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:53,190 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:53,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53 WrapperNode [2020-09-24 21:30:53,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:53,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:53,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:53,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:53,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:53,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:53,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:53,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:53,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (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 21:30:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:53,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-24 21:30:53,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:30:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 21:30:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-24 21:30:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:53,510 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 21:30:54,120 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-09-24 21:30:54,120 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-09-24 21:30:54,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:54,146 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:30:54,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:54 BoogieIcfgContainer [2020-09-24 21:30:54,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:54,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:54,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:54,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:54,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:52" (1/3) ... [2020-09-24 21:30:54,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72269862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:54, skipping insertion in model container [2020-09-24 21:30:54,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53" (2/3) ... [2020-09-24 21:30:54,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72269862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:54, skipping insertion in model container [2020-09-24 21:30:54,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:54" (3/3) ... [2020-09-24 21:30:54,171 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-09-24 21:30:54,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:54,192 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:54,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:54,245 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:54,245 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:54,245 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:54,245 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:54,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:54,245 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:54,246 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:54,246 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states. [2020-09-24 21:30:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:30:54,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:54,293 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] [2020-09-24 21:30:54,293 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:54,301 INFO L82 PathProgramCache]: Analyzing trace with hash 663725490, now seen corresponding path program 1 times [2020-09-24 21:30:54,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:54,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226805293] [2020-09-24 21:30:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 21:30:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-24 21:30:54,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-09-24 21:30:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:30:54,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:30:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:55,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:55,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:55,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:30:55,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:55,123 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 21:30:55,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226805293] [2020-09-24 21:30:55,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:55,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:30:55,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364696033] [2020-09-24 21:30:55,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:30:55,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:55,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:30:55,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:30:55,157 INFO L87 Difference]: Start difference. First operand 350 states. Second operand 3 states. [2020-09-24 21:30:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:55,388 INFO L93 Difference]: Finished difference Result 577 states and 753 transitions. [2020-09-24 21:30:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:30:55,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 21:30:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:55,410 INFO L225 Difference]: With dead ends: 577 [2020-09-24 21:30:55,411 INFO L226 Difference]: Without dead ends: 317 [2020-09-24 21:30:55,417 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 21:30:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-24 21:30:55,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-09-24 21:30:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-09-24 21:30:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 375 transitions. [2020-09-24 21:30:55,506 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 375 transitions. Word has length 142 [2020-09-24 21:30:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:55,509 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 375 transitions. [2020-09-24 21:30:55,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:30:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 375 transitions. [2020-09-24 21:30:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 21:30:55,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:55,520 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] [2020-09-24 21:30:55,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:55,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash 980116923, now seen corresponding path program 1 times [2020-09-24 21:30:55,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:55,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649709473] [2020-09-24 21:30:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:55,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:55,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 21:30:55,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:55,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-24 21:30:55,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-24 21:30:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:30:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:56,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:56,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:30:56,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:56,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 31 [2020-09-24 21:30:56,101 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 21:30:56,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649709473] [2020-09-24 21:30:56,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:56,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:30:56,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757355211] [2020-09-24 21:30:56,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:30:56,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:56,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:30:56,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:30:56,105 INFO L87 Difference]: Start difference. First operand 317 states and 375 transitions. Second operand 3 states. [2020-09-24 21:30:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:56,270 INFO L93 Difference]: Finished difference Result 534 states and 657 transitions. [2020-09-24 21:30:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:30:56,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-09-24 