/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-2a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:12:57,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:12:57,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:12:57,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:12:57,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:12:57,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:12:57,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:12:57,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:12:57,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:12:57,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:12:57,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:12:57,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:12:57,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:12:57,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:12:57,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:12:57,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:12:57,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:12:57,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:12:57,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:12:57,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:12:57,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:12:57,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:12:57,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:12:57,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:12:57,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:12:57,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:12:57,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:12:57,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:12:57,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:12:57,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:12:57,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:12:57,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:12:57,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:12:57,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:12:57,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:12:57,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:12:57,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:12:57,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:12:57,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:12:57,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:12:57,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:12:57,412 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 [2020-10-14 00:12:57,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:12:57,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:12:57,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:12:57,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:12:57,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:12:57,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:12:57,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:12:57,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:12:57,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:12:57,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:12:57,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:12:57,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:12:57,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:12:57,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:12:57,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:12:57,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:12:57,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:12:57,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:12:57,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:12:57,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:12:57,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:12:57,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:12:57,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:12:57,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:12:57,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:12:57,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:12:57,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:12:57,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:12:57,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:12:57,448 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:12:57,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:12:57,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:12:57,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:12:57,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:12:57,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:12:57,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-14 00:12:57,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/950f59518/1cc28c0676484e35b9b9d5bce8cd4908/FLAGd763ee418 [2020-10-14 00:12:58,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:12:58,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-14 00:12:58,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/950f59518/1cc28c0676484e35b9b9d5bce8cd4908/FLAGd763ee418 [2020-10-14 00:12:58,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/950f59518/1cc28c0676484e35b9b9d5bce8cd4908 [2020-10-14 00:12:58,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:12:58,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:12:58,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:12:58,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:12:58,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:12:58,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:12:58" (1/1) ... [2020-10-14 00:12:58,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d48379c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:58, skipping insertion in model container [2020-10-14 00:12:58,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:12:58" (1/1) ... [2020-10-14 00:12:58,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:12:58,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:12:59,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:12:59,041 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:12:59,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:12:59,216 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:12:59,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59 WrapperNode [2020-10-14 00:12:59,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:12:59,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:12:59,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:12:59,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:12:59,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (1/1) ... [2020-10-14 00:12:59,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (1/1) ... [2020-10-14 00:12:59,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (1/1) ... [2020-10-14 00:12:59,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (1/1) ... [2020-10-14 00:12:59,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (1/1) ... [2020-10-14 00:12:59,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (1/1) ... [2020-10-14 00:12:59,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (1/1) ... [2020-10-14 00:12:59,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:12:59,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:12:59,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:12:59,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:12:59,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (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 [2020-10-14 00:12:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:12:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:12:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-14 00:12:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:12:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:12:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:12:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:12:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-14 00:12:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:12:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:12:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:12:59,514 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 00:12:59,971 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-14 00:12:59,971 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-14 00:12:59,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:12:59,991 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:12:59,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:12:59 BoogieIcfgContainer [2020-10-14 00:12:59,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:12:59,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:12:59,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:13:00,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:13:00,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:12:58" (1/3) ... [2020-10-14 00:13:00,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8370f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:00, skipping insertion in model container [2020-10-14 00:13:00,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:59" (2/3) ... [2020-10-14 00:13:00,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8370f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:00, skipping insertion in model container [2020-10-14 00:13:00,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:12:59" (3/3) ... [2020-10-14 