/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-simplified/s3_srvr_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:08:16,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:08:16,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:08:16,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:08:16,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:08:16,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:08:16,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:08:16,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:08:16,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:08:16,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:08:16,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:08:16,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:08:16,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:08:16,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:08:16,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:08:16,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:08:16,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:08:16,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:08:16,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:08:16,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:08:16,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:08:16,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:08:16,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:08:16,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:08:16,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:08:16,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:08:16,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:08:16,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:08:16,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:08:16,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:08:16,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:08:16,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:08:16,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:08:16,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:08:16,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:08:16,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:08:16,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:08:16,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:08:16,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:08:16,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:08:16,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:08:16,266 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 10:08:16,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:08:16,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:08:16,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:08:16,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:08:16,308 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:08:16,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:08:16,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:08:16,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:08:16,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:08:16,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:08:16,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:08:16,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:08:16,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:08:16,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:08:16,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:08:16,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:08:16,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:08:16,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:08:16,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:08:16,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:08:16,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:08:16,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:08:16,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:08:16,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:08:16,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:08:16,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:08:16,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:08:16,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:08:16,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:08:16,313 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 10:08:16,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:08:16,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:08:16,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:08:16,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:08:16,667 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:08:16,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-10-14 10:08:16,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08f4ddc9f/81dd5975f53e4001a8291a713e903311/FLAG9c55f80f7 [2020-10-14 10:08:17,271 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:08:17,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-10-14 10:08:17,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08f4ddc9f/81dd5975f53e4001a8291a713e903311/FLAG9c55f80f7 [2020-10-14 10:08:17,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08f4ddc9f/81dd5975f53e4001a8291a713e903311 [2020-10-14 10:08:17,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:08:17,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:08:17,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:08:17,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:08:17,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:08:17,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:17" (1/1) ... [2020-10-14 10:08:17,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589fe6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:17, skipping insertion in model container [2020-10-14 10:08:17,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:17" (1/1) ... [2020-10-14 10:08:17,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:08:17,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:08:17,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:08:17,939 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:08:18,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:08:18,148 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:08:18,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18 WrapperNode [2020-10-14 10:08:18,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:08:18,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:08:18,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:08:18,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:08:18,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (1/1) ... [2020-10-14 10:08:18,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (1/1) ... [2020-10-14 10:08:18,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (1/1) ... [2020-10-14 10:08:18,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (1/1) ... [2020-10-14 10:08:18,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (1/1) ... [2020-10-14 10:08:18,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (1/1) ... [2020-10-14 10:08:18,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (1/1) ... [2020-10-14 10:08:18,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:08:18,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:08:18,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:08:18,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:08:18,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (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 10:08:18,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:08:18,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:08:18,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:08:18,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:08:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:08:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:08:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:08:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:08:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:08:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:08:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:08:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:08:18,484 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:08:19,026 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-14 10:08:19,026 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-14 10:08:19,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:08:19,041 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:08:19,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:19 BoogieIcfgContainer [2020-10-14 10:08:19,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:08:19,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:08:19,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:08:19,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:08:19,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:08:17" (1/3) ... [2020-10-14 10:08:19,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd354e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:19, skipping insertion in model container [2020-10-14 10:08:19,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:18" (2/3) ... [2020-10-14 10:08:19,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd354e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:19, skipping insertion in model container [2020-10-14 10:08:19,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:19" (3/3) ... [2020-10-14 10:08:19,059 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2020-10-14 10:08:19,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:08:19,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:08:19,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:08:19,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:08:19,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:08:19,127 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:08:19,127 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:08:19,127 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:08:19,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:08:19,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:08:19,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:08:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-10-14 10:08:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 10:08:19,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:19,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:19,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash 281430660, now seen corresponding path program 1 times [2020-10-14 10:08:19,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:19,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031157990] [2020-10-14 10:08:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:08:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-14 10:08:19,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:19,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:08:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:08:19,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:08:20,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:20,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:20,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:20,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:20,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:20,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,065 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 10:08:20,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031157990] [2020-10-14 10:08:20,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:20,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:20,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690390299] [2020-10-14 