/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:49:01,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:49:01,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:49:01,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:49:01,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:49:01,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:49:01,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:49:01,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:49:01,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:49:01,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:49:01,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:49:01,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:49:01,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:49:01,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:49:01,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:49:01,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:49:01,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:49:01,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:49:01,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:49:01,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:49:01,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:49:01,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:49:01,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:49:01,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:49:01,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:49:01,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:49:01,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:49:01,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:49:01,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:49:01,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:49:01,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:49:01,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:49:01,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:49:01,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:49:01,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:49:01,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:49:01,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:49:01,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:49:01,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:49:01,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:49:01,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:49:01,916 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 [2020-08-19 06:49:01,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:49:01,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:49:01,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:49:01,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:49:01,942 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:49:01,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:49:01,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:49:01,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:49:01,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:49:01,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:49:01,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:49:01,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:49:01,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:49:01,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:49:01,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:49:01,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:49:01,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:49:01,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:49:01,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:49:01,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:49:01,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:49:01,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:49:01,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:49:01,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:49:01,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:49:01,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:49:01,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:49:01,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:49:01,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:49:01,947 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:49:02,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:49:02,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:49:02,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:49:02,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:49:02,318 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:49:02,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-08-19 06:49:02,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccbf3844f/e4b710f083d84b58b1b810a0062c0998/FLAGab8fd3c88 [2020-08-19 06:49:02,874 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:49:02,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-08-19 06:49:02,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccbf3844f/e4b710f083d84b58b1b810a0062c0998/FLAGab8fd3c88 [2020-08-19 06:49:03,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccbf3844f/e4b710f083d84b58b1b810a0062c0998 [2020-08-19 06:49:03,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:49:03,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:49:03,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:03,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:49:03,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:49:03,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e93eba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03, skipping insertion in model container [2020-08-19 06:49:03,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:49:03,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:49:03,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:03,538 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:49:03,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:03,714 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:49:03,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03 WrapperNode [2020-08-19 06:49:03,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:03,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:49:03,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:49:03,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:49:03,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (1/1) ... [2020-08-19 06:49:03,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:49:03,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:49:03,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:49:03,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:49:03,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (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 [2020-08-19 06:49:03,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:49:03,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:49:03,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-19 06:49:03,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:49:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:49:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 06:49:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:49:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 06:49:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-19 06:49:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:49:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:49:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:49:04,077 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:49:04,680 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-19 06:49:04,680 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-19 06:49:04,697 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:49:04,697 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:49:04,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:04 BoogieIcfgContainer [2020-08-19 06:49:04,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:49:04,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:49:04,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:49:04,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:49:04,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:49:03" (1/3) ... [2020-08-19 06:49:04,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409b918d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:04, skipping insertion in model container [2020-08-19 06:49:04,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:03" (2/3) ... [2020-08-19 06:49:04,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409b918d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:04, skipping insertion in model container [2020-08-19 06:49:04,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:04" (3/3) ... [2020-08-19 06:49:04,723 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-08-19 06:49:04,734 