/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/ssh/s3_srvr.blast.11.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:03:57,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:03:57,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:03:57,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:03:57,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:03:57,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:03:57,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:03:57,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:03:57,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:03:57,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:03:57,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:03:57,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:03:57,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:03:57,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:03:57,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:03:57,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:03:57,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:03:57,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:03:57,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:03:57,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:03:57,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:03:57,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:03:57,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:03:57,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:03:57,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:03:57,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:03:57,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:03:57,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:03:57,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:03:57,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:03:57,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:03:57,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:03:57,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:03:57,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:03:57,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:03:57,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:03:57,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:03:57,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:03:57,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:03:57,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:03:57,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:03:57,541 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 10:03:57,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:03:57,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:03:57,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:03:57,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:03:57,591 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:03:57,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:03:57,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:03:57,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:03:57,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:03:57,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:03:57,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:03:57,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:03:57,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:03:57,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:03:57,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:03:57,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:03:57,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:03:57,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:03:57,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:03:57,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:03:57,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:03:57,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:03:57,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:03:57,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:03:57,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:03:57,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:03:57,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:03:57,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:03:57,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:03:57,597 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 10:03:57,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:03:57,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:03:57,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:03:57,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:03:57,938 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:03:57,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-1.c [2020-10-14 10:03:57,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0613ed484/57a50da6f14945dd93aa7993f77f2188/FLAGe910c07f0 [2020-10-14 10:03:58,538 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:03:58,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-1.c [2020-10-14 10:03:58,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0613ed484/57a50da6f14945dd93aa7993f77f2188/FLAGe910c07f0 [2020-10-14 10:03:58,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0613ed484/57a50da6f14945dd93aa7993f77f2188 [2020-10-14 10:03:58,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:03:58,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:03:58,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:03:58,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:03:58,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:03:58,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:58,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4952973e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58, skipping insertion in model container [2020-10-14 10:03:58,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:58,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:03:58,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:03:59,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:03:59,515 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:03:59,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:03:59,710 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:03:59,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59 WrapperNode [2020-10-14 10:03:59,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:03:59,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:03:59,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:03:59,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:03:59,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (1/1) ... [2020-10-14 10:03:59,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (1/1) ... [2020-10-14 10:03:59,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (1/1) ... [2020-10-14 10:03:59,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (1/1) ... [2020-10-14 10:03:59,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (1/1) ... [2020-10-14 10:03:59,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (1/1) ... [2020-10-14 10:03:59,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (1/1) ... [2020-10-14 10:03:59,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:03:59,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:03:59,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:03:59,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:03:59,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (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 10:03:59,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:03:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:03:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:03:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:03:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:03:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:03:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:03:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:03:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:03:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:03:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:03:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:03:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:03:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:03:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:03:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:03:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:03:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:03:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:03:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:03:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:03:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:03:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:03:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:03:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:03:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:03:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:03:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:03:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:03:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:03:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:03:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:03:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:03:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:03:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:03:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:03:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:04:00,502 