00:13:00,007 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-10-14 00:13:00,019 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:13:00,027 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:13:00,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:13:00,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:13:00,071 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:13:00,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:13:00,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:13:00,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:13:00,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:13:00,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:13:00,072 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:13:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-10-14 00:13:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 00:13:00,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:00,108 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] [2020-10-14 00:13:00,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash 631865998, now seen corresponding path program 1 times [2020-10-14 00:13:00,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:00,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215895551] [2020-10-14 00:13:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 00:13:00,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:13:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 00:13:00,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 00:13:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:13:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:13:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:13:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:13:00,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215895551] [2020-10-14 00:13:00,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:00,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:00,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907759443] [2020-10-14 00:13:00,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:00,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:00,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:00,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:00,935 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 3 states. [2020-10-14 00:13:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:01,078 INFO L93 Difference]: Finished difference Result 368 states and 625 transitions. [2020-10-14 00:13:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:01,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 00:13:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:01,096 INFO L225 Difference]: With dead ends: 368 [2020-10-14 00:13:01,096 INFO L226 Difference]: Without dead ends: 214 [2020-10-14 00:13:01,101 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 [2020-10-14 00:13:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-14 00:13:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-14 00:13:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 00:13:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 320 transitions. [2020-10-14 00:13:01,174 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 320 transitions. Word has length 29 [2020-10-14 00:13:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:01,174 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 320 transitions. [2020-10-14 00:13:01,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 320 transitions. [2020-10-14 00:13:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 00:13:01,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:01,178 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:13:01,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:13:01,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:01,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1072013015, now seen corresponding path program 1 times [2020-10-14 00:13:01,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:01,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742410044] [2020-10-14 00:13:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:01,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 00:13:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:13:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-14 00:13:01,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:01,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:13:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:13:01,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:13:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:01,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:01,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:01,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:01,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:01,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:13:01,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742410044] [2020-10-14 00:13:01,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:01,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:01,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332881196] [2020-10-14 00:13:01,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:01,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:01,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:01,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:01,658 INFO L87 Difference]: Start difference. First operand 214 states and 320 transitions. Second operand 3 states. [2020-10-14 00:13:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:01,753 INFO L93 Difference]: Finished difference Result 416 states and 629 transitions. [2020-10-14 00:13:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:01,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-14 00:13:01,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:01,762 INFO L225 Difference]: With dead ends: 416 [2020-10-14 00:13:01,765 INFO L226 Difference]: Without dead ends: 314 [2020-10-14 00:13:01,767 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 [2020-10-14 00:13:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-14 00:13:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-10-14 00:13:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-14 00:13:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 470 transitions. [2020-10-14 00:13:01,802 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 470 transitions. Word has length 43 [2020-10-14 00:13:01,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:01,803 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 470 transitions. [2020-10-14 00:13:01,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:01,803 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 470 transitions. [2020-10-14 00:13:01,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 00:13:01,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:01,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:01,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:13:01,808 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:01,808 INFO L82 PathProgramCache]: Analyzing trace with hash 229515703, now seen corresponding path program 1 times [2020-10-14 00:13:01,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:01,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975126652] [2020-10-14 00:13:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:02,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:13:02,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 00:13:02,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:02,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 00:13:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 00:13:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:02,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:02,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:02,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:02,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:02,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:02,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 00:13:02,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975126652] [2020-10-14 00:13:02,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:02,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:02,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820755687] [2020-10-14 00:13:02,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:02,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:02,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:02,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:02,117 INFO L87 Difference]: Start difference. First operand 314 states and 470 transitions. Second operand 3 states. [2020-10-14 00:13:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:02,200 INFO L93 Difference]: Finished difference Result 616 states and 929 transitions. [2020-10-14 00:13:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:02,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-10-14 00:13:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:02,204 INFO L225 Difference]: With dead ends: 616 [2020-10-14 00:13:02,204 INFO L226 Difference]: Without dead ends: 414 [2020-10-14 00:13:02,206 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 [2020-10-14 00:13:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-14 00:13:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2020-10-14 