/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=SMALLEST --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_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:16:21,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:16:21,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:16:21,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:16:21,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:16:21,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:16:21,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:16:21,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:16:21,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:16:21,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:16:21,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:16:21,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:16:21,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:16:21,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:16:21,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:16:21,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:16:21,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:16:21,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:16:21,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:16:21,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:16:21,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:16:21,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:16:21,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:16:21,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:16:21,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:16:21,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:16:21,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:16:21,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:16:21,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:16:21,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:16:21,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:16:21,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:16:21,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:16:21,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:16:21,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:16:21,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:16:21,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:16:21,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:16:21,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:16:21,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:16:21,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:16:21,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:16:21,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:16:21,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:16:21,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:16:21,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:16:21,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:16:21,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:16:21,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:16:21,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:16:21,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:16:21,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:16:21,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:16:21,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:16:21,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:16:21,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:16:21,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:16:21,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:16:21,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:16:21,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:16:21,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:16:21,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:16:21,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:16:21,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:21,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:16:21,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:16:21,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:16:21,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:16:21,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:16:21,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:16:21,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:16:21,653 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:16:22,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:16:22,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:16:22,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:16:22,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:16:22,196 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:16:22,198 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-24 18:16:22,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6db5e334f/b34e56527f1f401d9c46cb962e999f36/FLAGab96cbe85 [2020-09-24 18:16:22,846 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:16:22,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-24 18:16:22,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6db5e334f/b34e56527f1f401d9c46cb962e999f36/FLAGab96cbe85 [2020-09-24 18:16:23,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6db5e334f/b34e56527f1f401d9c46cb962e999f36 [2020-09-24 18:16:23,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:16:23,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:16:23,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:23,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:16:23,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:16:23,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448d4077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23, skipping insertion in model container [2020-09-24 18:16:23,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:16:23,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:16:23,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:23,652 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:16:23,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:23,849 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:16:23,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23 WrapperNode [2020-09-24 18:16:23,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:23,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:16:23,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:16:23,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:16:23,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... [2020-09-24 18:16:23,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:16:23,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:16:23,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:16:23,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:16:23,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:23,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:16:23,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:16:23,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 18:16:23,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:16:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:16:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:16:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:16:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 18:16:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 18:16:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:16:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:16:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:16:24,268 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:24,928 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 18:16:24,928 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 18:16:24,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:16:24,947 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:16:24,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:24 BoogieIcfgContainer [2020-09-24 18:16:24,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:16:24,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:16:24,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:16:24,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:16:24,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:16:23" (1/3) ... [2020-09-24 18:16:24,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12515426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:24, skipping insertion in model container [2020-09-24 18:16:24,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:23" (2/3) ... [2020-09-24 18:16:24,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12515426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:24, skipping insertion in model container [2020-09-24 18:16:24,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:24" (3/3) ... [2020-09-24 18:16:24,967 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2020-09-24 