/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:33:46,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:33:46,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:33:46,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:33:46,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:33:46,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:33:46,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:33:46,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:33:46,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:33:46,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:33:46,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:33:46,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:33:46,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:33:46,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:33:46,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:33:46,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:33:46,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:33:46,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:33:46,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:33:46,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:33:46,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:33:46,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:33:46,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:33:46,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:33:46,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:33:46,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:33:46,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:33:46,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:33:46,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:33:46,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:33:46,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:33:46,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:33:46,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:33:46,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:33:46,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:33:46,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:33:46,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:33:46,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:33:46,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:33:46,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:33:46,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:33:46,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:33:46,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:33:46,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:33:46,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:33:46,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:33:46,337 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:33:46,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:33:46,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:33:46,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:33:46,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:33:46,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:33:46,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:33:46,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:33:46,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:33:46,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:33:46,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:33:46,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:33:46,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:33:46,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:33:46,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:33:46,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:33:46,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:33:46,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:46,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:33:46,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:33:46,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:33:46,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:33:46,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:33:46,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:33:46,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:33:46,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:33:46,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:33:46,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:33:46,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:33:46,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:33:46,876 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:33:46,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-25 14:33:46,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c88cd374/9a397693ce7a42bb86bfa1956af435a0/FLAG4834ab13e [2020-09-25 14:33:47,632 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:33:47,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-25 14:33:47,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c88cd374/9a397693ce7a42bb86bfa1956af435a0/FLAG4834ab13e [2020-09-25 14:33:47,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c88cd374/9a397693ce7a42bb86bfa1956af435a0 [2020-09-25 14:33:47,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:33:47,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:33:47,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:47,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:33:47,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:33:47,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:47" (1/1) ... [2020-09-25 14:33:47,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412bbfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:47, skipping insertion in model container [2020-09-25 14:33:47,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:47" (1/1) ... [2020-09-25 14:33:47,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:33:48,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:33:48,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:48,321 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:33:48,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:48,500 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:33:48,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48 WrapperNode [2020-09-25 14:33:48,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:48,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:33:48,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:33:48,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:33:48,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... [2020-09-25 14:33:48,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... [2020-09-25 14:33:48,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... [2020-09-25 14:33:48,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... [2020-09-25 14:33:48,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... [2020-09-25 14:33:48,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... [2020-09-25 14:33:48,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... [2020-09-25 14:33:48,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:33:48,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:33:48,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:33:48,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:33:48,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:48,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:33:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:33:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 14:33:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:33:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:33:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 14:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 14:33:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:33:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:33:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:33:48,894 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:49,656 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 14:33:49,657 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 14:33:49,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:33:49,694 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:33:49,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:49 BoogieIcfgContainer [2020-09-25 14:33:49,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:33:49,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:33:49,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:33:49,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:33:49,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:33:47" (1/3) ... [2020-09-25 14:33:49,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404500f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:49, skipping insertion in model container [2020-09-25 14:33:49,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:48" (2/3) ... [2020-09-25 14:33:49,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404500f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:49, skipping insertion in model container [2020-09-25 14:33:49,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:49" (3/3) ... [2020-09-25 14:33:49,723 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-09-25 14:33:49,736 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:33:49,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:33:49,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:33:49,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:33:49,814 