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:49:04,745 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:49:04,760 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:49:04,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:49:04,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:49:04,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:49:04,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:49:04,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:49:04,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:49:04,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:49:04,794 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:49:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-08-19 06:49:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 06:49:04,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:04,832 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] [2020-08-19 06:49:04,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:04,838 INFO L82 PathProgramCache]: Analyzing trace with hash 317102767, now seen corresponding path program 1 times [2020-08-19 06:49:04,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:04,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596402145] [2020-08-19 06:49:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:05,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596402145] [2020-08-19 06:49:05,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:05,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:05,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148008059] [2020-08-19 06:49:05,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:05,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:05,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:05,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:05,197 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 5 states. [2020-08-19 06:49:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:05,690 INFO L93 Difference]: Finished difference Result 376 states and 647 transitions. [2020-08-19 06:49:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:05,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-08-19 06:49:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:05,711 INFO L225 Difference]: With dead ends: 376 [2020-08-19 06:49:05,711 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 06:49:05,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:49:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 06:49:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2020-08-19 06:49:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-19 06:49:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 279 transitions. [2020-08-19 06:49:05,776 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 279 transitions. Word has length 31 [2020-08-19 06:49:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:05,777 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 279 transitions. [2020-08-19 06:49:05,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 279 transitions. [2020-08-19 06:49:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-19 06:49:05,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:05,779 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] [2020-08-19 06:49:05,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:49:05,780 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:05,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:05,780 INFO L82 PathProgramCache]: Analyzing trace with hash 115186168, now seen corresponding path program 1 times [2020-08-19 06:49:05,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:05,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760560844] [2020-08-19 06:49:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:05,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760560844] [2020-08-19 06:49:05,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:05,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:49:05,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829779327] [2020-08-19 06:49:05,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:49:05,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:05,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:49:05,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:49:05,964 INFO L87 Difference]: Start difference. First operand 189 states and 279 transitions. Second operand 6 states. [2020-08-19 06:49:06,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:06,365 INFO L93 Difference]: Finished difference Result 444 states and 670 transitions. [2020-08-19 06:49:06,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:49:06,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-08-19 06:49:06,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:06,370 INFO L225 Difference]: With dead ends: 444 [2020-08-19 06:49:06,370 INFO L226 Difference]: Without dead ends: 256 [2020-08-19 06:49:06,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:49:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-19 06:49:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 217. [2020-08-19 06:49:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-08-19 06:49:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 318 transitions. [2020-08-19 06:49:06,398 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 318 transitions. Word has length 35 [2020-08-19 06:49:06,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:06,399 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 318 transitions. [2020-08-19 06:49:06,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:49:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 318 transitions. [2020-08-19 06:49:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-19 06:49:06,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:06,403 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 06:49:06,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:49:06,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:06,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1717181183, now seen corresponding path program 1 times [2020-08-19 06:49:06,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:06,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957338114] [2020-08-19 06:49:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:06,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957338114] [2020-08-19 06:49:06,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:06,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:06,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551249577] [2020-08-19 06:49:06,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:06,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:06,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:06,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:06,531 INFO L87 Difference]: Start difference. First operand 217 states and 318 transitions. Second operand 3 states. [2020-08-19 06:49:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:06,778 INFO L93 Difference]: Finished difference Result 505 states and 753 transitions. [2020-08-19 06:49:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:06,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-08-19 06:49:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:06,781 INFO L225 Difference]: With dead ends: 505 [2020-08-19 06:49:06,782 INFO L226 Difference]: Without dead ends: 289 [2020-08-19 06:49:06,783 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 [2020-08-19 06:49:06,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-19 06:49:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 259. [2020-08-19 06:49:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-19 06:49:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 380 transitions. [2020-08-19 06:49:06,801 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 380 transitions. Word has length 49 [2020-08-19 06:49:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:06,802 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 380 transitions. [2020-08-19 06:49:06,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 380 transitions. [2020-08-19 06:49:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:49:06,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:06,805 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 06:49:06,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:49:06,806 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:06,806 INFO L82 PathProgramCache]: Analyzing trace with hash -544977436, now seen corresponding path program 1 times [2020-08-19 06:49:06,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:06,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854184875] [2020-08-19 06:49:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:06,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854184875] [2020-08-19 