/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:25:57,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:25:57,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:25:57,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:25:57,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:25:57,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:25:57,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:25:57,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:25:57,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:25:57,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:25:57,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:25:57,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:25:57,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:25:57,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:25:57,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:25:57,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:25:57,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:25:57,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:25:57,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:25:57,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:25:57,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:25:57,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:25:57,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:25:57,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:25:58,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:25:58,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:25:58,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:25:58,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:25:58,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:25:58,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:25:58,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:25:58,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:25:58,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:25:58,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:25:58,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:25:58,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:25:58,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:25:58,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:25:58,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:25:58,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:25:58,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:25:58,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:25:58,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:25:58,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:25:58,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:25:58,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:25:58,075 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:25:58,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:25:58,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:25:58,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:25:58,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:25:58,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:25:58,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:25:58,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:25:58,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:25:58,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:25:58,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:25:58,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:25:58,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:25:58,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:25:58,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:25:58,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:25:58,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:25:58,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:25:58,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:25:58,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:25:58,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:25:58,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:25:58,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:25:58,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:25:58,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:25:58,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:25:58,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:25:58,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:25:58,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:25:58,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:25:58,558 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:25:58,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 13:25:58,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07e2581dc/7257ad23aa224f46bc374cc0c2d1db77/FLAG5ba479b3f [2020-09-25 13:25:59,262 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:25:59,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 13:25:59,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07e2581dc/7257ad23aa224f46bc374cc0c2d1db77/FLAG5ba479b3f [2020-09-25 13:25:59,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07e2581dc/7257ad23aa224f46bc374cc0c2d1db77 [2020-09-25 13:25:59,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:25:59,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:25:59,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:25:59,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:25:59,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:25:59,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:25:59" (1/1) ... [2020-09-25 13:25:59,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:59, skipping insertion in model container [2020-09-25 13:25:59,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:25:59" (1/1) ... [2020-09-25 13:25:59,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:25:59,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:25:59,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:25:59,991 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:26:00,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:00,168 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:26:00,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00 WrapperNode [2020-09-25 13:26:00,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:00,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:26:00,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:26:00,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:26:00,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... [2020-09-25 13:26:00,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... [2020-09-25 13:26:00,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... [2020-09-25 13:26:00,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... [2020-09-25 13:26:00,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... [2020-09-25 13:26:00,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... [2020-09-25 13:26:00,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... [2020-09-25 13:26:00,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:26:00,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:26:00,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:26:00,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:26:00,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:26:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:26:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 13:26:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:26:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:26:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 13:26:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:26:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 13:26:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 13:26:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:26:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:26:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:26:00,570 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 13:26:01,268 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 13:26:01,268 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 13:26:01,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:26:01,290 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:26:01,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:01 BoogieIcfgContainer [2020-09-25 13:26:01,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:26:01,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:26:01,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:26:01,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:26:01,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:25:59" (1/3) ... [2020-09-25 13:26:01,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b9af09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:01, skipping