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:33:49,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:33:49,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:33:49,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:33:49,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:33:49,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:33:49,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:33:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-09-25 14:33:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:33:49,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:49,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:49,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:49,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:49,880 INFO L82 PathProgramCache]: Analyzing trace with hash -51904500, now seen corresponding path program 1 times [2020-09-25 14:33:49,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:49,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284648536] [2020-09-25 14:33:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 14:33:51,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-09-25 14:33:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:33:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 14:33:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:33:51,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:51,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:51,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:51,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284648536] [2020-09-25 14:33:51,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:51,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:51,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057806611] [2020-09-25 14:33:51,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:51,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:51,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:51,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:51,714 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 6 states. [2020-09-25 14:33:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:52,097 INFO L93 Difference]: Finished difference Result 715 states and 928 transitions. [2020-09-25 14:33:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:33:52,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-25 14:33:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:52,125 INFO L225 Difference]: With dead ends: 715 [2020-09-25 14:33:52,125 INFO L226 Difference]: Without dead ends: 407 [2020-09-25 14:33:52,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-09-25 14:33:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 396. [2020-09-25 14:33:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-09-25 14:33:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 469 transitions. [2020-09-25 14:33:52,276 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 469 transitions. Word has length 181 [2020-09-25 14:33:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:52,280 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 469 transitions. [2020-09-25 14:33:52,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 469 transitions. [2020-09-25 14:33:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 14:33:52,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:52,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:52,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:33:52,288 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:52,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1773900517, now seen corresponding path program 1 times [2020-09-25 14:33:52,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:52,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510128916] [2020-09-25 14:33:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:53,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 14:33:53,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-09-25 14:33:53,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:53,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:53,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:53,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 14:33:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 14:33:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:33:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:53,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:53,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:53,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:53,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:53,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:53,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510128916] [2020-09-25 14:33:53,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:53,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:53,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263559176] [2020-09-25 14:33:53,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:53,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:53,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:53,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:53,313 INFO L87 Difference]: Start difference. First operand 396 states and 469 transitions. Second operand 3 states. [2020-09-25 14:33:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:53,583 INFO L93 Difference]: Finished difference Result 736 states and 922 transitions. [2020-09-25 14:33:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:53,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-09-25 14:33:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:53,589 INFO L225 Difference]: With dead ends: 736 [2020-09-25 14:33:53,589 INFO L226 Difference]: Without dead ends: 472 [2020-09-25 14:33:53,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-09-25 14:33:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 446. [2020-09-25 14:33:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-09-25 14:33:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 535 transitions. [2020-09-25 14:33:53,614 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 535 transitions. Word has length 203 [2020-09-25 14:33:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:53,615 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 535 transitions. [2020-09-25 14:33:53,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 535 transitions. [2020-09-25 14:33:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 14:33:53,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:53,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:53,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:33:53,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash 673445802, now seen corresponding path program 1 times [2020-09-25 14:33:53,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:53,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685618415] [2020-09-25 14:33:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:54,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 14:33:54,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:33:54,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-09-25 14:33:54,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:54,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 14:33:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:33:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:54,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:54,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:54,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:54,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:54,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:33:55,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685618415] [2020-09-25 14:33:55,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:55,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:55,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474080291] [2020-09-25 14:33:55,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:55,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:55,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:55,031 INFO L87 Difference]: Start difference. First operand 446 states and 535 transitions. Second operand 3 states. [2020-09-25 14:33:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:55,091 INFO L93 Difference]: Finished difference Result 1044 states and 1304 transitions. [2020-09-25 14:33:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:55,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-09-25 14:33:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:55,098 INFO L225 Difference]: With dead ends: 1044 [2020-09-25 14:33:55,098 INFO L226 Difference]: Without dead ends: 742 [2020-09-25 14:33:55,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-09-25 14:33:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2020-09-25 14:33:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-09-25 14:33:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 913 transitions. [2020-09-25 14:33:55,127 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 913 transitions. Word has length 210 [2020-09-25 14:33:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:55,128 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 913 transitions. [2020-09-25 14:33:55,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 913 transitions. [2020-09-25 14:33:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 14:33:55,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:55,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:55,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:55,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:55,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:55,134 INFO L82 PathProgramCache]: Analyzing trace with hash -764991549, now seen corresponding path program 1 times [2020-09-25 14:33:55,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:55,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733862317] [2020-09-25 14:33:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 14:33:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1153 [2020-09-25 14:33:56,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 14:33:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:33:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:56,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:56,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:56,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733862317] [2020-09-25 14:33:56,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:56,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:56,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567368663] [2020-09-25 14:33:56,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:56,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:56,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:56,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:56,411 INFO L87 Difference]: Start difference. First operand 742 states and 913 transitions. Second operand 3 states. [2020-09-25 14:33:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:56,472 INFO L93 Difference]: Finished difference Result 1340 states and 1682 transitions. [2020-09-25 14:33:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:56,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-25 14:33:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:56,479 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 14:33:56,479 INFO L226 Difference]: Without dead ends: 1038 [2020-09-25 14:33:56,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-09-25 14:33:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2020-09-25 14:33:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-25 14:33:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1292 transitions. [2020-09-25 14:33:56,513 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1292 transitions. Word has length 211 [2020-09-25 14:33:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:56,514 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1292 transitions. [2020-09-25 14:33:56,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1292 transitions. [2020-09-25 14:33:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 14:33:56,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:56,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:56,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:33:56,521 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash 955931285, now seen corresponding path program 1 times [2020-09-25 14:33:56,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:56,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057251490] [2020-09-25 14:33:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 14:33:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 14:33:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 14:33:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:33:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:56,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:56,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:33:57,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057251490] [2020-09-25 14:33:57,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:57,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:57,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358300002] [2020-09-25 14:33:57,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:57,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:57,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:57,051 INFO L87 Difference]: Start difference. First operand 1038 states and 1292 transitions. Second operand 3 states. [2020-09-25 14:33:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:57,142 INFO L93 Difference]: Finished difference Result 1932 states and 2440 transitions. [2020-09-25 14:33:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:57,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-25 14:33:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:57,151 INFO L225 Difference]: With dead ends: 1932 [2020-09-25 14:33:57,152 INFO L226 Difference]: Without dead ends: 1334 [2020-09-25 14:33:57,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:57,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-25 14:33:57,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1334. [2020-09-25 14:33:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-09-25 14:33:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1672 transitions. [2020-09-25 14:33:57,197 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1672 transitions. Word has length 229 [2020-09-25 14:33:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:57,198 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1672 transitions. [2020-09-25 14:33:57,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1672 transitions. [2020-09-25 14:33:57,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 14:33:57,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:57,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:57,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:33:57,206 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1652979383, now seen corresponding path program 1 times [2020-09-25 14:33:57,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:57,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398499883] [2020-09-25 14:33:57,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:33:57,265 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:33:57,265 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:33:57,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:33:57,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:33:57 BoogieIcfgContainer [2020-09-25 14:33:57,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:33:57,312 INFO L168 Benchmark]: Toolchain (without parser) took 9395.92 ms. Allocated memory was 140.5 MB in the beginning and 324.5 MB in the end (delta: 184.0 MB). Free memory was 103.5 MB in the beginning and 125.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 162.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:57,313 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:33:57,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.72 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 102.8 MB in the beginning and 177.0 MB in the end (delta: -74.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:57,315 INFO L168 Benchmark]: Boogie Preprocessor took 66.72 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 174.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:57,315 INFO L168 Benchmark]: RCFGBuilder took 1135.60 ms. Allocated memory is still 201.3 MB. Free memory was 174.3 MB in the beginning and 105.2 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:57,316 INFO L168 Benchmark]: TraceAbstraction took 7602.45 ms. Allocated memory was 201.3 MB in the beginning and 324.5 MB in the end (delta: 123.2 MB). Free memory was 104.6 MB in the beginning and 125.3 MB in the end (delta: -20.8 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:57,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 579.72 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 102.8 MB in the beginning and 177.0 MB in the end (delta: -74.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.72 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 174.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1135.60 ms. Allocated memory is still 201.3 MB. Free memory was 174.3 MB in the beginning and 105.2 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7602.45 ms. Allocated memory was 201.3 MB in the beginning and 324.5 MB in the end (delta: 123.2 MB). Free memory was 104.6 MB in the beginning and 125.3 MB in the end (delta: -20.8 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 607]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L612] int s ; [L613] int tmp ; [L617] s = 8464 [L618] 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 ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [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 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [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] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND FALSE !(tmp___1 + 12288) [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L296] COND TRUE \read(s__hit) [L297] s__state = 8656 [L301] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] COND FALSE !(! tmp___9) [L495] ret = __VERIFIER_nondet_int() [L496] COND TRUE blastFlag == 2 [L497] blastFlag = 3 [L499] COND FALSE !(ret <= 0) [L502] s__state = 8672 [L503] s__init_num = 0 [L504] COND FALSE !(! tmp___10) [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND FALSE !(s__state == 8656) [L194] COND FALSE !(s__state == 8657) [L197] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND TRUE blastFlag == 3 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 411 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.4s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2222 SDtfs, 1822 SDslu, 2427 SDs, 0 SdLazy, 322 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1334occurred in iteration=5, 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, 5 MinimizatonAttempts, 37 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 1309 NumberOfCodeBlocks, 1309 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1029 ConstructedInterpolants, 0 QuantifiedInterpolants, 357575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 71/71 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...