06:49:06,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:49:06,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-08-19 06:49:06,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412831360] [2020-08-19 06:49:06,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:49:06,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:06,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:49:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:49:06,896 INFO L87 Difference]: Start difference. First operand 259 states and 380 transitions. Second operand 4 states. [2020-08-19 06:49:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:07,157 INFO L93 Difference]: Finished difference Result 665 states and 981 transitions. [2020-08-19 06:49:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:07,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-08-19 06:49:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:07,161 INFO L225 Difference]: With dead ends: 665 [2020-08-19 06:49:07,161 INFO L226 Difference]: Without dead ends: 407 [2020-08-19 06:49:07,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:07,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-19 06:49:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 285. [2020-08-19 06:49:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-08-19 06:49:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 417 transitions. [2020-08-19 06:49:07,195 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 417 transitions. Word has length 57 [2020-08-19 06:49:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:07,197 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 417 transitions. [2020-08-19 06:49:07,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:49:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 417 transitions. [2020-08-19 06:49:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 06:49:07,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:07,207 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 06:49:07,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:49:07,210 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash 410586329, now seen corresponding path program 1 times [2020-08-19 06:49:07,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:07,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450171650] [2020-08-19 06:49:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 06:49:07,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450171650] [2020-08-19 06:49:07,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:07,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:07,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836836350] [2020-08-19 06:49:07,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:07,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:07,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:07,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:07,311 INFO L87 Difference]: Start difference. First operand 285 states and 417 transitions. Second operand 5 states. [2020-08-19 06:49:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:07,480 INFO L93 Difference]: Finished difference Result 588 states and 861 transitions. [2020-08-19 06:49:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:07,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-08-19 06:49:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:07,484 INFO L225 Difference]: With dead ends: 588 [2020-08-19 06:49:07,487 INFO L226 Difference]: Without dead ends: 316 [2020-08-19 06:49:07,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:49:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-19 06:49:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 310. [2020-08-19 06:49:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-19 06:49:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 450 transitions. [2020-08-19 06:49:07,503 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 450 transitions. Word has length 67 [2020-08-19 06:49:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:07,503 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 450 transitions. [2020-08-19 06:49:07,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 450 transitions. [2020-08-19 06:49:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 06:49:07,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:07,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:07,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:49:07,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:07,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash -206772919, now seen corresponding path program 1 times [2020-08-19 06:49:07,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:07,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250774699] [2020-08-19 06:49:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 06:49:07,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250774699] [2020-08-19 06:49:07,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:07,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:07,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916271672] [2020-08-19 06:49:07,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:07,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:07,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:07,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:07,649 INFO L87 Difference]: Start difference. First operand 310 states and 450 transitions. Second operand 3 states. [2020-08-19 06:49:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:07,916 INFO L93 Difference]: Finished difference Result 689 states and 1019 transitions. [2020-08-19 06:49:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:07,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-08-19 06:49:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:07,922 INFO L225 Difference]: With dead ends: 689 [2020-08-19 06:49:07,923 INFO L226 Difference]: Without dead ends: 367 [2020-08-19 06:49:07,925 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 [2020-08-19 06:49:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-19 06:49:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 362. [2020-08-19 06:49:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-19 06:49:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 515 transitions. [2020-08-19 06:49:07,956 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 515 transitions. Word has length 77 [2020-08-19 06:49:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:07,957 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 515 transitions. [2020-08-19 06:49:07,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 515 transitions. [2020-08-19 06:49:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 06:49:07,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:07,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:07,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:49:07,961 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:07,961 INFO L82 PathProgramCache]: Analyzing trace with hash 67986695, now seen corresponding path program 1 times [2020-08-19 06:49:07,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:07,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090782634] [2020-08-19 06:49:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 06:49:08,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090782634] [2020-08-19 06:49:08,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:08,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:08,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669159845] [2020-08-19 06:49:08,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:08,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:08,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:08,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:08,069 INFO L87 Difference]: Start difference. First operand 362 states and 515 transitions. Second operand 3 states. [2020-08-19 06:49:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:08,286 INFO L93 Difference]: Finished difference Result 767 states and 1106 transitions. [2020-08-19 06:49:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:08,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-08-19 06:49:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:08,289 INFO L225 Difference]: With dead ends: 767 [2020-08-19 06:49:08,289 INFO L226 Difference]: Without dead ends: 401 [2020-08-19 06:49:08,292 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 [2020-08-19 06:49:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-08-19 06:49:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2020-08-19 06:49:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-19 06:49:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 559 transitions. [2020-08-19 06:49:08,309 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 559 transitions. Word has length 77 [2020-08-19 06:49:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:08,311 