00:13:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-14 00:13:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 621 transitions. [2020-10-14 00:13:02,227 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 621 transitions. Word has length 60 [2020-10-14 00:13:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:02,228 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 621 transitions. [2020-10-14 00:13:02,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 621 transitions. [2020-10-14 00:13:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 00:13:02,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:02,233 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 00:13:02,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:13:02,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:02,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:02,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1836051465, now seen corresponding path program 1 times [2020-10-14 00:13:02,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:02,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285098730] [2020-10-14 00:13:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:02,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:02,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 00:13:02,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-14 00:13:02,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:02,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 00:13:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:13:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:02,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:02,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:02,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:02,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 00:13:02,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285098730] [2020-10-14 00:13:02,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:02,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:02,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560652884] [2020-10-14 00:13:02,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:02,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:02,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:02,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:02,937 INFO L87 Difference]: Start difference. First operand 414 states and 621 transitions. Second operand 3 states. [2020-10-14 00:13:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:03,025 INFO L93 Difference]: Finished difference Result 816 states and 1231 transitions. [2020-10-14 00:13:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:03,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-10-14 00:13:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:03,031 INFO L225 Difference]: With dead ends: 816 [2020-10-14 00:13:03,031 INFO L226 Difference]: Without dead ends: 514 [2020-10-14 00:13:03,034 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 [2020-10-14 00:13:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-14 00:13:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-14 00:13:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-14 00:13:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 773 transitions. [2020-10-14 00:13:03,058 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 773 transitions. Word has length 78 [2020-10-14 00:13:03,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:03,060 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 773 transitions. [2020-10-14 00:13:03,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 773 transitions. [2020-10-14 00:13:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 00:13:03,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:03,069 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:03,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:13:03,069 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:03,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:03,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1425943087, now seen corresponding path program 1 times [2020-10-14 00:13:03,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:03,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261465786] [2020-10-14 00:13:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:03,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 00:13:03,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 00:13:03,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:03,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 00:13:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:13:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:03,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:03,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:03,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:03,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:03,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 00:13:03,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261465786] [2020-10-14 00:13:03,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:03,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:03,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541626201] [2020-10-14 00:13:03,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:03,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:03,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:03,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:03,455 INFO L87 Difference]: Start difference. First operand 514 states and 773 transitions. Second operand 3 states. [2020-10-14 00:13:03,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:03,522 INFO L93 Difference]: Finished difference Result 616 states and 928 transitions. [2020-10-14 00:13:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:03,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-10-14 00:13:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:03,527 INFO L225 Difference]: With dead ends: 616 [2020-10-14 00:13:03,528 INFO L226 Difference]: Without dead ends: 614 [2020-10-14 00:13:03,529 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 [2020-10-14 00:13:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-10-14 00:13:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2020-10-14 00:13:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-14 00:13:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 926 transitions. [2020-10-14 00:13:03,549 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 926 transitions. Word has length 98 [2020-10-14 00:13:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:03,550 INFO L479 AbstractCegarLoop]: Abstraction has 614 states and 926 transitions. [2020-10-14 00:13:03,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 926 transitions. [2020-10-14 00:13:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 00:13:03,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:03,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:03,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:13:03,557 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:03,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1558601080, now seen corresponding path program 1 times [2020-10-14 00:13:03,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:03,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060442858] [2020-10-14 00:13:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:03,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:04,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 00:13:04,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-14 00:13:04,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:04,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 00:13:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:13:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:04,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:04,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:04,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:13:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 00:13:04,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060442858] [2020-10-14 00:13:04,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:04,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:04,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368020615] [2020-10-14 00:13:04,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:04,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:04,342 INFO L87 Difference]: Start difference. First operand 614 states and 926 transitions. Second operand 3 states. [2020-10-14 00:13:04,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:04,599 INFO L93 Difference]: Finished difference Result 1540 states and 2399 transitions. [2020-10-14 00:13:04,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:04,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-10-14 00:13:04,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:04,606 INFO L225 Difference]: With dead ends: 1540 [2020-10-14 00:13:04,606 INFO L226 Difference]: Without dead ends: 938 [2020-10-14 00:13:04,608 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 [2020-10-14 00:13:04,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-10-14 00:13:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 860. [2020-10-14 00:13:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-10-14 00:13:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1232 