21:30:56,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:56,274 INFO L225 Difference]: With dead ends: 534 [2020-09-24 21:30:56,274 INFO L226 Difference]: Without dead ends: 345 [2020-09-24 21:30:56,276 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 21:30:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-09-24 21:30:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 335. [2020-09-24 21:30:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-24 21:30:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 398 transitions. [2020-09-24 21:30:56,294 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 398 transitions. Word has length 160 [2020-09-24 21:30:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:56,295 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 398 transitions. [2020-09-24 21:30:56,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:30:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 398 transitions. [2020-09-24 21:30:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 21:30:56,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:56,297 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] [2020-09-24 21:30:56,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:56,298 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1724791051, now seen corresponding path program 1 times [2020-09-24 21:30:56,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:56,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500210787] [2020-09-24 21:30:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:56,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:56,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 21:30:56,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:56,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-24 21:30:56,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:56,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:30:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-24 21:30:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:30:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:56,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:56,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:56,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:30:56,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:56,823 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 21:30:56,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500210787] [2020-09-24 21:30:56,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:56,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:56,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946691700] [2020-09-24 21:30:56,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:56,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:56,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:56,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:56,826 INFO L87 Difference]: Start difference. First operand 335 states and 398 transitions. Second operand 4 states. [2020-09-24 21:30:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:57,140 INFO L93 Difference]: Finished difference Result 776 states and 963 transitions. [2020-09-24 21:30:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:30:57,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-24 21:30:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:57,144 INFO L225 Difference]: With dead ends: 776 [2020-09-24 21:30:57,144 INFO L226 Difference]: Without dead ends: 569 [2020-09-24 21:30:57,145 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 21:30:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-09-24 21:30:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 338. [2020-09-24 21:30:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-09-24 21:30:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 401 transitions. [2020-09-24 21:30:57,161 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 401 transitions. Word has length 167 [2020-09-24 21:30:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:57,161 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 401 transitions. [2020-09-24 21:30:57,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 401 transitions. [2020-09-24 21:30:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 21:30:57,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:57,164 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] [2020-09-24 21:30:57,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:30:57,165 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2007825220, now seen corresponding path program 1 times [2020-09-24 21:30:57,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:57,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417502929] [2020-09-24 21:30:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-24 21:30:57,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:30:57,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-24 21:30:57,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-09-24 21:30:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 21:30:57,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:57,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:30:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:57,580 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 21:30:57,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417502929] [2020-09-24 21:30:57,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:57,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:30:57,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827228600] [2020-09-24 21:30:57,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:30:57,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:57,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:30:57,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:30:57,584 INFO L87 Difference]: Start difference. First operand 338 states and 401 transitions. Second operand 3 states. [2020-09-24 21:30:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:57,616 INFO L93 Difference]: Finished difference Result 593 states and 722 transitions. [2020-09-24 21:30:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:30:57,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-24 21:30:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:57,619 INFO L225 Difference]: With dead ends: 593 [2020-09-24 21:30:57,619 INFO L226 Difference]: Without dead ends: 383 [2020-09-24 21:30:57,620 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 21:30:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-24 21:30:57,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2020-09-24 21:30:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-09-24 21:30:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 453 transitions. [2020-09-24 21:30:57,631 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 453 transitions. Word has length 180 [2020-09-24 21:30:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:57,632 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 453 transitions. [2020-09-24 21:30:57,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:30:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 453 transitions. [2020-09-24 21:30:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 21:30:57,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:57,635 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] [2020-09-24 21:30:57,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:30:57,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:57,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1957933229, now seen corresponding path program 1 times [2020-09-24 21:30:57,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:57,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525111996] [2020-09-24 21:30:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-24 21:30:57,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 21:30:57,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-24 21:30:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:30:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:57,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:30:57,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:57,954 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 21:30:57,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525111996] [2020-09-24 