10:08:20,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:20,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:20,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:20,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:20,097 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-10-14 10:08:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:20,253 INFO L93 Difference]: Finished difference Result 420 states and 708 transitions. [2020-10-14 10:08:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:20,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-10-14 10:08:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:20,276 INFO L225 Difference]: With dead ends: 420 [2020-10-14 10:08:20,276 INFO L226 Difference]: Without dead ends: 255 [2020-10-14 10:08:20,285 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 10:08:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-14 10:08:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2020-10-14 10:08:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-14 10:08:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2020-10-14 10:08:20,376 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 50 [2020-10-14 10:08:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:20,377 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2020-10-14 10:08:20,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2020-10-14 10:08:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 10:08:20,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:20,388 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:20,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:08:20,390 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:20,391 INFO L82 PathProgramCache]: Analyzing trace with hash 474837897, now seen corresponding path program 1 times [2020-10-14 10:08:20,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:20,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059988281] [2020-10-14 10:08:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 10:08:20,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 10:08:20,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:08:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:08:20,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:20,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:20,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:20,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,655 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 10:08:20,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059988281] [2020-10-14 10:08:20,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:20,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:20,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329198908] [2020-10-14 10:08:20,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:20,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:20,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:20,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:20,660 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand 3 states. [2020-10-14 10:08:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:20,734 INFO L93 Difference]: Finished difference Result 497 states and 758 transitions. [2020-10-14 10:08:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:20,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-10-14 10:08:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:20,739 INFO L225 Difference]: With dead ends: 497 [2020-10-14 10:08:20,739 INFO L226 Difference]: Without dead ends: 375 [2020-10-14 10:08:20,741 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 10:08:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-14 10:08:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2020-10-14 10:08:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-14 10:08:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 567 transitions. [2020-10-14 10:08:20,773 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 567 transitions. Word has length 66 [2020-10-14 10:08:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:20,774 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 567 transitions. [2020-10-14 10:08:20,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 567 transitions. [2020-10-14 10:08:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 10:08:20,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:20,779 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:20,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:08:20,780 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash 5421205, now seen corresponding path program 1 times [2020-10-14 10:08:20,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:20,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707269982] [2020-10-14 10:08:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 10:08:20,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 10:08:20,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 10:08:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:08:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:21,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:21,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:21,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:21,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:21,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:08:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:08:21,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707269982] [2020-10-14 10:08:21,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:21,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:21,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784957217] [2020-10-14 10:08:21,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:21,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:21,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:21,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:21,060 INFO L87 Difference]: Start difference. First operand 375 states and 567 transitions. Second operand 3 states. [2020-10-14 10:08:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:21,133 INFO L93 Difference]: Finished difference Result 737 states and 1122 transitions. [2020-10-14 10:08:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:21,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-10-14 10:08:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:21,138 INFO L225 Difference]: With dead ends: 737 [2020-10-14 10:08:21,138 INFO L226 Difference]: Without dead ends: 495 [2020-10-14 10:08:21,140 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 10:08:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-14 10:08:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2020-10-14 10:08:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-10-14 10:08:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 750 transitions. [2020-10-14 10:08:21,171 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 750 transitions. Word has length 87 [2020-10-14 10:08:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:21,172 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 750 transitions. [2020-10-14 10:08:21,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 750 transitions. [2020-10-14 10:08:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 10:08:21,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:21,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-10-14 10:08:21,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:08:21,178 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:21,178 INFO L82 PathProgramCache]: Analyzing trace with hash 298054395, now seen corresponding path program 1 times [2020-10-14 10:08:21,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:21,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85795184] [2020-10-14 10:08:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 10:08:21,206 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 10:08:21,206 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 10:08:21,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:08:21,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 10:08:21 BoogieIcfgContainer [2020-10-14 10:08:21,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 10:08:21,263 INFO L168 Benchmark]: Toolchain (without parser) took 3653.04 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 98.7 MB in the beginning and 113.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:21,265 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 144.7 MB. Free memory was 118.0 MB in the beginning and 117.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 10:08:21,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.58 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 175.8 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:21,267 INFO L168 Benchmark]: Boogie Preprocessor took 59.36 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 172.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:21,268 INFO L168 Benchmark]: RCFGBuilder took 840.30 ms. Allocated memory is still 201.3 MB. Free memory was 172.8 MB in the beginning and 122.7 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:21,270 INFO L168 Benchmark]: TraceAbstraction took 2206.90 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 121.7 MB in the beginning and 113.5 MB in the end (delta: 8.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:21,278 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 144.7 MB. Free memory was 118.0 MB in the beginning and 117.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 539.58 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 175.8 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.36 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 172.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 840.30 ms. Allocated memory is still 201.3 MB. Free memory was 172.8 MB in the beginning and 122.7 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2206.90 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 121.7 MB in the beginning and 113.5 MB in the end (delta: 8.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 611]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] int s ; [L617] int tmp ; [L621] s = 8464 [L622] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf = __VERIFIER_nondet_int() ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp = __VERIFIER_nondet_long() ; [L45] int cb ; [L46] long num1 ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 ; [L55] int tmp___4 ; [L56] int tmp___5 ; [L57] int tmp___6 ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 ; [L61] int tmp___10 ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] got_new_session = 1 [L277] s__state = 8496 [L278] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L282] ret = __VERIFIER_nondet_int() [L283] COND TRUE blastFlag == 1 [L284] blastFlag = 2 [L286] COND FALSE !(ret <= 0) [L289] COND TRUE \read(s__hit) [L290] s__state = 8656 [L294] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND TRUE s__state == 8656 [L488] s__session__cipher = s__s3__tmp__new_cipher [L489] tmp___9 = __VERIFIER_nondet_int() [L490] COND FALSE !(! tmp___9) [L494] ret = __VERIFIER_nondet_int() [L495] COND TRUE blastFlag == 2 [L496] blastFlag = 3 [L498] COND FALSE !(ret <= 0) [L501] s__state = 8672 [L502] s__init_num = 0 [L503] tmp___10 = __VERIFIER_nondet_int() [L504] COND FALSE !(! tmp___10) [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND FALSE !(s__state == 8656) [L193] COND FALSE !(s__state == 8657) [L196] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND FALSE !(blastFlag == 4) [L515] COND TRUE blastFlag == 3 [L611] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 633 SDtfs, 485 SDslu, 585 SDs, 0 SdLazy, 57 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 30864 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 49/49 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...