/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_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:16:39,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:16:39,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:16:39,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:16:39,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:16:39,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:16:39,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:16:39,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:16:39,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:16:39,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:16:39,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:16:39,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:16:39,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:16:39,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:16:39,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:16:39,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:16:39,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:16:39,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:16:39,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:16:39,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:16:39,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:16:39,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:16:39,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:16:39,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:16:39,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:16:39,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:16:39,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:16:39,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:16:39,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:16:39,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:16:39,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:16:39,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:16:39,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:16:39,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:16:39,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:16:39,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:16:39,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:16:39,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:16:39,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:16:39,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:16:39,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:16:39,548 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 18:16:39,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:16:39,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:16:39,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:16:39,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:16:39,595 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:16:39,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:16:39,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:16:39,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:16:39,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:16:39,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:16:39,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:16:39,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:16:39,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:16:39,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:16:39,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:16:39,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:16:39,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:16:39,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:16:39,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:16:39,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:16:39,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:16:39,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:39,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:16:39,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:16:39,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:16:39,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:16:39,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:16:39,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:16:39,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:16:39,601 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 18:16:40,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:16:40,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:16:40,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:16:40,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:16:40,179 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:16:40,180 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-24 18:16:40,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92c21974/23b9c7f7c44b443eaa7cea4d9c450f52/FLAG4b2a39f13 [2020-09-24 18:16:40,863 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:16:40,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-24 18:16:40,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92c21974/23b9c7f7c44b443eaa7cea4d9c450f52/FLAG4b2a39f13 [2020-09-24 18:16:41,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92c21974/23b9c7f7c44b443eaa7cea4d9c450f52 [2020-09-24 18:16:41,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:16:41,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:16:41,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:41,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:16:41,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:16:41,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259f9f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41, skipping insertion in model container [2020-09-24 18:16:41,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:16:41,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:16:41,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:41,690 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:16:41,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:41,790 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:16:41,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41 WrapperNode [2020-09-24 18:16:41,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:41,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:16:41,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:16:41,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:16:41,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (1/1) ... [2020-09-24 18:16:41,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:16:41,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:16:41,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:16:41,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:16:41,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (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 18:16:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:16:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:16:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 18:16:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:16:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:16:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:16:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:16:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 18:16:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 18:16:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:16:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:16:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:16:42,202 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:42,860 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 18:16:42,860 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 18:16:42,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:16:42,880 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:16:42,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:42 BoogieIcfgContainer [2020-09-24 18:16:42,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:16:42,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:16:42,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:16:42,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:16:42,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:16:41" (1/3) ... [2020-09-24 18:16:42,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e4a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:42, skipping insertion in model container [2020-09-24 18:16:42,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:41" (2/3) ... [2020-09-24 18:16:42,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e4a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:42, skipping insertion in model container [2020-09-24 18:16:42,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:42" (3/3) ... [2020-09-24 18:16:42,905 