transitions. [2020-10-14 00:13:04,638 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1232 transitions. Word has length 113 [2020-10-14 00:13:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:04,638 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 1232 transitions. [2020-10-14 00:13:04,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1232 transitions. [2020-10-14 00:13:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:13:04,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:04,644 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 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] [2020-10-14 00:13:04,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:13:04,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2124477240, now seen corresponding path program 1 times [2020-10-14 00:13:04,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:04,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902052732] [2020-10-14 00:13:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:05,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 00:13:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:13:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-14 00:13:05,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:05,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-14 00:13:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:13:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:05,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:05,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:05,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:05,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:05,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-14 00:13:05,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902052732] [2020-10-14 00:13:05,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:05,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:05,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311753548] [2020-10-14 00:13:05,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:05,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:05,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:05,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:05,410 INFO L87 Difference]: Start difference. First operand 860 states and 1232 transitions. Second operand 3 states. [2020-10-14 00:13:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:05,652 INFO L93 Difference]: Finished difference Result 2008 states and 2976 transitions. [2020-10-14 00:13:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:05,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-10-14 00:13:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:05,660 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 00:13:05,660 INFO L226 Difference]: Without dead ends: 1154 [2020-10-14 00:13:05,663 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 [2020-10-14 00:13:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2020-10-14 00:13:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1106. [2020-10-14 00:13:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-10-14 00:13:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1532 transitions. [2020-10-14 00:13:05,693 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1532 transitions. Word has length 130 [2020-10-14 00:13:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:05,693 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1532 transitions. [2020-10-14 00:13:05,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1532 transitions. [2020-10-14 00:13:05,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 00:13:05,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:05,698 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 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] [2020-10-14 00:13:05,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:13:05,698 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:05,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1957871164, now seen corresponding path program 1 times [2020-10-14 00:13:05,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:05,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943865890] [2020-10-14 00:13:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:05,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 00:13:05,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:13:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 00:13:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:05,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 00:13:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:13:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:05,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:05,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 00:13:05,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943865890] [2020-10-14 00:13:05,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:05,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:05,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784456027] [2020-10-14 00:13:05,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:05,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:05,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:05,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:05,985 INFO L87 Difference]: Start difference. First operand 1106 states and 1532 transitions. Second operand 3 states. [2020-10-14 00:13:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:06,202 INFO L93 Difference]: Finished difference Result 2518 states and 3604 transitions. [2020-10-14 00:13:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:06,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-10-14 00:13:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:06,210 INFO L225 Difference]: With dead ends: 2518 [2020-10-14 00:13:06,211 INFO L226 Difference]: Without dead ends: 1424 [2020-10-14 00:13:06,213 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 [2020-10-14 00:13:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-14 00:13:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1220. [2020-10-14 00:13:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2020-10-14 00:13:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1718 transitions. [2020-10-14 00:13:06,247 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1718 transitions. Word has length 142 [2020-10-14 00:13:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:06,247 INFO L479 AbstractCegarLoop]: Abstraction has 1220 states and 1718 transitions. [2020-10-14 00:13:06,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1718 transitions. [2020-10-14 00:13:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 00:13:06,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:06,252 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 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] [2020-10-14 00:13:06,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:13:06,252 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash -625188078, now seen corresponding path program 1 times [2020-10-14 00:13:06,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:06,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192185674] [2020-10-14 00:13:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 00:13:06,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 00:13:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 00:13:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:06,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:06,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:06,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:06,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:06,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:06,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:06,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 00:13:06,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192185674] [2020-10-14 00:13:06,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:06,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:06,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091093718] [2020-10-14 00:13:06,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:06,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:06,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:06,842 INFO L87 Difference]: Start difference. First operand 1220 states and 1718 transitions. Second operand 3 states. [2020-10-14 00:13:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:06,907 INFO L93 Difference]: Finished difference Result 3025 states and 4259 transitions. [2020-10-14 00:13:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:06,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-10-14 00:13:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:06,919 INFO L225 Difference]: With dead ends: 3025 [2020-10-14 00:13:06,919 INFO L226 Difference]: Without dead ends: 1817 [2020-10-14 00:13:06,922 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 [2020-10-14 00:13:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2020-10-14 00:13:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1817. [2020-10-14 00:13:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2020-10-14 00:13:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2551 transitions. [2020-10-14 00:13:06,982 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2551 