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:04:01,229 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:04:01,230 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:04:01,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:04:01,254 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:04:01,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:01 BoogieIcfgContainer [2020-10-14 10:04:01,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:04:01,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:04:01,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:04:01,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:04:01,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:58" (1/3) ... [2020-10-14 10:04:01,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311854e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:01, skipping insertion in model container [2020-10-14 10:04:01,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:59" (2/3) ... [2020-10-14 10:04:01,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311854e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:01, skipping insertion in model container [2020-10-14 10:04:01,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:01" (3/3) ... [2020-10-14 10:04:01,268 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2020-10-14 10:04:01,280 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:04:01,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:04:01,302 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:04:01,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:04:01,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:04:01,339 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:04:01,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:04:01,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:04:01,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:04:01,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:04:01,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:04:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-14 10:04:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:04:01,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:01,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:01,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:01,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-14 10:04:01,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:01,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712140519] [2020-10-14 10:04:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:04:03,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-14 10:04:03,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:03,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:04:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:03,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:03,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:04:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:03,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:03,272 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 10:04:03,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712140519] [2020-10-14 10:04:03,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:03,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:03,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717711548] [2020-10-14 10:04:03,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:03,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:03,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:03,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:03,300 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-14 10:04:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:03,992 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-14 10:04:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:03,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 10:04:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:04,009 INFO L225 Difference]: With dead ends: 436 [2020-10-14 10:04:04,009 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 10:04:04,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 10:04:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-14 10:04:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 10:04:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-14 10:04:04,088 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-14 10:04:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:04,089 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-14 10:04:04,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-14 10:04:04,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:04:04,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:04,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:04,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:04:04,094 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:04,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-14 10:04:04,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:04,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37637573] [2020-10-14 10:04:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:05,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:05,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 10:04:05,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-10-14 10:04:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:05,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:04:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:04:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:05,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:05,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:05,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:05,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37637573] [2020-10-14 10:04:05,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:05,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:05,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596003120] [2020-10-14 10:04:05,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:05,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:05,403 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-14 10:04:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:05,889 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-14 10:04:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:05,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 10:04:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:05,893 INFO L225 Difference]: With dead ends: 518 [2020-10-14 10:04:05,894 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 10:04:05,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 10:04:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-14 10:04:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:04:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-14 10:04:05,918 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-14 10:04:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:05,918 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-14 10:04:05,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-14 10:04:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:04:05,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:05,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:05,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:04:05,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:05,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-14 10:04:05,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:05,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948219094] [2020-10-14 10:04:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:06,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:06,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 10:04:06,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-14 10:04:06,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:06,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:04:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:04:06,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:06,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:04:06,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948219094] [2020-10-14 10:04:06,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:06,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:06,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174725986] [2020-10-14 10:04:06,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:06,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:06,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:06,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:06,637 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-14 10:04:07,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:07,109 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-14 10:04:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:07,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 10:04:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:07,113 INFO L225 Difference]: With dead ends: 768 [2020-10-14 10:04:07,113 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 10:04:07,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:07,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 10:04:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-14 10:04:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:04:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-14 10:04:07,138 