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-09-24 18:16:42,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:16:42,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:16:42,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:16:42,992 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:16:42,992 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:16:42,993 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:16:42,993 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:16:42,993 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:16:42,993 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:16:42,993 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:16:42,994 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:16:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-09-24 18:16:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:16:43,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:43,059 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] [2020-09-24 18:16:43,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:43,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:43,066 INFO L82 PathProgramCache]: Analyzing trace with hash -51904500, now seen corresponding path program 1 times [2020-09-24 18:16:43,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:43,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122287980] [2020-09-24 18:16:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:44,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:44,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-24 18:16:44,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-09-24 18:16:44,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 18:16:44,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 18:16:44,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:16:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:44,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:44,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:44,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:44,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:44,772 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 18:16:44,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122287980] [2020-09-24 18:16:44,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:44,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:44,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177984585] [2020-09-24 18:16:44,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:44,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:44,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:44,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:44,817 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 3 states. [2020-09-24 18:16:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:45,012 INFO L93 Difference]: Finished difference Result 927 states and 1215 transitions. [2020-09-24 18:16:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:45,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-09-24 18:16:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:45,039 INFO L225 Difference]: With dead ends: 927 [2020-09-24 18:16:45,040 INFO L226 Difference]: Without dead ends: 600 [2020-09-24 18:16:45,050 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 18:16:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-09-24 18:16:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2020-09-24 18:16:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-09-24 18:16:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 729 transitions. [2020-09-24 18:16:45,170 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 729 transitions. Word has length 181 [2020-09-24 18:16:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:45,173 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 729 transitions. [2020-09-24 18:16:45,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 729 transitions. [2020-09-24 18:16:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 18:16:45,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:45,189 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] [2020-09-24 18:16:45,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:16:45,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:45,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:45,190 INFO L82 PathProgramCache]: Analyzing trace with hash -144089876, now seen corresponding path program 1 times [2020-09-24 18:16:45,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:45,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988342984] [2020-09-24 18:16:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 18:16:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-24 18:16:45,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-24 18:16:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:16:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:45,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:45,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:45,861 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 18:16:45,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988342984] [2020-09-24 18:16:45,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:45,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:45,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357568036] [2020-09-24 18:16:45,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:45,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:45,866 INFO L87 Difference]: Start difference. First operand 600 states and 729 transitions. Second operand 3 states. [2020-09-24 18:16:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:45,940 INFO L93 Difference]: Finished difference Result 1056 states and 1314 transitions. [2020-09-24 18:16:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:45,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-09-24 18:16:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:45,947 INFO L225 Difference]: With dead ends: 1056 [2020-09-24 18:16:45,947 INFO L226 Difference]: Without dead ends: 825 [2020-09-24 18:16:45,950 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 18:16:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-09-24 18:16:45,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2020-09-24 18:16:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-09-24 18:16:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1016 transitions. [2020-09-24 18:16:45,977 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1016 transitions. Word has length 204 [2020-09-24 18:16:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:45,978 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1016 transitions. [2020-09-24 18:16:45,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1016 transitions. [2020-09-24 18:16:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 18:16:45,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:45,986 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] [2020-09-24 18:16:45,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:16:45,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:45,988 INFO L82 PathProgramCache]: Analyzing trace with hash 955931285, now seen corresponding path program 1 times [2020-09-24 18:16:45,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:45,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079267975] [2020-09-24 18:16:45,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:46,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:46,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:46,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 18:16:46,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-24 18:16:46,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-09-24 18:16:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:16:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:46,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:46,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:46,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:46,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:46,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:46,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:46,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:46,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:46,521 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 18:16:46,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079267975] [2020-09-24 18:16:46,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:46,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:46,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626741397] [2020-09-24 18:16:46,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:46,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:46,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:46,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:46,524 