insertion in model container [2020-09-25 13:26:01,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:00" (2/3) ... [2020-09-25 13:26:01,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b9af09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:01, skipping insertion in model container [2020-09-25 13:26:01,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:01" (3/3) ... [2020-09-25 13:26:01,320 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-25 13:26:01,333 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:26:01,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:26:01,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:26:01,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:26:01,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:26:01,439 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:26:01,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:26:01,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:26:01,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:26:01,440 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:26:01,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:26:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-09-25 13:26:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 13:26:01,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:01,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:01,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:01,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-09-25 13:26:01,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:01,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206187694] [2020-09-25 13:26:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:01,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 13:26:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-09-25 13:26:03,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:26:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:26:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 13:26:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:26:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:03,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:03,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:03,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:03,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206187694] [2020-09-25 13:26:03,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:03,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:26:03,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116103701] [2020-09-25 13:26:03,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:26:03,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:03,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:26:03,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:26:03,585 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 6 states. [2020-09-25 13:26:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:03,935 INFO L93 Difference]: Finished difference Result 782 states and 1019 transitions. [2020-09-25 13:26:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:26:03,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 13:26:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:03,959 INFO L225 Difference]: With dead ends: 782 [2020-09-25 13:26:03,960 INFO L226 Difference]: Without dead ends: 441 [2020-09-25 13:26:03,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:26:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-09-25 13:26:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 430. [2020-09-25 13:26:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-09-25 13:26:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 515 transitions. [2020-09-25 13:26:04,054 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 515 transitions. Word has length 160 [2020-09-25 13:26:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:04,058 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 515 transitions. [2020-09-25 13:26:04,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:26:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 515 transitions. [2020-09-25 13:26:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 13:26:04,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:04,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:04,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:26:04,064 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash -466072829, now seen corresponding path program 1 times [2020-09-25 13:26:04,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:04,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081705109] [2020-09-25 13:26:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:05,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:05,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 13:26:05,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:05,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-09-25 13:26:05,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:05,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:26:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:26:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-25 13:26:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:05,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:05,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:05,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:05,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:05,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:05,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081705109] [2020-09-25 13:26:05,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:05,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:26:05,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34947632] [2020-09-25 13:26:05,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:26:05,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:05,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:26:05,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:26:05,938 INFO L87 Difference]: Start difference. First operand 430 states and 515 transitions. Second operand 7 states. [2020-09-25 13:26:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:06,373 INFO L93 Difference]: Finished difference Result 876 states and 1103 transitions. [2020-09-25 13:26:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:26:06,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-25 13:26:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:06,381 INFO L225 Difference]: With dead ends: 876 [2020-09-25 13:26:06,381 INFO L226 Difference]: Without dead ends: 574 [2020-09-25 13:26:06,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:26:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-09-25 13:26:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 539. [2020-09-25 13:26:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 13:26:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 13:26:06,448 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 169 [2020-09-25 13:26:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:06,449 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 13:26:06,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:26:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 13:26:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 13:26:06,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:06,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:06,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:26:06,457 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:06,457 INFO L82 PathProgramCache]: Analyzing trace with hash -139011456, now seen corresponding path program 1 times [2020-09-25 13:26:06,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:06,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447865925] [2020-09-25 13:26:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:08,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:08,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 13:26:08,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:26:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2054 [2020-09-25 13:26:08,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:08,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-25 13:26:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:26:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:08,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:08,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:08,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:08,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:08,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:08,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:26:08,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447865925] [2020-09-25 