/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:22,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:22,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:22,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:22,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:22,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:22,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:22,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:22,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:22,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:22,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:22,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:22,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:22,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:22,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:22,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:22,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:22,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:22,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:22,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:22,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:22,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:22,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:22,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:22,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:22,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:22,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:22,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:22,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:22,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:22,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:22,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:22,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:22,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:22,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:22,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:22,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:22,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:22,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:22,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:22,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:22,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:00:22,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:22,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:22,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:22,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:22,297 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:22,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:22,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:22,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:22,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:22,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:22,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:22,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:22,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:22,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:22,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:22,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:22,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:22,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:22,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:22,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:22,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:22,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:22,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:22,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:22,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:22,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:22,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:22,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:22,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:22,304 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:22,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:22,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:22,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:22,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:22,768 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:22,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-24 16:00:22,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e915772e/08e269ca24f94148ab0f52991e87f8f6/FLAG52ab890da [2020-09-24 16:00:23,493 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:23,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-24 16:00:23,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e915772e/08e269ca24f94148ab0f52991e87f8f6/FLAG52ab890da [2020-09-24 16:00:23,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e915772e/08e269ca24f94148ab0f52991e87f8f6 [2020-09-24 16:00:23,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:23,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:23,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:23,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:23,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:23,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:23" (1/1) ... [2020-09-24 16:00:23,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d6d873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:23, skipping insertion in model container [2020-09-24 16:00:23,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:23" (1/1) ... [2020-09-24 16:00:23,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:23,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:24,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:24,163 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:24,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:24,348 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:24,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24 WrapperNode [2020-09-24 16:00:24,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:24,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:24,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:24,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:24,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... [2020-09-24 16:00:24,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... [2020-09-24 16:00:24,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... [2020-09-24 16:00:24,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... [2020-09-24 16:00:24,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... [2020-09-24 16:00:24,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... [2020-09-24 16:00:24,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... [2020-09-24 16:00:24,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:24,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:24,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:24,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:24,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:24,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:24,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:24,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 16:00:24,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 16:00:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 16:00:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 16:00:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:24,741 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 16:00:25,499 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 16:00:25,499 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 16:00:25,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:25,538 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:00:25,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:25 BoogieIcfgContainer [2020-09-24 16:00:25,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:25,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:25,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:25,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:25,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:23" (1/3) ... [2020-09-24 16:00:25,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a447f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:25, skipping insertion in model container [2020-09-24 16:00:25,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:24" (2/3) ... [2020-09-24 16:00:25,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a447f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:25, skipping insertion in model container [2020-09-24 16:00:25,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:25" (3/3) ... [2020-09-24 16:00:25,569 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-09-24 16:00:25,582 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:25,595 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:25,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:25,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:25,652 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:25,652 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:25,653 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:25,653 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:25,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:25,653 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:25,653 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-09-24 16:00:25,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 16:00:25,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:25,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:25,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash -51904500, now seen corresponding path program 1 times [2020-09-24 16:00:25,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:25,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086985459] [2020-09-24 16:00:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,991 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-24 16:00:25,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 16:00:25,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:00:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-24 16:00:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:00:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,346 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:26,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:26,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086985459] [2020-09-24 