transitions. Word has length 158 [2020-10-14 00:13:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:06,982 INFO L479 AbstractCegarLoop]: Abstraction has 1817 states and 2551 transitions. [2020-10-14 00:13:06,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2551 transitions. [2020-10-14 00:13:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 00:13:06,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:06,990 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:06,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:13:06,991 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1705875194, now seen corresponding path program 1 times [2020-10-14 00:13:06,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:06,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717993275] [2020-10-14 00:13:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:07,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:07,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:07,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:07,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 00:13:07,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:13:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 00:13:07,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:07,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-14 00:13:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:13:07,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:07,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:07,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:07,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:07,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:07,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:07,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:07,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-14 00:13:07,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717993275] [2020-10-14 00:13:07,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:07,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:07,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760639423] [2020-10-14 00:13:07,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:07,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:07,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:07,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:07,437 INFO L87 Difference]: Start difference. First operand 1817 states and 2551 transitions. Second operand 3 states. [2020-10-14 00:13:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:07,686 INFO L93 Difference]: Finished difference Result 4090 states and 5899 transitions. [2020-10-14 00:13:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:07,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-10-14 00:13:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:07,699 INFO L225 Difference]: With dead ends: 4090 [2020-10-14 00:13:07,699 INFO L226 Difference]: Without dead ends: 2285 [2020-10-14 00:13:07,703 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 [2020-10-14 00:13:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-10-14 00:13:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2006. [2020-10-14 00:13:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-10-14 00:13:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2866 transitions. [2020-10-14 00:13:07,765 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2866 transitions. Word has length 160 [2020-10-14 00:13:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:07,765 INFO L479 AbstractCegarLoop]: Abstraction has 2006 states and 2866 transitions. [2020-10-14 00:13:07,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2866 transitions. [2020-10-14 00:13:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 00:13:07,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:07,771 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:07,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:13:07,772 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:07,772 INFO L82 PathProgramCache]: Analyzing trace with hash 709767042, now seen corresponding path program 1 times [2020-10-14 00:13:07,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:07,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757055141] [2020-10-14 00:13:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:07,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:08,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 00:13:08,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:13:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 00:13:08,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:08,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:13:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 00:13:08,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:08,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:08,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:08,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:08,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 00:13:08,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757055141] [2020-10-14 00:13:08,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:08,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:08,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53806159] [2020-10-14 00:13:08,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:08,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:08,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:08,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:08,187 INFO L87 Difference]: Start difference. First operand 2006 states and 2866 transitions. Second operand 3 states. [2020-10-14 00:13:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:08,449 INFO L93 Difference]: Finished difference Result 4801 states and 6949 transitions. [2020-10-14 00:13:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:08,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-10-14 00:13:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:08,464 INFO L225 Difference]: With dead ends: 4801 [2020-10-14 00:13:08,464 INFO L226 Difference]: Without dead ends: 2591 [2020-10-14 00:13:08,469 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 [2020-10-14 00:13:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-10-14 00:13:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2501. [2020-10-14 00:13:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2020-10-14 00:13:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3586 transitions. [2020-10-14 00:13:08,541 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3586 transitions. Word has length 163 [2020-10-14 00:13:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:08,542 INFO L479 AbstractCegarLoop]: Abstraction has 2501 states and 3586 transitions. [2020-10-14 00:13:08,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3586 transitions. [2020-10-14 00:13:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 00:13:08,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:08,550 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:08,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:13:08,550 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash 775424292, now seen corresponding path program 1 times [2020-10-14 00:13:08,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:08,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201034809] [2020-10-14 00:13:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:08,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 00:13:08,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 00:13:08,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:08,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 00:13:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 00:13:08,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:08,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:08,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:13:08,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:08,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-14 00:13:08,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201034809] [2020-10-14 00:13:08,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:08,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:08,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485437529] [2020-10-14 00:13:08,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:08,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:08,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:08,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:08,998 INFO L87 Difference]: Start difference. First operand 2501 states and 3586 transitions. Second operand 3 states. [2020-10-14 00:13:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:09,118 INFO L93 Difference]: Finished difference Result 6921 states and 10024 transitions. [2020-10-14 00:13:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:09,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-10-14 00:13:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:09,142 INFO L225 Difference]: With dead ends: 6921 [2020-10-14 00:13:09,143 INFO L226 Difference]: Without dead ends: 4432 [2020-10-14 00:13:09,152 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 [2020-10-14 00:13:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2020-10-14 00:13:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 4430. [2020-10-14 