13:26:08,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:08,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:08,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214944462] [2020-09-25 13:26:08,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:08,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:08,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:08,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:08,629 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 3 states. [2020-09-25 13:26:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:08,699 INFO L93 Difference]: Finished difference Result 954 states and 1163 transitions. [2020-09-25 13:26:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:08,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-09-25 13:26:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:08,705 INFO L225 Difference]: With dead ends: 954 [2020-09-25 13:26:08,706 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 13:26:08,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 13:26:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-09-25 13:26:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-09-25 13:26:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 661 transitions. [2020-09-25 13:26:08,733 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 661 transitions. Word has length 191 [2020-09-25 13:26:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:08,734 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 661 transitions. [2020-09-25 13:26:08,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 661 transitions. [2020-09-25 13:26:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 13:26:08,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:08,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:08,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:26:08,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:08,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1120886307, now seen corresponding path program 1 times [2020-09-25 13:26:08,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:08,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765243012] [2020-09-25 13:26:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:09,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 13:26:09,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:26:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-09-25 13:26:09,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:09,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 13:26:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:26:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:09,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:09,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:09,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:09,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:09,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:09,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765243012] [2020-09-25 13:26:09,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:09,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:09,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560872333] [2020-09-25 13:26:09,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:09,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:09,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:09,940 INFO L87 Difference]: Start difference. First operand 555 states and 661 transitions. Second operand 3 states. [2020-09-25 13:26:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:10,197 INFO L93 Difference]: Finished difference Result 1056 states and 1314 transitions. [2020-09-25 13:26:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:10,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-25 13:26:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:10,203 INFO L225 Difference]: With dead ends: 1056 [2020-09-25 13:26:10,203 INFO L226 Difference]: Without dead ends: 645 [2020-09-25 13:26:10,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-09-25 13:26:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 606. [2020-09-25 13:26:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-09-25 13:26:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 731 transitions. [2020-09-25 13:26:10,225 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 731 transitions. Word has length 192 [2020-09-25 13:26:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:10,225 INFO L479 AbstractCegarLoop]: Abstraction has 606 states and 731 transitions. [2020-09-25 13:26:10,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 731 transitions. [2020-09-25 13:26:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 13:26:10,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:10,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:10,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:26:10,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:10,230 INFO L82 PathProgramCache]: Analyzing trace with hash -312164926, now seen corresponding path program 1 times [2020-09-25 13:26:10,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:10,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867731328] [2020-09-25 13:26:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 13:26:11,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-09-25 13:26:11,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 13:26:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:26:11,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:11,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:11,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:11,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:11,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867731328] [2020-09-25 13:26:11,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:11,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:11,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957204421] [2020-09-25 13:26:11,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:11,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:11,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:11,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:11,086 INFO L87 Difference]: Start difference. First operand 606 states and 731 transitions. Second operand 3 states. [2020-09-25 13:26:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:11,193 INFO L93 Difference]: Finished difference Result 1492 states and 1858 transitions. [2020-09-25 13:26:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:11,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-09-25 13:26:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:11,201 INFO L225 Difference]: With dead ends: 1492 [2020-09-25 13:26:11,202 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 13:26:11,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 13:26:11,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2020-09-25 13:26:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-25 13:26:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1275 transitions. [2020-09-25 13:26:11,249 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1275 transitions. Word has length 197 [2020-09-25 13:26:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:11,250 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1275 transitions. [2020-09-25 13:26:11,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1275 transitions. [2020-09-25 13:26:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 13:26:11,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:11,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:11,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:26:11,258 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:11,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1190618208, now seen corresponding path program 1 times [2020-09-25 13:26:11,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:11,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339675214] [2020-09-25 13:26:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 13:26:11,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-25 13:26:11,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 13:26:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:26:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:11,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:11,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:11,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339675214] [2020-09-25 13:26:11,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:26:11,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 13:26:11,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607249132] [2020-09-25 