16:00:26,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:26,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:26,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573973014] [2020-09-24 16:00:26,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:26,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:26,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:26,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:26,447 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 6 states. [2020-09-24 16:00:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:27,061 INFO L93 Difference]: Finished difference Result 765 states and 1012 transitions. [2020-09-24 16:00:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:27,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-24 16:00:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:27,111 INFO L225 Difference]: With dead ends: 765 [2020-09-24 16:00:27,112 INFO L226 Difference]: Without dead ends: 438 [2020-09-24 16:00:27,125 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 [2020-09-24 16:00:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-09-24 16:00:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 425. [2020-09-24 16:00:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-09-24 16:00:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 503 transitions. [2020-09-24 16:00:27,259 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 503 transitions. Word has length 181 [2020-09-24 16:00:27,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:27,261 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 503 transitions. [2020-09-24 16:00:27,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2020-09-24 16:00:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 16:00:27,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:27,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:27,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:27,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:27,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:27,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1773900517, now seen corresponding path program 1 times [2020-09-24 16:00:27,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:27,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019710876] [2020-09-24 16:00:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,330 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,330 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,331 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,331 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 16:00:27,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:00:27,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 16:00:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:00:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,460 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,460 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,462 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:27,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:27,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:27,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019710876] [2020-09-24 16:00:27,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:27,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:27,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550686320] [2020-09-24 16:00:27,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:27,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:27,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:27,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:27,513 INFO L87 Difference]: Start difference. First operand 425 states and 503 transitions. Second operand 3 states. [2020-09-24 16:00:27,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:27,595 INFO L93 Difference]: Finished difference Result 977 states and 1204 transitions. [2020-09-24 16:00:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:27,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-09-24 16:00:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:27,603 INFO L225 Difference]: With dead ends: 977 [2020-09-24 16:00:27,604 INFO L226 Difference]: Without dead ends: 696 [2020-09-24 16:00:27,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-24 16:00:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-24 16:00:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-24 16:00:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 844 transitions. [2020-09-24 16:00:27,659 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 844 transitions. Word has length 203 [2020-09-24 16:00:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:27,661 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 844 transitions. [2020-09-24 16:00:27,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 844 transitions. [2020-09-24 16:00:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 16:00:27,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:27,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:27,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:27,670 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash -144089876, now seen corresponding path program 1 times [2020-09-24 16:00:27,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:27,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388111781] [2020-09-24 16:00:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,747 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,747 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 16:00:27,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:00:27,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 16:00:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 16:00:27,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,825 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,826 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:27,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:27,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:27,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 52 [2020-09-24 16:00:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:27,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388111781] [2020-09-24 16:00:27,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:27,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:27,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483073157] [2020-09-24 16:00:27,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:27,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:27,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:27,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:27,946 INFO L87 Difference]: Start difference. First operand 696 states and 844 transitions. Second operand 3 states. [2020-09-24 16:00:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:28,219 INFO L93 Difference]: Finished difference Result 1023 states and 1266 transitions. [2020-09-24 16:00:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:28,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-09-24 16:00:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:28,227 INFO L225 Difference]: With dead ends: 1023 [2020-09-24 16:00:28,228 INFO L226 Difference]: Without dead ends: 742 [2020-09-24 16:00:28,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-09-24 16:00:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 720. [2020-09-24 16:00:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-09-24 16:00:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 873 transitions. [2020-09-24 16:00:28,260 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 873 transitions. Word has length 204 [2020-09-24 16:00:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,261 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 873 transitions. [2020-09-24 16:00:28,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 873 transitions. [2020-09-24 16:00:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 16:00:28,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:28,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:28,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,271 INFO L82 PathProgramCache]: Analyzing trace with hash -764991549, now seen corresponding path program 1 times [2020-09-24 16:00:28,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553529113] [2020-09-24 16:00:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,330 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,330 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,330 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 16:00:28,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:28,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-24 16:00:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 16:00:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,409 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,409 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:28,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:28,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 16:00:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:28,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553529113] [2020-09-24 16:00:28,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:28,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:28,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202758424] [2020-09-24 16:00:28,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:28,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:28,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:28,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:28,514 INFO L87 Difference]: Start difference. First operand 720 states and 873 transitions. Second operand 3 states. [2020-09-24 16:00:28,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:28,557 INFO L93 Difference]: Finished difference Result 1867 states and 2315 transitions. [2020-09-24 16:00:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:28,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-24 16:00:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:28,566 INFO L225 Difference]: With dead ends: 1867 [2020-09-24 16:00:28,566 INFO L226 Difference]: Without dead ends: 1291 [2020-09-24 16:00:28,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-09-24 16:00:28,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2020-09-24 16:00:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2020-09-24 16:00:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1580 transitions. [2020-09-24 16:00:28,610 