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 559 transitions. [2020-08-19 06:49:08,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 559 transitions. [2020-08-19 06:49:08,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 06:49:08,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:08,313 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-19 06:49:08,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:49:08,314 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1023176064, now seen corresponding path program 1 times [2020-08-19 06:49:08,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:08,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474588118] [2020-08-19 06:49:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-19 06:49:08,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474588118] [2020-08-19 06:49:08,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:08,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:08,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898029392] [2020-08-19 06:49:08,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:08,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:08,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:08,401 INFO L87 Difference]: Start difference. First operand 396 states and 559 transitions. Second operand 3 states. [2020-08-19 06:49:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:08,432 INFO L93 Difference]: Finished difference Result 785 states and 1109 transitions. [2020-08-19 06:49:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:08,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-08-19 06:49:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:08,435 INFO L225 Difference]: With dead ends: 785 [2020-08-19 06:49:08,436 INFO L226 Difference]: Without dead ends: 402 [2020-08-19 06:49:08,437 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 [2020-08-19 06:49:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-08-19 06:49:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 401. [2020-08-19 06:49:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-19 06:49:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 565 transitions. [2020-08-19 06:49:08,451 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 565 transitions. Word has length 79 [2020-08-19 06:49:08,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:08,452 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 565 transitions. [2020-08-19 06:49:08,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 565 transitions. [2020-08-19 06:49:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-08-19 06:49:08,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:08,454 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-19 06:49:08,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:49:08,454 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:08,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1094958026, now seen corresponding path program 1 times [2020-08-19 06:49:08,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:08,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100104138] [2020-08-19 06:49:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 06:49:08,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100104138] [2020-08-19 06:49:08,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:49:08,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-08-19 06:49:08,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937119387] [2020-08-19 06:49:08,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:49:08,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:08,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:49:08,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:49:08,531 INFO L87 Difference]: Start difference. First operand 401 states and 565 transitions. Second operand 4 states. [2020-08-19 06:49:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:08,760 INFO L93 Difference]: Finished difference Result 988 states and 1401 transitions. [2020-08-19 06:49:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:08,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-08-19 06:49:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:08,764 INFO L225 Difference]: With dead ends: 988 [2020-08-19 06:49:08,764 INFO L226 Difference]: Without dead ends: 555 [2020-08-19 06:49:08,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-08-19 06:49:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 451. [2020-08-19 06:49:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-19 06:49:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 638 transitions. [2020-08-19 06:49:08,782 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 638 transitions. Word has length 81 [2020-08-19 06:49:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:08,783 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 638 transitions. [2020-08-19 06:49:08,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:49:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 638 transitions. [2020-08-19 06:49:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:49:08,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:08,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 06:49:08,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:49:08,785 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:08,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1152174724, now seen corresponding path program 1 times [2020-08-19 06:49:08,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:08,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026326797] [2020-08-19 06:49:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 06:49:08,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026326797] [2020-08-19 06:49:08,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:08,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:08,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119407051] [2020-08-19 06:49:08,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:08,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:08,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:08,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:08,832 INFO L87 Difference]: Start difference. First operand 451 states and 638 transitions. Second operand 3 states. [2020-08-19 06:49:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:09,027 INFO L93 Difference]: Finished difference Result 936 states and 1328 transitions. [2020-08-19 06:49:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:09,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-08-19 06:49:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:09,031 INFO L225 Difference]: With dead ends: 936 [2020-08-19 06:49:09,031 INFO L226 Difference]: Without dead ends: 483 [2020-08-19 06:49:09,032 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 [2020-08-19 06:49:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-19 06:49:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 475. [2020-08-19 06:49:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-08-19 06:49:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 667 transitions. [2020-08-19 06:49:09,051 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 667 transitions. Word has length 84 [2020-08-19 06:49:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:09,051 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 667 transitions. [2020-08-19 06:49:09,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 667 transitions. [2020-08-19 06:49:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 06:49:09,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:09,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:09,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:49:09,055 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash 404037349, now seen corresponding path program 1 times [2020-08-19 06:49:09,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:09,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878117282] [2020-08-19 06:49:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-08-19 06:49:09,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878117282] [2020-08-19 06:49:09,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:09,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:09,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516480820] [2020-08-19 06:49:09,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:09,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:09,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:09,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:09,140 INFO L87 Difference]: Start difference. First operand 475 states and 667 transitions. Second operand 3 states. [2020-08-19 06:49:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:09,341 INFO L93 Difference]: Finished difference Result 965 states and 1373 transitions. [2020-08-19 