13:26:11,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:11,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:11,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:11,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:11,943 INFO L87 Difference]: Start difference. First operand 1040 states and 1275 transitions. Second operand 4 states. [2020-09-25 13:26:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:12,239 INFO L93 Difference]: Finished difference Result 2279 states and 2876 transitions. [2020-09-25 13:26:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:12,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-09-25 13:26:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:12,247 INFO L225 Difference]: With dead ends: 2279 [2020-09-25 13:26:12,247 INFO L226 Difference]: Without dead ends: 1371 [2020-09-25 13:26:12,249 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 [2020-09-25 13:26:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-09-25 13:26:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1151. [2020-09-25 13:26:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-09-25 13:26:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1407 transitions. [2020-09-25 13:26:12,286 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1407 transitions. Word has length 198 [2020-09-25 13:26:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:12,287 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1407 transitions. [2020-09-25 13:26:12,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1407 transitions. [2020-09-25 13:26:12,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 13:26:12,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:12,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:12,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:26:12,292 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:12,292 INFO L82 PathProgramCache]: Analyzing trace with hash 27680960, now seen corresponding path program 1 times [2020-09-25 13:26:12,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:12,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771639428] [2020-09-25 13:26:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 13:26:13,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-09-25 13:26:13,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 13:26:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:26:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:13,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:13,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:13,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:13,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:13,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771639428] [2020-09-25 13:26:13,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:13,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:13,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215832799] [2020-09-25 13:26:13,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:13,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:13,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:13,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:13,290 INFO L87 Difference]: Start difference. First operand 1151 states and 1407 transitions. Second operand 4 states. [2020-09-25 13:26:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:13,597 INFO L93 Difference]: Finished difference Result 2248 states and 2789 transitions. [2020-09-25 13:26:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:13,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2020-09-25 13:26:13,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:13,604 INFO L225 Difference]: With dead ends: 2248 [2020-09-25 13:26:13,605 INFO L226 Difference]: Without dead ends: 1253 [2020-09-25 13:26:13,608 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 [2020-09-25 13:26:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-09-25 13:26:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1179. [2020-09-25 13:26:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-09-25 13:26:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1440 transitions. [2020-09-25 13:26:13,666 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1440 transitions. Word has length 206 [2020-09-25 13:26:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:13,667 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1440 transitions. [2020-09-25 13:26:13,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1440 transitions. [2020-09-25 13:26:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 13:26:13,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:13,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:13,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:26:13,676 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:13,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:13,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1819469783, now seen corresponding path program 1 times [2020-09-25 13:26:13,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:13,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061314141] [2020-09-25 13:26:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:14,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 13:26:14,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1238 [2020-09-25 13:26:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:14,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 13:26:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:26:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:15,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:15,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:15,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:15,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061314141] [2020-09-25 13:26:15,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:15,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:15,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243817186] [2020-09-25 13:26:15,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:15,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:15,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:15,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:15,070 INFO L87 Difference]: Start difference. First operand 1179 states and 1440 transitions. Second operand 4 states. [2020-09-25 13:26:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:15,366 INFO L93 Difference]: Finished difference Result 2263 states and 2799 transitions. [2020-09-25 13:26:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:15,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-09-25 13:26:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:15,373 INFO L225 Difference]: With dead ends: 2263 [2020-09-25 13:26:15,373 INFO L226 Difference]: Without dead ends: 1240 [2020-09-25 13:26:15,377 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 [2020-09-25 13:26:15,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-09-25 13:26:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1208. [2020-09-25 13:26:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-09-25 13:26:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1474 transitions. [2020-09-25 13:26:15,426 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1474 transitions. Word has length 207 [2020-09-25 13:26:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:15,426 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1474 transitions. [2020-09-25 13:26:15,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1474 transitions. [2020-09-25 13:26:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 13:26:15,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:15,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:15,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:26:15,433 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:15,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:15,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1252882748, now seen corresponding path program 1 times [2020-09-25 13:26:15,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:15,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408868760] [2020-09-25 13:26:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:15,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:17,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 13:26:17,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:26:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-09-25 13:26:17,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:17,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 13:26:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:26:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:17,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:17,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:17,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:17,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:17,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:17,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408868760] [2020-09-25 