18:16:24,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:16:24,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:16:25,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:16:25,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:16:25,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:16:25,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:16:25,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:16:25,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:16:25,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:16:25,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:16:25,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:16:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-09-24 18:16:25,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 18:16:25,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:25,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:25,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:25,116 INFO L82 PathProgramCache]: Analyzing trace with hash 42998903, now seen corresponding path program 1 times [2020-09-24 18:16:25,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:25,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118708183] [2020-09-24 18:16:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 18:16:26,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-09-24 18:16:26,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 18:16:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 18:16:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 18:16:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:26,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:26,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:26,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:26,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118708183] [2020-09-24 18:16:26,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:26,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:26,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637193876] [2020-09-24 18:16:26,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:26,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:26,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:26,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:26,533 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 3 states. [2020-09-24 18:16:26,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:26,684 INFO L93 Difference]: Finished difference Result 967 states and 1255 transitions. [2020-09-24 18:16:26,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:26,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-24 18:16:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:26,711 INFO L225 Difference]: With dead ends: 967 [2020-09-24 18:16:26,712 INFO L226 Difference]: Without dead ends: 624 [2020-09-24 18:16:26,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-09-24 18:16:26,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2020-09-24 18:16:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-09-24 18:16:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 754 transitions. [2020-09-24 18:16:26,823 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 754 transitions. Word has length 169 [2020-09-24 18:16:26,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:26,825 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 754 transitions. [2020-09-24 18:16:26,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 754 transitions. [2020-09-24 18:16:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 18:16:26,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:26,845 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] [2020-09-24 18:16:26,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:16:26,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash 572919500, now seen corresponding path program 1 times [2020-09-24 18:16:26,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:26,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301537870] [2020-09-24 18:16:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:27,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 18:16:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-24 18:16:27,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-09-24 18:16:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:16:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:27,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:27,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:27,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:27,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:27,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:27,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301537870] [2020-09-24 18:16:27,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:27,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:27,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869619742] [2020-09-24 18:16:27,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:27,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:27,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:27,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:27,500 INFO L87 Difference]: Start difference. First operand 624 states and 754 transitions. Second operand 3 states. [2020-09-24 18:16:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:27,816 INFO L93 Difference]: Finished difference Result 1276 states and 1617 transitions. [2020-09-24 18:16:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:27,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-24 18:16:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:27,829 INFO L225 Difference]: With dead ends: 1276 [2020-09-24 18:16:27,829 INFO L226 Difference]: Without dead ends: 759 [2020-09-24 18:16:27,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-09-24 18:16:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 728. [2020-09-24 18:16:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-09-24 18:16:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 890 transitions. [2020-09-24 18:16:27,886 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 890 transitions. Word has length 192 [2020-09-24 18:16:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:27,887 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 890 transitions. [2020-09-24 18:16:27,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 890 transitions. [2020-09-24 18:16:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 18:16:27,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:27,893 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] [2020-09-24 18:16:27,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:16:27,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:27,894 INFO L82 PathProgramCache]: Analyzing trace with hash -442840212, now seen corresponding path program 1 times [2020-09-24 18:16:27,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:27,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805581653] [2020-09-24 18:16:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 18:16:28,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-09-24 18:16:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 18:16:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 18:16:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:28,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:28,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805581653] [2020-09-24 18:16:28,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:28,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:28,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646791197] [2020-09-24 18:16:28,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:28,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:28,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:28,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:28,778 INFO L87 Difference]: Start difference. First operand 728 states and 890 transitions. Second operand 3 states. [2020-09-24 18:16:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:28,847 INFO L93 Difference]: Finished difference Result 1325 states and 1650 transitions. [2020-09-24 18:16:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:28,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-09-24 18:16:28,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:28,854 INFO L225 Difference]: With dead ends: 1325 [2020-09-24 18:16:28,855 INFO L226 Difference]: Without dead ends: 1023 [2020-09-24 18:16:28,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-24 18:16:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2020-09-24 18:16:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-09-24 18:16:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1263 transitions. [2020-09-24 18:16:28,888 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1263 transitions. Word has length 199 [2020-09-24 18:16:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:28,889 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1263 transitions. [2020-09-24 18:16:28,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1263 transitions. [2020-09-24 18:16:28,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 18:16:28,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:28,895 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] [2020-09-24 18:16:28,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:16:28,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:28,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1902289806, now