21:30:57,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:57,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:30:57,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917679044] [2020-09-24 21:30:57,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:30:57,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:57,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:30:57,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:30:57,958 INFO L87 Difference]: Start difference. First operand 383 states and 453 transitions. Second operand 3 states. [2020-09-24 21:30:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:58,150 INFO L93 Difference]: Finished difference Result 624 states and 767 transitions. [2020-09-24 21:30:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:30:58,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-09-24 21:30:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:58,154 INFO L225 Difference]: With dead ends: 624 [2020-09-24 21:30:58,154 INFO L226 Difference]: Without dead ends: 414 [2020-09-24 21:30:58,155 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 21:30:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-09-24 21:30:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 403. [2020-09-24 21:30:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-24 21:30:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 478 transitions. [2020-09-24 21:30:58,167 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 478 transitions. Word has length 181 [2020-09-24 21:30:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:58,168 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 478 transitions. [2020-09-24 21:30:58,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:30:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 478 transitions. [2020-09-24 21:30:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 21:30:58,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:58,172 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] [2020-09-24 21:30:58,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:30:58,173 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:58,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:58,174 INFO L82 PathProgramCache]: Analyzing trace with hash 129935299, now seen corresponding path program 1 times [2020-09-24 21:30:58,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:58,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658795632] [2020-09-24 21:30:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:58,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:58,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:58,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:58,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-24 21:30:58,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:30:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-09-24 21:30:58,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 21:30:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 21:30:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:59,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:59,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:30:59,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:59,082 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 21:30:59,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658795632] [2020-09-24 21:30:59,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:59,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:30:59,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576426785] [2020-09-24 21:30:59,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:30:59,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:59,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:30:59,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:30:59,088 INFO L87 Difference]: Start difference. First operand 403 states and 478 transitions. Second operand 3 states. [2020-09-24 21:30:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:59,176 INFO L93 Difference]: Finished difference Result 847 states and 1036 transitions. [2020-09-24 21:30:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:30:59,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-09-24 21:30:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:59,181 INFO L225 Difference]: With dead ends: 847 [2020-09-24 21:30:59,182 INFO L226 Difference]: Without dead ends: 617 [2020-09-24 21:30:59,183 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 21:30:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-09-24 21:30:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 615. [2020-09-24 21:30:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-24 21:30:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 739 transitions. [2020-09-24 21:30:59,223 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 739 transitions. Word has length 188 [2020-09-24 21:30:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:59,224 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 739 transitions. [2020-09-24 21:30:59,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:30:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 739 transitions. [2020-09-24 21:30:59,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 21:30:59,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:59,231 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] [2020-09-24 21:30:59,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:30:59,232 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1932501654, now seen corresponding path program 1 times [2020-09-24 21:30:59,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:59,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432448952] [2020-09-24 21:30:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:59,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 21:30:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:30:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-09-24 21:30:59,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-24 21:30:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:30:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:59,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:59,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:59,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:30:59,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:59,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:00,001 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 21:31:00,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432448952] [2020-09-24 21:31:00,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:31:00,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:31:00,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404694287] [2020-09-24 21:31:00,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:31:00,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:00,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:31:00,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:31:00,005 INFO L87 Difference]: Start difference. First operand 615 states and 739 transitions. Second operand 3 states. [2020-09-24 21:31:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:00,027 INFO L93 Difference]: Finished difference Result 1066 states and 1304 transitions. [2020-09-24 21:31:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:31:00,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-09-24 21:31:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:00,031 INFO L225 Difference]: With dead ends: 1066 [2020-09-24 21:31:00,032 INFO L226 Difference]: Without dead ends: 624 [2020-09-24 21:31:00,033 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 21:31:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-09-24 21:31:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 619. [2020-09-24 21:31:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-09-24 21:31:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 741 transitions. [2020-09-24 21:31:00,055 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 741 transitions. Word has length 189 [2020-09-24 21:31:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:00,055 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 741 transitions. [2020-09-24 21:31:00,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:31:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 741 transitions. [2020-09-24 