INFO L87 Difference]: Start difference. First operand 825 states and 1016 transitions. Second operand 3 states. [2020-09-24 18:16:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:46,848 INFO L93 Difference]: Finished difference Result 1672 states and 2159 transitions. [2020-09-24 18:16:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:46,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-24 18:16:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:46,856 INFO L225 Difference]: With dead ends: 1672 [2020-09-24 18:16:46,856 INFO L226 Difference]: Without dead ends: 991 [2020-09-24 18:16:46,858 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 18:16:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2020-09-24 18:16:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 960. [2020-09-24 18:16:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-24 18:16:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1166 transitions. [2020-09-24 18:16:46,888 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1166 transitions. Word has length 229 [2020-09-24 18:16:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:46,888 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1166 transitions. [2020-09-24 18:16:46,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:46,889 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1166 transitions. [2020-09-24 18:16:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 18:16:46,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:46,894 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] [2020-09-24 18:16:46,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:16:46,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:46,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1369562677, now seen corresponding path program 1 times [2020-09-24 18:16:46,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:46,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432950940] [2020-09-24 18:16:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:46,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:47,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:47,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 18:16:47,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-09-24 18:16:47,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-09-24 18:16:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:16:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:47,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:47,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:47,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:47,660 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 18:16:47,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432950940] [2020-09-24 18:16:47,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:47,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:47,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304118932] [2020-09-24 18:16:47,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:47,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:47,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:47,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:47,664 INFO L87 Difference]: Start difference. First operand 960 states and 1166 transitions. Second operand 3 states. [2020-09-24 18:16:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:47,946 INFO L93 Difference]: Finished difference Result 1884 states and 2352 transitions. [2020-09-24 18:16:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:47,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-24 18:16:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:47,952 INFO L225 Difference]: With dead ends: 1884 [2020-09-24 18:16:47,953 INFO L226 Difference]: Without dead ends: 1068 [2020-09-24 18:16:47,956 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 18:16:47,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-09-24 18:16:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1038. [2020-09-24 18:16:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-24 18:16:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1259 transitions. [2020-09-24 18:16:47,989 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1259 transitions. Word has length 229 [2020-09-24 18:16:47,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:47,990 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1259 transitions. [2020-09-24 18:16:47,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1259 transitions. [2020-09-24 18:16:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 18:16:47,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:47,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:47,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:16:47,997 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:47,998 INFO L82 PathProgramCache]: Analyzing trace with hash -875156998, now seen corresponding path program 1 times [2020-09-24 18:16:47,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:47,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274293447] [2020-09-24 18:16:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 18:16:49,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:16:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-09-24 18:16:49,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 18:16:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:16:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:49,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:49,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:49,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:49,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274293447] [2020-09-24 18:16:49,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:49,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:49,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699263926] [2020-09-24 18:16:49,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:49,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:49,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:49,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:49,963 INFO L87 Difference]: Start difference. First operand 1038 states and 1259 transitions. Second operand 3 states. [2020-09-24 18:16:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:50,014 INFO L93 Difference]: Finished difference Result 2745 states and 3364 transitions. [2020-09-24 18:16:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:50,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-09-24 18:16:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:50,027 INFO L225 Difference]: With dead ends: 2745 [2020-09-24 18:16:50,027 INFO L226 Difference]: Without dead ends: 1851 [2020-09-24 18:16:50,029 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 18:16:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-09-24 18:16:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1849. [2020-09-24 18:16:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1849 states. [2020-09-24 18:16:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2243 transitions. [2020-09-24 18:16:50,088 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2243 transitions. Word has length 236 [2020-09-24 18:16:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:50,089 INFO L479 AbstractCegarLoop]: Abstraction has 1849 states and 2243 transitions. [2020-09-24 18:16:50,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2243 transitions. [2020-09-24 18:16:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 18:16:50,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:50,101 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:50,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:16:50,101 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:50,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1405368712, now seen corresponding path program 1 times [2020-09-24 18:16:50,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:50,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103966333] [2020-09-24 18:16:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:51,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:51,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 18:16:51,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:16:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1612 [2020-09-24 18:16:51,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-24 18:16:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:16:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:51,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:51,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:51,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:51,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:16:51,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:51,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:51,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 