06:49:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:09,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-08-19 06:49:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:09,345 INFO L225 Difference]: With dead ends: 965 [2020-08-19 06:49:09,345 INFO L226 Difference]: Without dead ends: 484 [2020-08-19 06:49:09,346 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 [2020-08-19 06:49:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-19 06:49:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 469. [2020-08-19 06:49:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-08-19 06:49:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 651 transitions. [2020-08-19 06:49:09,362 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 651 transitions. Word has length 99 [2020-08-19 06:49:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:09,363 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 651 transitions. [2020-08-19 06:49:09,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 651 transitions. [2020-08-19 06:49:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 06:49:09,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:09,365 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:09,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:49:09,366 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1557981007, now seen corresponding path program 1 times [2020-08-19 06:49:09,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:09,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572446575] [2020-08-19 06:49:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 06:49:09,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572446575] [2020-08-19 06:49:09,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:09,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:09,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148275809] [2020-08-19 06:49:09,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:09,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:09,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:09,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:09,442 INFO L87 Difference]: Start difference. First operand 469 states and 651 transitions. Second operand 3 states. [2020-08-19 06:49:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:09,517 INFO L93 Difference]: Finished difference Result 1381 states and 1919 transitions. [2020-08-19 06:49:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:09,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-08-19 06:49:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:09,523 INFO L225 Difference]: With dead ends: 1381 [2020-08-19 06:49:09,523 INFO L226 Difference]: Without dead ends: 925 [2020-08-19 06:49:09,525 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 [2020-08-19 06:49:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-08-19 06:49:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 923. [2020-08-19 06:49:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-08-19 06:49:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1278 transitions. [2020-08-19 06:49:09,557 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1278 transitions. Word has length 107 [2020-08-19 06:49:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:09,558 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1278 transitions. [2020-08-19 06:49:09,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1278 transitions. [2020-08-19 06:49:09,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 06:49:09,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:09,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:09,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:49:09,561 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:09,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2144787021, now seen corresponding path program 1 times [2020-08-19 06:49:09,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:09,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582198045] [2020-08-19 06:49:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:49:09,597 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:49:09,598 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:49:09,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:49:09,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:49:09 BoogieIcfgContainer [2020-08-19 06:49:09,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:49:09,657 INFO L168 Benchmark]: Toolchain (without parser) took 6435.35 ms. Allocated memory was 138.9 MB in the beginning and 291.5 MB in the end (delta: 152.6 MB). Free memory was 101.7 MB in the beginning and 167.2 MB in the end (delta: -65.5 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:09,661 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-08-19 06:49:09,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.61 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 177.1 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:09,662 INFO L168 Benchmark]: Boogie Preprocessor took 77.03 ms. Allocated memory is still 202.4 MB. Free memory was 177.1 MB in the beginning and 174.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:09,663 INFO L168 Benchmark]: RCFGBuilder took 914.03 ms. Allocated memory is still 202.4 MB. Free memory was 174.4 MB in the beginning and 120.1 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:09,671 INFO L168 Benchmark]: TraceAbstraction took 4939.36 ms. Allocated memory was 202.4 MB in the beginning and 291.5 MB in the end (delta: 89.1 MB). Free memory was 120.1 MB in the beginning and 167.2 MB in the end (delta: -47.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:09,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 497.61 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 177.1 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.03 ms. Allocated memory is still 202.4 MB. Free memory was 177.1 MB in the beginning and 174.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 914.03 ms. Allocated memory is still 202.4 MB. Free memory was 174.4 MB in the beginning and 120.1 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4939.36 ms. Allocated memory was 202.4 MB in the beginning and 291.5 MB in the end (delta: 89.1 MB). Free memory was 120.1 MB in the beginning and 167.2 MB in the end (delta: -47.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L653] 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 ; [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 ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength ; [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 = __VERIFIER_nondet_int() ; [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 ; [L72] s__state = initial_state [L73] blastFlag = 0 [L74] tmp = __VERIFIER_nondet_int() [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 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] 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 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND FALSE !(\read(s__hit)) [L294] s__state = 8512 [L296] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] 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 TRUE s__state == 8512 [L301] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L302] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L303] COND TRUE __cil_tmp56 + 256UL [L304] skip = 1 [L315] s__state = 8528 [L316] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] 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 TRUE s__state == 8528 [L320] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L321] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L323] __cil_tmp57 = (unsigned long )s__options [L324] COND TRUE __cil_tmp57 + 2097152UL [L325] s__s3__tmp__use_rsa_tmp = 1 [L330] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L357] ret = __VERIFIER_nondet_int() [L358] COND FALSE !(blastFlag == 6) [L361] COND FALSE !(ret <= 0) [L378] s__state = 8544 [L379] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND TRUE ! s__s3__tmp__reuse_message [L601] COND TRUE ! skip [L602] COND TRUE state == 8528 [L603] COND TRUE s__state == 8544 [L604] COND TRUE tmp___7 != 1024 [L605] COND TRUE tmp___7 != 512 [L606] COND TRUE __cil_tmp58 != 4294967294 [L607] COND TRUE l != 4294967266 [L642] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 161 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2670 SDtfs, 1939 SDslu, 2959 SDs, 0 SdLazy, 1406 SolverSat, 341 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=923occurred in iteration=12, 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, 12 MinimizatonAttempts, 341 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 950 NumberOfCodeBlocks, 950 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 831 ConstructedInterpolants, 0 QuantifiedInterpolants, 106011 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 421/425 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...