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1580 transitions. Word has length 211 [2020-09-24 16:00:28,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,611 INFO L479 AbstractCegarLoop]: Abstraction has 1289 states and 1580 transitions. [2020-09-24 16:00:28,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1580 transitions. [2020-09-24 16:00:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 16:00:28,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:28,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:28,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1086176952, now seen corresponding path program 1 times [2020-09-24 16:00:28,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935391585] [2020-09-24 16:00:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,660 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,660 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,661 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 16:00:28,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:28,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-24 16:00:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 16:00:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:28,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,720 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,720 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,720 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:28,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:28,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:28,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935391585] [2020-09-24 16:00:28,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:28,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:28,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543313082] [2020-09-24 16:00:28,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:28,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:28,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:28,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:28,757 INFO L87 Difference]: Start difference. First operand 1289 states and 1580 transitions. Second operand 3 states. [2020-09-24 16:00:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:28,840 INFO L93 Difference]: Finished difference Result 2483 states and 3077 transitions. [2020-09-24 16:00:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:28,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-24 16:00:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:28,852 INFO L225 Difference]: With dead ends: 2483 [2020-09-24 16:00:28,852 INFO L226 Difference]: Without dead ends: 1881 [2020-09-24 16:00:28,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-24 16:00:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1881. [2020-09-24 16:00:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-09-24 16:00:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2318 transitions. [2020-09-24 16:00:28,936 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2318 transitions. Word has length 211 [2020-09-24 16:00:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,937 INFO L479 AbstractCegarLoop]: Abstraction has 1881 states and 2318 transitions. [2020-09-24 16:00:28,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:28,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2318 transitions. [2020-09-24 16:00:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 16:00:28,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:28,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:28,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash 955931285, now seen corresponding path program 1 times [2020-09-24 16:00:28,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670177639] [2020-09-24 16:00:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,076 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,077 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,077 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,077 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 16:00:29,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:29,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-09-24 16:00:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:00:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,148 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:29,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:29,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:29,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670177639] [2020-09-24 16:00:29,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:29,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:29,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126731504] [2020-09-24 16:00:29,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:29,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:29,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:29,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:29,211 INFO L87 Difference]: Start difference. First operand 1881 states and 2318 transitions. Second operand 3 states. [2020-09-24 16:00:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:29,509 INFO L93 Difference]: Finished difference Result 3929 states and 5009 transitions. [2020-09-24 16:00:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:29,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-24 16:00:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:29,524 INFO L225 Difference]: With dead ends: 3929 [2020-09-24 16:00:29,525 INFO L226 Difference]: Without dead ends: 2198 [2020-09-24 16:00:29,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-09-24 16:00:29,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2142. [2020-09-24 16:00:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2020-09-24 16:00:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2603 transitions. [2020-09-24 16:00:29,611 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2603 transitions. Word has length 229 [2020-09-24 16:00:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:29,612 INFO L479 AbstractCegarLoop]: Abstraction has 2142 states and 2603 transitions. [2020-09-24 16:00:29,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2603 transitions. [2020-09-24 16:00:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 16:00:29,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:29,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:29,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:29,627 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:29,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1369562677, now seen corresponding path program 1 times [2020-09-24 16:00:29,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:29,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569643883] [2020-09-24 16:00:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,687 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,688 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,688 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 16:00:29,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:29,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-09-24 16:00:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:00:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,772 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,772 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,772 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:29,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:29,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569643883] [2020-09-24 16:00:29,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:29,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:29,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150364441] [2020-09-24 16:00:29,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:29,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:29,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:29,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:29,879 INFO L87 Difference]: Start difference. First operand 2142 states and 2603 transitions. Second operand 3 states. [2020-09-24 16:00:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,176 INFO L93 Difference]: Finished difference Result 4341 states and 5371 transitions. [2020-09-24 16:00:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-24 16:00:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,192 INFO L225 Difference]: With dead ends: 4341 [2020-09-24 16:00:30,192 INFO L226 Difference]: Without dead ends: 2349 [2020-09-24 16:00:30,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2020-09-24 16:00:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2295. [2020-09-24 16:00:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-09-24 16:00:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2780 transitions. [2020-09-24 16:00:30,313 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2780 transitions. Word has length 229 [2020-09-24 16:00:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,314 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 2780 transitions. [2020-09-24 16:00:30,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2780 transitions. [2020-09-24 16:00:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 16:00:30,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,330 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:30,331 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1436458987, now seen corresponding path program 1 times [2020-09-24 16:00:30,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974810207] [2020-09-24 16:00:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,385 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,385 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,386 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 16:00:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:30,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 16:00:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:00:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,458 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,458 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,459 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:30,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974810207] [2020-09-24 16:00:30,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:30,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894139419] [2020-09-24 