13:26:17,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:17,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:17,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21017187] [2020-09-25 13:26:17,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:17,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:17,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:17,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:17,319 INFO L87 Difference]: Start difference. First operand 1208 states and 1474 transitions. Second operand 4 states. [2020-09-25 13:26:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:17,558 INFO L93 Difference]: Finished difference Result 2511 states and 3101 transitions. [2020-09-25 13:26:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:17,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-09-25 13:26:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:17,566 INFO L225 Difference]: With dead ends: 2511 [2020-09-25 13:26:17,566 INFO L226 Difference]: Without dead ends: 1459 [2020-09-25 13:26:17,569 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 [2020-09-25 13:26:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-09-25 13:26:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1180. [2020-09-25 13:26:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-09-25 13:26:17,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1448 transitions. [2020-09-25 13:26:17,633 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1448 transitions. Word has length 207 [2020-09-25 13:26:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:17,634 INFO L479 AbstractCegarLoop]: Abstraction has 1180 states and 1448 transitions. [2020-09-25 13:26:17,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1448 transitions. [2020-09-25 13:26:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 13:26:17,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:17,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:17,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:26:17,640 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1752930940, now seen corresponding path program 1 times [2020-09-25 13:26:17,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:17,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635311011] [2020-09-25 13:26:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:19,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 13:26:19,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:26:19,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-09-25 13:26:19,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:19,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 13:26:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:26:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:19,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:19,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:19,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:19,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:19,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635311011] [2020-09-25 13:26:19,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:19,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:19,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603513633] [2020-09-25 13:26:19,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:19,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:19,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:19,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:19,305 INFO L87 Difference]: Start difference. First operand 1180 states and 1448 transitions. Second operand 4 states. [2020-09-25 13:26:19,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:19,571 INFO L93 Difference]: Finished difference Result 2455 states and 3071 transitions. [2020-09-25 13:26:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:19,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-09-25 13:26:19,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:19,579 INFO L225 Difference]: With dead ends: 2455 [2020-09-25 13:26:19,579 INFO L226 Difference]: Without dead ends: 1431 [2020-09-25 13:26:19,582 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 [2020-09-25 13:26:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-09-25 13:26:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1226. [2020-09-25 13:26:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 13:26:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1526 transitions. [2020-09-25 13:26:19,623 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1526 transitions. Word has length 207 [2020-09-25 13:26:19,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:19,624 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1526 transitions. [2020-09-25 13:26:19,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1526 transitions. [2020-09-25 13:26:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 13:26:19,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:19,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:19,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:26:19,629 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash -608677172, now seen corresponding path program 1 times [2020-09-25 13:26:19,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:19,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84992227] [2020-09-25 13:26:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 13:26:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:26:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3947 [2020-09-25 13:26:23,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:23,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:26:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 13:26:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:26:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:23,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:23,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:23,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:23,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:23,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:23,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84992227] [2020-09-25 13:26:23,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:23,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:23,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986145164] [2020-09-25 13:26:23,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:23,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:23,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:23,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:23,694 INFO L87 Difference]: Start difference. First operand 1226 states and 1526 transitions. Second operand 4 states. [2020-09-25 13:26:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:24,079 INFO L93 Difference]: Finished difference Result 2636 states and 3360 transitions. [2020-09-25 13:26:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:24,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-09-25 13:26:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:24,090 INFO L225 Difference]: With dead ends: 2636 [2020-09-25 13:26:24,090 INFO L226 Difference]: Without dead ends: 1506 [2020-09-25 13:26:24,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-09-25 13:26:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 804. [2020-09-25 13:26:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-09-25 13:26:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 982 transitions. [2020-09-25 13:26:24,132 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 982 transitions. Word has length 214 [2020-09-25 13:26:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,133 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 982 transitions. [2020-09-25 13:26:24,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 982 transitions. [2020-09-25 13:26:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 13:26:24,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:24,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:26:24,137 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1995787975, now seen corresponding path program 1 times [2020-09-25 13:26:24,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420309905] [2020-09-25 13:26:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 13:26:24,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 13:26:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 