21:31:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 21:31:00,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:00,058 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] [2020-09-24 21:31:00,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:31:00,059 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:00,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:00,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1261577978, now seen corresponding path program 1 times [2020-09-24 21:31:00,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:00,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681593126] [2020-09-24 21:31:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:00,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:01,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 21:31:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:31:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-09-24 21:31:01,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 21:31:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:31:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:01,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:01,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:01,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:01,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:01,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:01,424 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 21:31:01,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681593126] [2020-09-24 21:31:01,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:31:01,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:31:01,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207815488] [2020-09-24 21:31:01,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:31:01,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:01,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:31:01,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:31:01,426 INFO L87 Difference]: Start difference. First operand 619 states and 741 transitions. Second operand 4 states. [2020-09-24 21:31:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:01,494 INFO L93 Difference]: Finished difference Result 2078 states and 2548 transitions. [2020-09-24 21:31:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:31:01,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-09-24 21:31:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:01,502 INFO L225 Difference]: With dead ends: 2078 [2020-09-24 21:31:01,502 INFO L226 Difference]: Without dead ends: 1592 [2020-09-24 21:31:01,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:31:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2020-09-24 21:31:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1104. [2020-09-24 21:31:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2020-09-24 21:31:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1336 transitions. [2020-09-24 21:31:01,541 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1336 transitions. Word has length 191 [2020-09-24 21:31:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:01,541 INFO L479 AbstractCegarLoop]: Abstraction has 1104 states and 1336 transitions. [2020-09-24 21:31:01,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:31:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1336 transitions. [2020-09-24 21:31:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 21:31:01,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:01,544 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] [2020-09-24 21:31:01,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:31:01,545 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash -6045779, now seen corresponding path program 1 times [2020-09-24 21:31:01,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:01,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212275971] [2020-09-24 21:31:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:01,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 21:31:02,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:31:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-09-24 21:31:02,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:31:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-24 21:31:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:31:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:02,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:02,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 21:31:02,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212275971] [2020-09-24 21:31:02,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:31:02,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:31:02,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455990764] [2020-09-24 21:31:02,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:31:02,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:02,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:31:02,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:31:02,530 INFO L87 Difference]: Start difference. First operand 1104 states and 1336 transitions. Second operand 3 states. [2020-09-24 21:31:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:02,573 INFO L93 Difference]: Finished difference Result 1606 states and 1951 transitions. [2020-09-24 21:31:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:31:02,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-09-24 21:31:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:02,581 INFO L225 Difference]: With dead ends: 1606 [2020-09-24 21:31:02,581 INFO L226 Difference]: Without dead ends: 1120 [2020-09-24 21:31:02,583 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 21:31:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2020-09-24 21:31:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1118. [2020-09-24 21:31:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-09-24 21:31:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1347 transitions. [2020-09-24 21:31:02,630 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1347 transitions. Word has length 191 [2020-09-24 21:31:02,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:02,631 INFO L479 AbstractCegarLoop]: Abstraction has 1118 states and 1347 transitions. [2020-09-24 21:31:02,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:31:02,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1347 transitions. [2020-09-24 21:31:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 21:31:02,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:02,634 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] [2020-09-24 21:31:02,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:31:02,634 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:02,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:02,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2059637971, now seen corresponding path program 1 times [2020-09-24 21:31:02,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:02,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484175273] [2020-09-24 21:31:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:02,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:05,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:05,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 21:31:05,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:31:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2380 [2020-09-24 21:31:05,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-09-24 21:31:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 21:31:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:05,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:05,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:05,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 21:31:05,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484175273] [2020-09-24 21:31:05,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:31:05,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:31:05,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033916360] [2020-09-24 21:31:05,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:31:05,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:05,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:31:05,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:31:05,119 INFO L87 Difference]: Start difference. First operand 