/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:27:56,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:27:56,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:27:56,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:27:56,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:27:56,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:27:56,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:27:56,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:27:56,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:27:56,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:27:56,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:27:56,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:27:56,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:27:56,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:27:56,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:27:56,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:27:56,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:27:56,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:27:56,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:27:56,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:27:56,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:27:56,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:27:56,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:27:56,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:27:56,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:27:56,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:27:56,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:27:56,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:27:56,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:27:56,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:27:56,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:27:56,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:27:56,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:27:56,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:27:56,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:27:56,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:27:56,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:27:56,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:27:56,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:27:56,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:27:56,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:27:56,394 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 20:27:56,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:27:56,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:27:56,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:27:56,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:27:56,434 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:27:56,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:27:56,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:27:56,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:27:56,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:27:56,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:27:56,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:27:56,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:27:56,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:27:56,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:27:56,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:27:56,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:27:56,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:27:56,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:27:56,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:27:56,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:27:56,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:27:56,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:27:56,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:27:56,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:27:56,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:27:56,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:27:56,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:27:56,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:27:56,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:27:56,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:27:56,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:27:56,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:27:56,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:27:56,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:27:56,961 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:27:56,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-24 20:27:57,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b2be612/b1af6f10a4fc470096a27b871f5f8586/FLAGfb00053bb [2020-09-24 20:27:57,652 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:27:57,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-24 20:27:57,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b2be612/b1af6f10a4fc470096a27b871f5f8586/FLAGfb00053bb [2020-09-24 20:27:57,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b2be612/b1af6f10a4fc470096a27b871f5f8586 [2020-09-24 20:27:57,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:27:57,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:27:57,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:27:57,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:27:57,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:27:57,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:27:57" (1/1) ... [2020-09-24 20:27:57,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:57, skipping insertion in model container [2020-09-24 20:27:57,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:27:57" (1/1) ... [2020-09-24 20:27:57,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:27:58,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:27:58,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:27:58,394 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:27:58,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:27:58,582 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:27:58,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58 WrapperNode [2020-09-24 20:27:58,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:27:58,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:27:58,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:27:58,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:27:58,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (1/1) ... [2020-09-24 20:27:58,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (1/1) ... [2020-09-24 20:27:58,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (1/1) ... [2020-09-24 20:27:58,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (1/1) ... [2020-09-24 20:27:58,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (1/1) ... [2020-09-24 20:27:58,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (1/1) ... [2020-09-24 20:27:58,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (1/1) ... [2020-09-24 20:27:58,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:27:58,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:27:58,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:27:58,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:27:58,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (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 20:27:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:27:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:27:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 20:27:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:27:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:27:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:27:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:27:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 20:27:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 20:27:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:27:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:27:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:27:59,006 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 20:27:59,700 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 20:27:59,701 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 20:27:59,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:27:59,720 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:27:59,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:27:59 BoogieIcfgContainer [2020-09-24 20:27:59,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:27:59,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:27:59,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:27:59,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:27:59,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:27:57" (1/3) ... [2020-09-24 20:27:59,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c572b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:27:59, skipping insertion in model container [2020-09-24 20:27:59,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:58" (2/3) ... [2020-09-24 20:27:59,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c572b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:27:59, skipping insertion in model container [2020-09-24 20:27:59,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:27:59" (3/3) ... [2020-09-24 20:27:59,739 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-24 20:27:59,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:27:59,764 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:27:59,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:27:59,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:27:59,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:27:59,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:27:59,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:27:59,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:27:59,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:27:59,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:27:59,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:27:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-09-24 20:27:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 20:27:59,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:59,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:59,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:59,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-09-24 