13:26:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:26:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:24,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:24,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:26:24,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420309905] [2020-09-25 13:26:24,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:24,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:24,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180666098] [2020-09-25 13:26:24,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:24,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,562 INFO L87 Difference]: Start difference. First operand 804 states and 982 transitions. Second operand 3 states. [2020-09-25 13:26:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:24,833 INFO L93 Difference]: Finished difference Result 1584 states and 1999 transitions. [2020-09-25 13:26:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:24,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-25 13:26:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:24,840 INFO L225 Difference]: With dead ends: 1584 [2020-09-25 13:26:24,840 INFO L226 Difference]: Without dead ends: 905 [2020-09-25 13:26:24,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-09-25 13:26:24,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 863. [2020-09-25 13:26:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-09-25 13:26:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1053 transitions. [2020-09-25 13:26:24,882 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1053 transitions. Word has length 224 [2020-09-25 13:26:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,883 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1053 transitions. [2020-09-25 13:26:24,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1053 transitions. [2020-09-25 13:26:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 13:26:24,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:24,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:26:24,888 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash 573547111, now seen corresponding path program 1 times [2020-09-25 13:26:24,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539576646] [2020-09-25 13:26:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 13:26:25,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-25 13:26:25,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 13:26:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:26:25,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:25,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:25,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:25,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:25,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:26:25,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539576646] [2020-09-25 13:26:25,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:25,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:25,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687528549] [2020-09-25 13:26:25,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:25,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:25,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:25,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,391 INFO L87 Difference]: Start difference. First operand 863 states and 1053 transitions. Second operand 3 states. [2020-09-25 13:26:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:25,491 INFO L93 Difference]: Finished difference Result 2210 states and 2763 transitions. [2020-09-25 13:26:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:25,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-25 13:26:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:25,501 INFO L225 Difference]: With dead ends: 2210 [2020-09-25 13:26:25,501 INFO L226 Difference]: Without dead ends: 1503 [2020-09-25 13:26:25,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-09-25 13:26:25,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1501. [2020-09-25 13:26:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2020-09-25 13:26:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1862 transitions. [2020-09-25 13:26:25,560 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1862 transitions. Word has length 224 [2020-09-25 13:26:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:25,560 INFO L479 AbstractCegarLoop]: Abstraction has 1501 states and 1862 transitions. [2020-09-25 13:26:25,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1862 transitions. [2020-09-25 13:26:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 13:26:25,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:25,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:25,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:26:25,566 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:25,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1467097396, now seen corresponding path program 1 times [2020-09-25 13:26:25,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:25,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021909801] [2020-09-25 13:26:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 13:26:27,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:26:27,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-09-25 13:26:27,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 13:26:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 13:26:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:27,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:27,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:26:27,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021909801] [2020-09-25 13:26:27,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:26:27,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 13:26:27,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556954674] [2020-09-25 13:26:27,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:27,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:27,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:27,312 INFO L87 Difference]: Start difference. First operand 1501 states and 1862 transitions. Second operand 4 states. [2020-09-25 13:26:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:27,617 INFO L93 Difference]: Finished difference Result 3488 states and 4407 transitions. [2020-09-25 13:26:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:27,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 234 [2020-09-25 13:26:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:27,627 INFO L225 Difference]: With dead ends: 3488 [2020-09-25 13:26:27,628 INFO L226 Difference]: Without dead ends: 2119 [2020-09-25 13:26:27,632 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 [2020-09-25 13:26:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-09-25 13:26:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1616. [2020-09-25 13:26:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2020-09-25 13:26:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2015 transitions. [2020-09-25 13:26:27,694 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2015 transitions. Word has length 234 [2020-09-25 13:26:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:27,695 INFO L479 AbstractCegarLoop]: Abstraction has 1616 states and 2015 transitions. [2020-09-25 13:26:27,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2015 transitions. [2020-09-25 13:26:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 13:26:27,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:27,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:27,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:26:27,701 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash -754403252, now seen corresponding path program 1 times [2020-09-25 13:26:27,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:27,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192648278] [2020-09-25 13:26:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:30,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 13:26:30,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:26:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2969 [2020-09-25 13:26:30,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:30,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:30,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:26:30,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 13:26:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:26:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:30,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:26:30,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192648278] [2020-09-25 13:26:30,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:30,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:30,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401542631] [2020-09-25 