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-14 10:04:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:07,139 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-14 10:04:07,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-14 10:04:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:04:07,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:07,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:07,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:04:07,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:07,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1488005106, now seen corresponding path program 1 times [2020-10-14 10:04:07,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:07,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349241623] [2020-10-14 10:04:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:04:10,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3120 [2020-10-14 10:04:10,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:10,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:10,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:10,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:10,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:10,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:10,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349241623] [2020-10-14 10:04:10,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:10,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:10,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737046653] [2020-10-14 10:04:10,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:10,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:10,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:10,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:10,554 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-14 10:04:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:11,035 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-14 10:04:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:11,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 10:04:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:11,043 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:04:11,043 INFO L226 Difference]: Without dead ends: 643 [2020-10-14 10:04:11,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-14 10:04:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-14 10:04:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-14 10:04:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-14 10:04:11,067 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-14 10:04:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:11,067 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-14 10:04:11,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-14 10:04:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 10:04:11,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:11,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:11,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:04:11,071 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:11,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2121222933, now seen corresponding path program 1 times [2020-10-14 10:04:11,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:11,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316215860] [2020-10-14 10:04:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:11,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:14,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 10:04:14,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3082 [2020-10-14 10:04:14,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:14,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:14,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:14,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:04:14,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:14,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:14,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:14,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316215860] [2020-10-14 10:04:14,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:14,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:14,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469448527] [2020-10-14 10:04:14,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:14,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:14,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:14,299 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-14 10:04:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:15,133 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-14 10:04:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:15,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-14 10:04:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:15,141 INFO L225 Difference]: With dead ends: 1270 [2020-10-14 10:04:15,141 INFO L226 Difference]: Without dead ends: 768 [2020-10-14 10:04:15,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-14 10:04:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-14 10:04:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-14 10:04:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-14 10:04:15,205 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 111 [2020-10-14 10:04:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:15,207 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-14 10:04:15,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-14 10:04:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 10:04:15,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:15,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:04:15,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:04:15,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:15,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:15,219 INFO L82 PathProgramCache]: Analyzing trace with hash 2042459755, now seen corresponding path program 1 times [2020-10-14 10:04:15,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:15,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699949355] [2020-10-14 10:04:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:15,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 10:04:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-14 10:04:15,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:15,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:04:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:04:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:15,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:15,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:15,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699949355] [2020-10-14 10:04:15,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:15,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:15,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892594584] [2020-10-14 10:04:15,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:15,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:15,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:15,984 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-14 10:04:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:16,579 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-14 10:04:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:16,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 10:04:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:16,586 INFO L225 Difference]: With dead ends: 1518 [2020-10-14 10:04:16,586 INFO L226 Difference]: Without dead ends: 891 [2020-10-14 10:04:16,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-14 10:04:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-14 10:04:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 10:04:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-14 10:04:16,616 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 128 [2020-10-14 10:04:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:16,616 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-14 10:04:16,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-14 10:04:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:04:16,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:16,620 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:16,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:04:16,621 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1858251708, now seen corresponding path program 1 times [2020-10-14 10:04:16,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:16,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652886486] [2020-10-14 10:04:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:17,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 10:04:17,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 10:04:17,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:17,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:04:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:04:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:17,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:17,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:17,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 10:04:17,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652886486] [2020-10-14 10:04:17,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:17,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:17,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849343502] [2020-10-14 