1118 states and 1347 transitions. Second operand 5 states. [2020-09-24 21:31:05,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:05,358 INFO L93 Difference]: Finished difference Result 1620 states and 1959 transitions. [2020-09-24 21:31:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:31:05,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-09-24 21:31:05,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:05,366 INFO L225 Difference]: With dead ends: 1620 [2020-09-24 21:31:05,366 INFO L226 Difference]: Without dead ends: 1174 [2020-09-24 21:31:05,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:31:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-09-24 21:31:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1118. [2020-09-24 21:31:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-09-24 21:31:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1346 transitions. [2020-09-24 21:31:05,410 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1346 transitions. Word has length 192 [2020-09-24 21:31:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:05,411 INFO L479 AbstractCegarLoop]: Abstraction has 1118 states and 1346 transitions. [2020-09-24 21:31:05,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:31:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1346 transitions. [2020-09-24 21:31:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 21:31:05,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:05,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:31:05,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:31:05,415 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1020047875, now seen corresponding path program 1 times [2020-09-24 21:31:05,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:05,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201155753] [2020-09-24 21:31:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:05,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:05,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:05,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 21:31:05,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:31:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-24 21:31:05,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-24 21:31:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:31:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:05,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:05,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:05,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:31:05,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201155753] [2020-09-24 21:31:05,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:31:05,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:31:05,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059960446] [2020-09-24 21:31:05,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:31:05,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:05,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:31:05,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:31:05,961 INFO L87 Difference]: Start difference. First operand 1118 states and 1346 transitions. Second operand 4 states. [2020-09-24 21:31:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:06,281 INFO L93 Difference]: Finished difference Result 2047 states and 2507 transitions. [2020-09-24 21:31:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:31:06,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2020-09-24 21:31:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:06,289 INFO L225 Difference]: With dead ends: 2047 [2020-09-24 21:31:06,289 INFO L226 Difference]: Without dead ends: 1615 [2020-09-24 21:31:06,290 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 21:31:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2020-09-24 21:31:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1121. [2020-09-24 21:31:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-09-24 21:31:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1349 transitions. [2020-09-24 21:31:06,341 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1349 transitions. Word has length 195 [2020-09-24 21:31:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:06,341 INFO L479 AbstractCegarLoop]: Abstraction has 1121 states and 1349 transitions. [2020-09-24 21:31:06,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:31:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1349 transitions. [2020-09-24 21:31:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 21:31:06,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:06,344 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] [2020-09-24 21:31:06,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:31:06,345 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash 192610461, now seen corresponding path program 1 times [2020-09-24 21:31:06,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:06,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845058193] [2020-09-24 21:31:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:31:06,369 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:31:06,369 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:31:06,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 21:31:06,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:31:06 BoogieIcfgContainer [2020-09-24 21:31:06,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:31:06,423 INFO L168 Benchmark]: Toolchain (without parser) took 13765.96 ms. Allocated memory was 140.5 MB in the beginning and 418.4 MB in the end (delta: 277.9 MB). Free memory was 103.1 MB in the beginning and 147.3 MB in the end (delta: -44.2 MB). Peak memory consumption was 233.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:31:06,426 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:31:06,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.85 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 178.5 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:31:06,430 INFO L168 Benchmark]: Boogie Preprocessor took 64.18 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:31:06,431 INFO L168 Benchmark]: RCFGBuilder took 899.02 ms. Allocated memory is still 202.9 MB. Free memory was 176.5 MB in the beginning and 115.8 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:31:06,432 INFO L168 Benchmark]: TraceAbstraction took 12263.53 ms. Allocated memory was 202.9 MB in the beginning and 418.4 MB in the end (delta: 215.5 MB). Free memory was 115.2 MB in the beginning and 147.3 MB in the end (delta: -32.1 MB). Peak memory consumption was 183.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:31:06,442 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 529.85 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 178.5 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.18 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 899.02 ms. Allocated memory is still 202.9 MB. Free memory was 176.5 MB in the beginning and 115.8 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12263.53 ms. Allocated memory was 202.9 MB in the beginning and 418.4 MB in the end (delta: 215.5 MB). Free memory was 115.2 MB in the beginning and 147.3 MB in the end (delta: -32.1 MB). Peak memory consumption was 183.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 614]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 301. Possible FailurePath: [L623] int __retres1 ; [L627] CALL ssl3_connect() [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND TRUE \read(s__hit) [L94] ag_Y = 208 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND FALSE !((unsigned long )s__bbio != (unsigned long )s__wbio) [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND TRUE \read(s__hit) [L301] s__state = s__state | ag_Y [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 350 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.1s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5239 SDtfs, 1909 SDslu, 5262 SDs, 0 SdLazy, 973 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1121occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1299 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 2179 NumberOfCodeBlocks, 2179 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1965 ConstructedInterpolants, 0 QuantifiedInterpolants, 493760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 152/152 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...