13:26:30,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:30,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:30,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:30,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:30,791 INFO L87 Difference]: Start difference. First operand 1616 states and 2015 transitions. Second operand 4 states. [2020-09-25 13:26:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:31,298 INFO L93 Difference]: Finished difference Result 4834 states and 6127 transitions. [2020-09-25 13:26:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:31,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-09-25 13:26:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:31,314 INFO L225 Difference]: With dead ends: 4834 [2020-09-25 13:26:31,314 INFO L226 Difference]: Without dead ends: 3374 [2020-09-25 13:26:31,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2020-09-25 13:26:31,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 1716. [2020-09-25 13:26:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2020-09-25 13:26:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2125 transitions. [2020-09-25 13:26:31,409 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2125 transitions. Word has length 242 [2020-09-25 13:26:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:31,409 INFO L479 AbstractCegarLoop]: Abstraction has 1716 states and 2125 transitions. [2020-09-25 13:26:31,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2125 transitions. [2020-09-25 13:26:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 13:26:31,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:31,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:31,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:26:31,415 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:31,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:31,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1410243604, now seen corresponding path program 1 times [2020-09-25 13:26:31,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:31,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11728185] [2020-09-25 13:26:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:31,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:32,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:34,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:34,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 13:26:34,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:26:34,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3034 [2020-09-25 13:26:34,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:34,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:26:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 13:26:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:26:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:34,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:34,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:34,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:34,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:34,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:34,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:34,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:26:34,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11728185] [2020-09-25 13:26:34,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:34,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:34,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356121792] [2020-09-25 13:26:34,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:34,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:34,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:34,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:34,559 INFO L87 Difference]: Start difference. First operand 1716 states and 2125 transitions. Second operand 4 states. [2020-09-25 13:26:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:35,042 INFO L93 Difference]: Finished difference Result 5270 states and 6663 transitions. [2020-09-25 13:26:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:35,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-09-25 13:26:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:35,059 INFO L225 Difference]: With dead ends: 5270 [2020-09-25 13:26:35,059 INFO L226 Difference]: Without dead ends: 3686 [2020-09-25 13:26:35,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2020-09-25 13:26:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 1776. [2020-09-25 13:26:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-09-25 13:26:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2211 transitions. [2020-09-25 13:26:35,139 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2211 transitions. Word has length 242 [2020-09-25 13:26:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:35,139 INFO L479 AbstractCegarLoop]: Abstraction has 1776 states and 2211 transitions. [2020-09-25 13:26:35,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2211 transitions. [2020-09-25 13:26:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 13:26:35,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:35,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:35,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:26:35,147 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:35,148 INFO L82 PathProgramCache]: Analyzing trace with hash -296998075, now seen corresponding path program 1 times [2020-09-25 13:26:35,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:35,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699143331] [2020-09-25 13:26:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:35,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 13:26:35,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 13:26:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:35,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-09-25 13:26:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:26:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:35,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:35,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:35,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:35,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:35,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:35,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 13:26:35,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699143331] [2020-09-25 13:26:35,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:35,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:35,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647420936] [2020-09-25 13:26:35,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:35,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:35,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:35,636 INFO L87 Difference]: Start difference. First operand 1776 states and 2211 transitions. Second operand 3 states. [2020-09-25 13:26:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:35,759 INFO L93 Difference]: Finished difference Result 4173 states and 5253 transitions. [2020-09-25 13:26:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:35,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-09-25 13:26:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:35,774 INFO L225 Difference]: With dead ends: 4173 [2020-09-25 13:26:35,774 INFO L226 Difference]: Without dead ends: 2553 [2020-09-25 13:26:35,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-09-25 13:26:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2551. [2020-09-25 13:26:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2551 states. [2020-09-25 13:26:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 3199 transitions. [2020-09-25 13:26:35,857 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 3199 transitions. Word has length 258 [2020-09-25 13:26:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:35,858 INFO L479 AbstractCegarLoop]: Abstraction has 2551 states and 3199 transitions. [2020-09-25 13:26:35,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 3199 transitions. [2020-09-25 13:26:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 13:26:35,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:35,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:35,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:26:35,866 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:35,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:35,866 INFO L82 PathProgramCache]: Analyzing trace with hash 512679513, now seen corresponding path program 1 times [2020-09-25 13:26:35,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:35,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487048393] [2020-09-25 13:26:35,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-09-25 