18:16:51,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103966333] [2020-09-24 18:16:51,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:51,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:51,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533927268] [2020-09-24 18:16:51,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:51,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:51,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:51,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:51,875 INFO L87 Difference]: Start difference. First operand 1849 states and 2243 transitions. Second operand 3 states. [2020-09-24 18:16:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:51,960 INFO L93 Difference]: Finished difference Result 5247 states and 6414 transitions. [2020-09-24 18:16:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:51,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-24 18:16:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:51,981 INFO L225 Difference]: With dead ends: 5247 [2020-09-24 18:16:51,981 INFO L226 Difference]: Without dead ends: 3542 [2020-09-24 18:16:51,986 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 18:16:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2020-09-24 18:16:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3540. [2020-09-24 18:16:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2020-09-24 18:16:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4303 transitions. [2020-09-24 18:16:52,096 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4303 transitions. Word has length 237 [2020-09-24 18:16:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:52,097 INFO L479 AbstractCegarLoop]: Abstraction has 3540 states and 4303 transitions. [2020-09-24 18:16:52,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4303 transitions. [2020-09-24 18:16:52,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 18:16:52,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:52,111 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:52,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:16:52,112 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1625861187, now seen corresponding path program 1 times [2020-09-24 18:16:52,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:52,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192250299] [2020-09-24 18:16:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:53,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:53,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 18:16:53,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:16:53,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-24 18:16:53,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:53,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-24 18:16:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 18:16:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:53,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:53,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:16:53,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:53,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:16:53,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192250299] [2020-09-24 18:16:53,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:53,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:16:53,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777650404] [2020-09-24 18:16:53,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:16:53,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:53,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:16:53,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:16:53,411 INFO L87 Difference]: Start difference. First operand 3540 states and 4303 transitions. Second operand 3 states. [2020-09-24 18:16:53,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:53,529 INFO L93 Difference]: Finished difference Result 6930 states and 8466 transitions. [2020-09-24 18:16:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:16:53,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-24 18:16:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:53,550 INFO L225 Difference]: With dead ends: 6930 [2020-09-24 18:16:53,550 INFO L226 Difference]: Without dead ends: 4664 [2020-09-24 18:16:53,555 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 18:16:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2020-09-24 18:16:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 4664. [2020-09-24 18:16:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2020-09-24 18:16:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 5681 transitions. [2020-09-24 18:16:53,670 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 5681 transitions. Word has length 237 [2020-09-24 18:16:53,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:53,671 INFO L479 AbstractCegarLoop]: Abstraction has 4664 states and 5681 transitions. [2020-09-24 18:16:53,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:16:53,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 5681 transitions. [2020-09-24 18:16:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 18:16:53,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:53,687 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] [2020-09-24 18:16:53,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:16:53,688 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:53,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1652979383, now seen corresponding path program 1 times [2020-09-24 18:16:53,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:53,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431567124] [2020-09-24 18:16:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:16:53,729 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:16:53,729 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:16:53,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:16:53,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:16:53 BoogieIcfgContainer [2020-09-24 18:16:53,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:16:53,798 INFO L168 Benchmark]: Toolchain (without parser) took 12611.69 ms. Allocated memory was 138.9 MB in the beginning and 413.1 MB in the end (delta: 274.2 MB). Free memory was 100.3 MB in the beginning and 216.3 MB in the end (delta: -116.0 MB). Peak memory consumption was 158.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:53,802 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:16:53,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.52 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 99.7 MB in the beginning and 175.4 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:53,806 INFO L168 Benchmark]: Boogie Preprocessor took 90.46 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 172.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:53,806 INFO L168 Benchmark]: RCFGBuilder took 1008.61 ms. Allocated memory is still 200.3 MB. Free memory was 172.1 MB in the beginning and 103.6 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:53,809 INFO L168 Benchmark]: TraceAbstraction took 10900.32 ms. Allocated memory was 200.3 MB in the beginning and 413.1 MB in the end (delta: 212.9 MB). Free memory was 103.0 MB in the beginning and 216.3 MB in the end (delta: -113.3 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:53,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 598.52 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 99.7 MB in the beginning and 175.4 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.46 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 172.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1008.61 ms. Allocated memory is still 200.3 MB. Free memory was 172.1 MB in the beginning and 103.6 MB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10900.32 ms. Allocated memory was 200.3 MB in the beginning and 413.1 MB in the end (delta: 212.9 MB). Free memory was 103.0 MB in the beginning and 216.3 MB in the end (delta: -113.3 MB). Peak memory consumption was 99.6 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: 10.7s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3450 SDtfs, 1388 SDslu, 2830 SDs, 0 SdLazy, 317 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4664occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 65 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 1828 NumberOfCodeBlocks, 1828 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1546 ConstructedInterpolants, 0 QuantifiedInterpolants, 477945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 203/203 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...