10:04:17,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:17,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:17,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:17,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:17,346 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 5 states. [2020-10-14 10:04:18,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:18,459 INFO L93 Difference]: Finished difference Result 2505 states and 3774 transitions. [2020-10-14 10:04:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:18,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 10:04:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:18,468 INFO L225 Difference]: With dead ends: 2505 [2020-10-14 10:04:18,468 INFO L226 Difference]: Without dead ends: 1628 [2020-10-14 10:04:18,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-10-14 10:04:18,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1073. [2020-10-14 10:04:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-10-14 10:04:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1645 transitions. [2020-10-14 10:04:18,512 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1645 transitions. Word has length 133 [2020-10-14 10:04:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:18,513 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1645 transitions. [2020-10-14 10:04:18,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1645 transitions. [2020-10-14 10:04:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:04:18,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:18,520 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:18,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:04:18,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -100323078, now seen corresponding path program 1 times [2020-10-14 10:04:18,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:18,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286922712] [2020-10-14 10:04:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 10:04:18,584 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 10:04:18,584 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 10:04:18,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:04:18,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 10:04:18 BoogieIcfgContainer [2020-10-14 10:04:18,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 10:04:18,665 INFO L168 Benchmark]: Toolchain (without parser) took 19827.73 ms. Allocated memory was 147.8 MB in the beginning and 592.4 MB in the end (delta: 444.6 MB). Free memory was 100.2 MB in the beginning and 308.2 MB in the end (delta: -208.0 MB). Peak memory consumption was 236.6 MB. Max. memory is 7.1 GB. [2020-10-14 10:04:18,666 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 10:04:18,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.19 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 99.8 MB in the beginning and 166.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-10-14 10:04:18,668 INFO L168 Benchmark]: Boogie Preprocessor took 152.28 ms. Allocated memory is still 207.1 MB. Free memory was 166.9 MB in the beginning and 159.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. [2020-10-14 10:04:18,672 INFO L168 Benchmark]: RCFGBuilder took 1393.08 ms. Allocated memory was 207.1 MB in the beginning and 235.9 MB in the end (delta: 28.8 MB). Free memory was 159.1 MB in the beginning and 169.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2020-10-14 10:04:18,676 INFO L168 Benchmark]: TraceAbstraction took 17402.13 ms. Allocated memory was 235.9 MB in the beginning and 592.4 MB in the end (delta: 356.5 MB). Free memory was 169.5 MB in the beginning and 308.2 MB in the end (delta: -138.7 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. [2020-10-14 10:04:18,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 875.19 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 99.8 MB in the beginning and 166.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.28 ms. Allocated memory is still 207.1 MB. Free memory was 166.9 MB in the beginning and 159.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1393.08 ms. Allocated memory was 207.1 MB in the beginning and 235.9 MB in the end (delta: 28.8 MB). Free memory was 159.1 MB in the beginning and 169.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17402.13 ms. Allocated memory was 235.9 MB in the beginning and 592.4 MB in the end (delta: 356.5 MB). Free memory was 169.5 MB in the beginning and 308.2 MB in the end (delta: -138.7 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1726]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1444. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_server_data ; [L1065] SSL *s ; [L1066] int tmp ; [L1070] s = malloc(sizeof(SSL)) [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] CALL ssl3_accept(s) [L1080] BUF_MEM *buf ; [L1081] unsigned long l ; [L1082] unsigned long Time ; [L1083] unsigned long tmp ; [L1084] void (*cb)() ; [L1085] long num1 ; [L1086] int ret ; [L1087] int new_state ; [L1088] int state ; [L1089] int skip ; [L1090] int got_new_session ; [L1091] int tmp___1 = __VERIFIER_nondet_int() ; [L1092] int tmp___2 = __VERIFIER_nondet_int() ; [L1093] int tmp___3 = __VERIFIER_nondet_int() ; [L1094] int tmp___4 = __VERIFIER_nondet_int() ; [L1095] int tmp___5 = __VERIFIER_nondet_int() ; [L1096] int tmp___6 = __VERIFIER_nondet_int() ; [L1097] int tmp___7 ; [L1098] long tmp___8 = __VERIFIER_nondet_long() ; [L1099] int tmp___9 = __VERIFIER_nondet_int() ; [L1100] int tmp___10 = __VERIFIER_nondet_int() ; [L1101] int blastFlag ; [L1105] s->state = 8464 [L1106] blastFlag = 0 [L1107] s->hit=__VERIFIER_nondet_int () [L1108] s->state = 8464 [L1109] tmp = __VERIFIER_nondet_int() [L1110] Time = tmp [L1111] cb = (void (*)())((void *)0) [L1112] ret = -1 [L1113] skip = 0 [L1114] got_new_session = 0 [L1115] EXPR s->info_callback [L1115] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1116] EXPR s->info_callback [L1116] cb = s->info_callback [L1120] EXPR s->in_handshake [L1120] s->in_handshake += 1 [L1121] COND FALSE !(tmp___1 & 12288) [L1130] EXPR s->cert [L1130] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND TRUE s->state == 8464 [L1323] s->shutdown = 0 [L1324] ret = __VERIFIER_nondet_int() [L1325] COND TRUE blastFlag == 0 [L1326] blastFlag = 1 [L1330] COND FALSE !(ret <= 0) [L1335] got_new_session = 1 [L1336] s->state = 8496 [L1337] s->init_num = 0 [L1685] EXPR s->s3 [L1685] EXPR (s->s3)->tmp.reuse_message [L1685] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1714] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND TRUE s->state == 8496 [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 1 [L1343] blastFlag = 2 [L1347] COND FALSE !(ret <= 0) [L1352] s->hit [L1352] COND FALSE !(s->hit) [L1355] s->state = 8512 [L1357] s->init_num = 0 [L1685] EXPR s->s3 [L1685] EXPR (s->s3)->tmp.reuse_message [L1685] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1714] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND TRUE s->state == 8512 [L1361] EXPR s->s3 [L1361] EXPR (s->s3)->tmp.new_cipher [L1361] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1361] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1364] ret = __VERIFIER_nondet_int() [L1365] COND TRUE blastFlag == 2 [L1366] blastFlag = 6 [L1370] COND FALSE !(ret <= 0) [L1376] s->state = 8528 [L1377] s->init_num = 0 [L1685] EXPR s->s3 [L1685] EXPR (s->s3)->tmp.reuse_message [L1685] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1714] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND TRUE s->state == 8528 [L1381] EXPR s->s3 [L1381] EXPR (s->s3)->tmp.new_cipher [L1381] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1381] l = ((s->s3)->tmp.new_cipher)->algorithms [L1382] EXPR s->options [L1382] COND TRUE s->options & 2097152UL [L1383] EXPR s->s3 [L1383] (s->s3)->tmp.use_rsa_tmp = 1 [L1387] EXPR s->s3 [L1387] (s->s3)->tmp.use_rsa_tmp [L1387] COND TRUE (s->s3)->tmp.use_rsa_tmp [L1405] ret = __VERIFIER_nondet_int() [L1406] COND TRUE blastFlag == 6 [L1407] blastFlag = 7 [L1411] COND FALSE !(ret <= 0) [L1428] s->state = 8544 [L1429] s->init_num = 0 [L1685] EXPR s->s3 [L1685] EXPR (s->s3)->tmp.reuse_message [L1685] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1714] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND FALSE !(s->state == 8528) [L1187] EXPR s->state [L1187] COND FALSE !(s->state == 8529) [L1190] EXPR s->state [L1190] COND TRUE s->state == 8544 [L1433] EXPR s->verify_mode [L1433] COND TRUE s->verify_mode & 1 [L1434] EXPR s->session [L1434] EXPR (s->session)->peer [L1434] COND FALSE !((unsigned long )(s->session)->peer != (unsigned long )((void *)0)) [L1444] EXPR s->s3 [L1444] EXPR (s->s3)->tmp.new_cipher [L1444] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1444] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1454] EXPR s->s3 [L1454] (s->s3)->tmp.cert_request = 1 [L1455] ret = __VERIFIER_nondet_int() [L1456] COND TRUE blastFlag == 7 [L1726] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 185 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.2s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1699 SDtfs, 1108 SDslu, 1556 SDs, 0 SdLazy, 2358 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1073occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 559 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 788 NumberOfCodeBlocks, 788 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 648 ConstructedInterpolants, 0 QuantifiedInterpolants, 156046 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 477/477 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...