13:26:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:26:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 13:26:36,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487048393] [2020-09-25 13:26:36,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:36,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:36,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163232] [2020-09-25 13:26:36,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:36,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:36,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:36,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:36,295 INFO L87 Difference]: Start difference. First operand 2551 states and 3199 transitions. Second operand 3 states. [2020-09-25 13:26:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:36,588 INFO L93 Difference]: Finished difference Result 5489 states and 7024 transitions. [2020-09-25 13:26:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:36,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2020-09-25 13:26:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:36,602 INFO L225 Difference]: With dead ends: 5489 [2020-09-25 13:26:36,603 INFO L226 Difference]: Without dead ends: 3058 [2020-09-25 13:26:36,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-09-25 13:26:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2737. [2020-09-25 13:26:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2737 states. [2020-09-25 13:26:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3487 transitions. [2020-09-25 13:26:36,688 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3487 transitions. Word has length 261 [2020-09-25 13:26:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:36,689 INFO L479 AbstractCegarLoop]: Abstraction has 2737 states and 3487 transitions. [2020-09-25 13:26:36,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3487 transitions. [2020-09-25 13:26:36,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 13:26:36,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:36,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:36,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 13:26:36,695 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:36,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:36,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1637140168, now seen corresponding path program 1 times [2020-09-25 13:26:36,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:36,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543437501] [2020-09-25 13:26:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:37,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:37,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 13:26:37,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-09-25 13:26:37,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:37,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-09-25 13:26:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:26:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:37,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:37,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:37,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:37,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:37,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-25 13:26:37,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543437501] [2020-09-25 13:26:37,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:37,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:37,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930034889] [2020-09-25 13:26:37,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:37,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:37,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:37,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:37,597 INFO L87 Difference]: Start difference. First operand 2737 states and 3487 transitions. Second operand 3 states. [2020-09-25 13:26:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:37,786 INFO L93 Difference]: Finished difference Result 7743 states and 9937 transitions. [2020-09-25 13:26:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:37,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-09-25 13:26:37,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:37,809 INFO L225 Difference]: With dead ends: 7743 [2020-09-25 13:26:37,809 INFO L226 Difference]: Without dead ends: 5162 [2020-09-25 13:26:37,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2020-09-25 13:26:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 2786. [2020-09-25 13:26:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-09-25 13:26:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3553 transitions. [2020-09-25 13:26:37,947 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3553 transitions. Word has length 263 [2020-09-25 13:26:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:37,947 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3553 transitions. [2020-09-25 13:26:37,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3553 transitions. [2020-09-25 13:26:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-25 13:26:37,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:37,953 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:37,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 13:26:37,954 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash -196875119, now seen corresponding path program 1 times [2020-09-25 13:26:37,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:37,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650006562] [2020-09-25 13:26:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:26:37,993 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:26:37,994 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:26:38,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 13:26:38,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:26:38 BoogieIcfgContainer [2020-09-25 13:26:38,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:26:38,065 INFO L168 Benchmark]: Toolchain (without parser) took 38470.03 ms. Allocated memory was 140.5 MB in the beginning and 667.4 MB in the end (delta: 526.9 MB). Free memory was 101.1 MB in the beginning and 190.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 437.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:38,070 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:26:38,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.63 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 179.0 MB in the end (delta: -78.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:38,074 INFO L168 Benchmark]: Boogie Preprocessor took 67.84 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 176.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:38,074 INFO L168 Benchmark]: RCFGBuilder took 1068.02 ms. Allocated memory is still 203.9 MB. Free memory was 176.1 MB in the beginning and 103.6 MB in the end (delta: 72.5 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:38,075 INFO L168 Benchmark]: TraceAbstraction took 36752.83 ms. Allocated memory was 203.9 MB in the beginning and 667.4 MB in the end (delta: 463.5 MB). Free memory was 103.0 MB in the beginning and 190.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 375.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:38,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 572.63 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 179.0 MB in the end (delta: -78.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.84 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 176.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1068.02 ms. Allocated memory is still 203.9 MB. Free memory was 176.1 MB in the beginning and 103.6 MB in the end (delta: 72.5 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36752.83 ms. Allocated memory was 203.9 MB in the beginning and 667.4 MB in the end (delta: 463.5 MB). Free memory was 103.0 MB in the beginning and 190.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 375.9 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, 440 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.5s, OverallIterations: 20, TraceHistogramMax: 4, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10397 SDtfs, 7280 SDslu, 12668 SDs, 0 SdLazy, 2781 SolverSat, 481 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2786occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 19 MinimizatonAttempts, 8413 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 27.6s InterpolantComputationTime, 4361 NumberOfCodeBlocks, 4361 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 4077 ConstructedInterpolants, 0 QuantifiedInterpolants, 1252213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 642/650 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...