00:13:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4430 states. [2020-10-14 00:13:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 6426 transitions. [2020-10-14 00:13:09,366 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 6426 transitions. Word has length 192 [2020-10-14 00:13:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:09,367 INFO L479 AbstractCegarLoop]: Abstraction has 4430 states and 6426 transitions. [2020-10-14 00:13:09,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 6426 transitions. [2020-10-14 00:13:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 00:13:09,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:09,379 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:09,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:13:09,379 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:09,380 INFO L82 PathProgramCache]: Analyzing trace with hash 228163440, now seen corresponding path program 1 times [2020-10-14 00:13:09,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:09,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626450734] [2020-10-14 00:13:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:09,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:09,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 00:13:09,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 00:13:09,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:09,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 00:13:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:13:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:09,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:09,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:09,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:09,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:09,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:09,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-14 00:13:09,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626450734] [2020-10-14 00:13:09,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:09,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:13:09,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323826307] [2020-10-14 00:13:09,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:13:09,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:09,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:13:09,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:13:09,604 INFO L87 Difference]: Start difference. First operand 4430 states and 6426 transitions. Second operand 3 states. [2020-10-14 00:13:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:10,035 INFO L93 Difference]: Finished difference Result 9786 states and 14369 transitions. [2020-10-14 00:13:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:13:10,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-10-14 00:13:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:10,070 INFO L225 Difference]: With dead ends: 9786 [2020-10-14 00:13:10,070 INFO L226 Difference]: Without dead ends: 5062 [2020-10-14 00:13:10,085 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 [2020-10-14 00:13:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5062 states. [2020-10-14 00:13:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5062 to 4844. [2020-10-14 00:13:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2020-10-14 00:13:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 7038 transitions. [2020-10-14 00:13:10,301 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 7038 transitions. Word has length 192 [2020-10-14 00:13:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:10,301 INFO L479 AbstractCegarLoop]: Abstraction has 4844 states and 7038 transitions. [2020-10-14 00:13:10,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:13:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 7038 transitions. [2020-10-14 00:13:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 00:13:10,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:10,320 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:10,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:13:10,321 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:10,321 INFO L82 PathProgramCache]: Analyzing trace with hash -349816743, now seen corresponding path program 1 times [2020-10-14 00:13:10,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:10,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880915339] [2020-10-14 00:13:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 00:13:10,370 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 00:13:10,371 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:13:10,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:13:10,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:13:10 BoogieIcfgContainer [2020-10-14 00:13:10,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:13:10,469 INFO L168 Benchmark]: Toolchain (without parser) took 11792.54 ms. Allocated memory was 147.3 MB in the beginning and 444.6 MB in the end (delta: 297.3 MB). Free memory was 102.7 MB in the beginning and 119.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 280.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:13:10,470 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-14 00:13:10,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.94 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 180.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-14 00:13:10,472 INFO L168 Benchmark]: Boogie Preprocessor took 65.13 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 177.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-14 00:13:10,480 INFO L168 Benchmark]: RCFGBuilder took 714.48 ms. Allocated memory is still 204.5 MB. Free memory was 177.3 MB in the beginning and 132.4 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-10-14 00:13:10,481 INFO L168 Benchmark]: TraceAbstraction took 10464.06 ms. Allocated memory was 204.5 MB in the beginning and 444.6 MB in the end (delta: 240.1 MB). Free memory was 131.7 MB in the beginning and 119.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 252.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:13:10,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 539.94 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 180.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.13 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 177.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 714.48 ms. Allocated memory is still 204.5 MB. Free memory was 177.3 MB in the beginning and 132.4 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10464.06 ms. Allocated memory was 204.5 MB in the beginning and 444.6 MB in the end (delta: 240.1 MB). Free memory was 131.7 MB in the beginning and 119.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 252.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 607]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 355. Possible FailurePath: [L616] int __retres1 ; [L620] 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 = __VERIFIER_nondet_int(); [L63] int __retres59 ; [L66] s__state = 12292 [L67] blastFlag = 0 [L68] tmp = __VERIFIER_nondet_int() [L69] cb = 0 [L70] ret = -1 [L71] skip = 0 [L72] tmp___0 = 0 [L73] COND TRUE s__info_callback != 0 [L74] cb = s__info_callback [L82] s__in_handshake = s__in_handshake + 1 [L83] COND FALSE !(tmp___1 - 12288) [L93] COND TRUE 1 [L95] state = s__state [L96] COND TRUE s__state == 12292 [L199] s__new_session = 1 [L200] s__state = 4096 [L201] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L206] s__server = 0 [L207] COND TRUE cb != 0 [L212] COND FALSE !(s__version - 65280 != 768) [L218] s__type = 4096 [L219] COND FALSE !(s__init_buf___0 == 0) [L237] COND FALSE !(! tmp___4) [L243] COND FALSE !(! tmp___5) [L249] s__state = 4368 [L250] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L251] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND TRUE blastFlag == 0 [L258] blastFlag = 1 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND TRUE blastFlag == 1 [L283] blastFlag = 2 [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND TRUE blastFlag == 2 [L306] blastFlag = 3 [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 3 [L323] blastFlag = 4 [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND FALSE !(blastFlag == 5) [L350] COND FALSE !(ret <= 0) [L355] s__state = ag_X ^ ag_Y [L356] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND FALSE !(blastFlag == 0) [L260] COND TRUE blastFlag == 4 [L261] blastFlag = 5 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND FALSE !(blastFlag == 1) [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND FALSE !(blastFlag == 2) [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND FALSE !(blastFlag == 3) [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND TRUE blastFlag == 5 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.3s, OverallIterations: 14, TraceHistogramMax: 11, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2426 SDtfs, 1345 SDslu, 1482 SDs, 0 SdLazy, 789 SolverSat, 266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4844occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 919 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1759 NumberOfCodeBlocks, 1759 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1545 ConstructedInterpolants, 0 QuantifiedInterpolants, 423223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 2812/2812 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...