seen corresponding path program 1 times [2020-09-24 18:16:28,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:28,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611331050] [2020-09-24 18:16:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-24 18:16:29,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:29,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-24 18:16:29,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-24 18:16:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:16:29,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:29,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:29,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:29,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:29,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:29,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:16:29,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611331050] [2020-09-24 18:16:29,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:29,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:29,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665800070] [2020-09-24 18:16:29,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:29,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:29,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:29,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:29,370 INFO L87 Difference]: Start difference. First operand 1023 states and 1263 transitions. Second operand 3 states. [2020-09-24 18:16:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:29,635 INFO L93 Difference]: Finished difference Result 2087 states and 2672 transitions. [2020-09-24 18:16:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:29,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-24 18:16:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:29,642 INFO L225 Difference]: With dead ends: 2087 [2020-09-24 18:16:29,643 INFO L226 Difference]: Without dead ends: 1195 [2020-09-24 18:16:29,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-09-24 18:16:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1155. [2020-09-24 18:16:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-24 18:16:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1410 transitions. [2020-09-24 18:16:29,676 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1410 transitions. Word has length 217 [2020-09-24 18:16:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:29,677 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1410 transitions. [2020-09-24 18:16:29,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:29,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1410 transitions. [2020-09-24 18:16:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 18:16:29,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:29,682 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] [2020-09-24 18:16:29,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:16:29,683 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:29,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1839961070, now seen corresponding path program 1 times [2020-09-24 18:16:29,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:29,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240448125] [2020-09-24 18:16:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:30,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-24 18:16:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-24 18:16:30,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-24 18:16:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 18:16:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:30,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:30,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:30,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:16:30,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240448125] [2020-09-24 18:16:30,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:30,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:30,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660224473] [2020-09-24 18:16:30,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:30,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:30,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:30,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:30,221 INFO L87 Difference]: Start difference. First operand 1155 states and 1410 transitions. Second operand 3 states. [2020-09-24 18:16:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:30,315 INFO L93 Difference]: Finished difference Result 2179 states and 2690 transitions. [2020-09-24 18:16:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:30,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-24 18:16:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:30,327 INFO L225 Difference]: With dead ends: 2179 [2020-09-24 18:16:30,327 INFO L226 Difference]: Without dead ends: 1494 [2020-09-24 18:16:30,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-09-24 18:16:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2020-09-24 18:16:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-24 18:16:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1833 transitions. [2020-09-24 18:16:30,374 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1833 transitions. Word has length 217 [2020-09-24 18:16:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:30,375 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1833 transitions. [2020-09-24 18:16:30,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1833 transitions. [2020-09-24 18:16:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 18:16:30,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:30,388 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] [2020-09-24 18:16:30,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:16:30,389 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1338604276, now seen corresponding path program 1 times [2020-09-24 18:16:30,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:30,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014646725] [2020-09-24 18:16:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:16:30,445 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:16:30,445 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:16:30,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:16:30,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:16:30 BoogieIcfgContainer [2020-09-24 18:16:30,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:16:30,501 INFO L168 Benchmark]: Toolchain (without parser) took 7345.22 ms. Allocated memory was 144.2 MB in the beginning and 318.8 MB in the end (delta: 174.6 MB). Free memory was 103.4 MB in the beginning and 109.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 169.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:30,502 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 144.2 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-24 18:16:30,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.39 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 102.9 MB in the beginning and 178.8 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:30,504 INFO L168 Benchmark]: Boogie Preprocessor took 65.14 ms. Allocated memory is still 203.9 MB. Free memory was 178.8 MB in the beginning and 175.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:30,505 INFO L168 Benchmark]: RCFGBuilder took 1040.77 ms. Allocated memory is still 203.9 MB. Free memory was 175.9 MB in the beginning and 107.5 MB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:30,506 INFO L168 Benchmark]: TraceAbstraction took 5538.26 ms. Allocated memory was 203.9 MB in the beginning and 318.8 MB in the end (delta: 114.8 MB). Free memory was 106.5 MB in the beginning and 109.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 112.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:30,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 144.2 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.39 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 102.9 MB in the beginning and 178.8 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.14 ms. Allocated memory is still 203.9 MB. Free memory was 178.8 MB in the beginning and 175.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1040.77 ms. Allocated memory is still 203.9 MB. Free memory was 175.9 MB in the beginning and 107.5 MB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5538.26 ms. Allocated memory was 203.9 MB in the beginning and 318.8 MB in the end (delta: 114.8 MB). Free memory was 106.5 MB in the beginning and 109.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 112.3 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, 416 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2324 SDtfs, 988 SDslu, 1958 SDs, 0 SdLazy, 330 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred 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, 71 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1263 NumberOfCodeBlocks, 1263 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 285621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 98/98 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...