16:00:30,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:30,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:30,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,546 INFO L87 Difference]: Start difference. First operand 2295 states and 2780 transitions. Second operand 3 states. [2020-09-24 16:00:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,693 INFO L93 Difference]: Finished difference Result 6366 states and 7725 transitions. [2020-09-24 16:00:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-09-24 16:00:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,727 INFO L225 Difference]: With dead ends: 6366 [2020-09-24 16:00:30,727 INFO L226 Difference]: Without dead ends: 4221 [2020-09-24 16:00:30,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2020-09-24 16:00:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 4219. [2020-09-24 16:00:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4219 states. [2020-09-24 16:00:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 5072 transitions. [2020-09-24 16:00:30,972 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 5072 transitions. Word has length 236 [2020-09-24 16:00:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,973 INFO L479 AbstractCegarLoop]: Abstraction has 4219 states and 5072 transitions. [2020-09-24 16:00:30,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 5072 transitions. [2020-09-24 16:00:30,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 16:00:30,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:30,995 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1625861187, now seen corresponding path program 1 times [2020-09-24 16:00:30,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059952598] [2020-09-24 16:00:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 16:00:31,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:31,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-24 16:00:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:00:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,125 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,126 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,126 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 16:00:31,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059952598] [2020-09-24 16:00:31,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341065870] [2020-09-24 16:00:31,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,203 INFO L87 Difference]: Start difference. First operand 4219 states and 5072 transitions. Second operand 3 states. [2020-09-24 16:00:31,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,336 INFO L93 Difference]: Finished difference Result 8366 states and 10078 transitions. [2020-09-24 16:00:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-24 16:00:31,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,360 INFO L225 Difference]: With dead ends: 8366 [2020-09-24 16:00:31,361 INFO L226 Difference]: Without dead ends: 4297 [2020-09-24 16:00:31,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2020-09-24 16:00:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4255. [2020-09-24 16:00:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-09-24 16:00:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5092 transitions. [2020-09-24 16:00:31,533 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5092 transitions. Word has length 237 [2020-09-24 16:00:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,534 INFO L479 AbstractCegarLoop]: Abstraction has 4255 states and 5092 transitions. [2020-09-24 16:00:31,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5092 transitions. [2020-09-24 16:00:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 16:00:31,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:00:31,551 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 346316741, now seen corresponding path program 1 times [2020-09-24 16:00:31,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152322293] [2020-09-24 16:00:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,591 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,591 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,591 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,592 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 16:00:31,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:31,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-09-24 16:00:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 16:00:31,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,664 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:31,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152322293] [2020-09-24 16:00:31,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:31,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456357444] [2020-09-24 16:00:31,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:31,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:31,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,751 INFO L87 Difference]: Start difference. First operand 4255 states and 5092 transitions. Second operand 3 states. [2020-09-24 16:00:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,924 INFO L93 Difference]: Finished difference Result 8455 states and 10149 transitions. [2020-09-24 16:00:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:31,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-24 16:00:31,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,957 INFO L225 Difference]: With dead ends: 8455 [2020-09-24 16:00:31,957 INFO L226 Difference]: Without dead ends: 5649 [2020-09-24 16:00:31,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2020-09-24 16:00:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5649. [2020-09-24 16:00:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5649 states. [2020-09-24 16:00:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 6768 transitions. [2020-09-24 16:00:32,168 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 6768 transitions. Word has length 240 [2020-09-24 16:00:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:32,168 INFO L479 AbstractCegarLoop]: Abstraction has 5649 states and 6768 transitions. [2020-09-24 16:00:32,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 6768 transitions. [2020-09-24 16:00:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 16:00:32,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:32,189 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:32,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:00:32,189 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:32,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:32,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1652979383, now seen corresponding path program 1 times [2020-09-24 16:00:32,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:32,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33314882] [2020-09-24 16:00:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:00:32,256 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:00:32,257 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:00:32,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:00:32,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:32 BoogieIcfgContainer [2020-09-24 16:00:32,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:32,324 INFO L168 Benchmark]: Toolchain (without parser) took 8531.98 ms. Allocated memory was 141.0 MB in the beginning and 466.1 MB in the end (delta: 325.1 MB). Free memory was 102.5 MB in the beginning and 276.4 MB in the end (delta: -173.9 MB). Peak memory consumption was 151.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,325 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:32,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.86 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 180.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,331 INFO L168 Benchmark]: Boogie Preprocessor took 78.93 ms. Allocated memory is still 205.5 MB. Free memory was 180.5 MB in the beginning and 178.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,332 INFO L168 Benchmark]: RCFGBuilder took 1124.11 ms. Allocated memory is still 205.5 MB. Free memory was 177.9 MB in the beginning and 109.5 MB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,333 INFO L168 Benchmark]: TraceAbstraction took 6764.28 ms. Allocated memory was 205.5 MB in the beginning and 466.1 MB in the end (delta: 260.6 MB). Free memory was 108.8 MB in the beginning and 276.4 MB in the end (delta: -167.6 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:32,347 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 553.86 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 180.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.93 ms. Allocated memory is still 205.5 MB. Free memory was 180.5 MB in the beginning and 178.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1124.11 ms. Allocated memory is still 205.5 MB. Free memory was 177.9 MB in the beginning and 109.5 MB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6764.28 ms. Allocated memory was 205.5 MB in the beginning and 466.1 MB in the end (delta: 260.6 MB). Free memory was 108.8 MB in the beginning and 276.4 MB in the end (delta: -167.6 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 607]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L612] int s ; [L613] int tmp ; [L617] s = 8464 [L618] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND FALSE !(tmp___1 + 12288) [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L296] COND TRUE \read(s__hit) [L297] s__state = 8656 [L301] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] COND FALSE !(! tmp___9) [L495] ret = __VERIFIER_nondet_int() [L496] COND TRUE blastFlag == 2 [L497] blastFlag = 3 [L499] COND FALSE !(ret <= 0) [L502] s__state = 8672 [L503] s__init_num = 0 [L504] COND FALSE !(! tmp___10) [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND FALSE !(s__state == 8656) [L194] COND FALSE !(s__state == 8657) [L197] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND TRUE blastFlag == 3 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 411 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4756 SDtfs, 2850 SDslu, 4079 SDs, 0 SdLazy, 631 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5649occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 191 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 2456 NumberOfCodeBlocks, 2456 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2171 ConstructedInterpolants, 0 QuantifiedInterpolants, 673622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 239/239 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...