20:27:59,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:59,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351496808] [2020-09-24 20:27:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:01,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:01,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 20:28:01,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-09-24 20:28:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:28:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 20:28:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-24 20:28:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:28:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:01,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:01,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:01,923 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 20:28:01,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351496808] [2020-09-24 20:28:01,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:01,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:28:01,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341625000] [2020-09-24 20:28:01,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:28:01,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:01,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:28:01,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:28:01,956 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 7 states. [2020-09-24 20:28:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:02,505 INFO L93 Difference]: Finished difference Result 828 states and 1080 transitions. [2020-09-24 20:28:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:28:02,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-24 20:28:02,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:02,529 INFO L225 Difference]: With dead ends: 828 [2020-09-24 20:28:02,529 INFO L226 Difference]: Without dead ends: 473 [2020-09-24 20:28:02,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:28:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-09-24 20:28:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 446. [2020-09-24 20:28:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-09-24 20:28:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 534 transitions. [2020-09-24 20:28:02,652 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 534 transitions. Word has length 160 [2020-09-24 20:28:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:02,654 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 534 transitions. [2020-09-24 20:28:02,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:28:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 534 transitions. [2020-09-24 20:28:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 20:28:02,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:02,666 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:28:02,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:02,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:02,667 INFO L82 PathProgramCache]: Analyzing trace with hash 218441517, now seen corresponding path program 1 times [2020-09-24 20:28:02,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:02,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165995680] [2020-09-24 20:28:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:03,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 20:28:03,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:28:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-09-24 20:28:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:28:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-24 20:28:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:28:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:03,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:03,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:03,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:28:03,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165995680] [2020-09-24 20:28:03,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:03,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:03,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646856039] [2020-09-24 20:28:03,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:03,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:03,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:03,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:03,831 INFO L87 Difference]: Start difference. First operand 446 states and 534 transitions. Second operand 4 states. [2020-09-24 20:28:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:04,117 INFO L93 Difference]: Finished difference Result 840 states and 1032 transitions. [2020-09-24 20:28:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:04,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2020-09-24 20:28:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:04,125 INFO L225 Difference]: With dead ends: 840 [2020-09-24 20:28:04,126 INFO L226 Difference]: Without dead ends: 534 [2020-09-24 20:28:04,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-09-24 20:28:04,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 466. [2020-09-24 20:28:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-09-24 20:28:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 558 transitions. [2020-09-24 20:28:04,166 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 558 transitions. Word has length 185 [2020-09-24 20:28:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:04,167 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 558 transitions. [2020-09-24 20:28:04,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 558 transitions. [2020-09-24 20:28:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 20:28:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:04,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:04,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:04,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash -139011456, now seen corresponding path program 1 times [2020-09-24 20:28:04,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:04,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915724666] [2020-09-24 20:28:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:05,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:06,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 20:28:06,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:28:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-09-24 20:28:06,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:28:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-24 20:28:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:28:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:06,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:06,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:06,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:06,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:28:06,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915724666] [2020-09-24 20:28:06,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:06,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:06,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57292367] [2020-09-24 20:28:06,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:06,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:06,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:06,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:06,145 INFO L87 Difference]: Start difference. First operand 466 states and 558 transitions. Second operand 4 states. [2020-09-24 20:28:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:06,391 INFO L93 Difference]: Finished difference Result 844 states and 1035 transitions. [2020-09-24 20:28:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:06,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-09-24 20:28:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:06,396 INFO L225 Difference]: With dead ends: 844 [2020-09-24 20:28:06,396 INFO L226 Difference]: Without dead ends: 518 [2020-09-24 20:28:06,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-09-24 20:28:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 494. [2020-09-24 20:28:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-09-24 20:28:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 593 transitions. [2020-09-24 20:28:06,417 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 593 transitions. Word has length 191 [2020-09-24 20:28:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:06,418 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 593 transitions. [2020-09-24 20:28:06,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 593 transitions. [2020-09-24 20:28:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 20:28:06,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:06,421 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] [2020-09-24 20:28:06,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:06,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1976453014, now seen corresponding path program 1 times [2020-09-24 20:28:06,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:06,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921906851] [2020-09-24 20:28:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:06,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:06,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:06,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 20:28:06,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:06,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-24 20:28:06,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-24 20:28:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:28:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:06,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:06,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:06,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:06,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:06,956 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 20:28:06,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921906851] [2020-09-24 20:28:06,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:06,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:06,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398920861] [2020-09-24 20:28:06,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:06,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:06,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:06,959 INFO L87 Difference]: Start difference. First operand 494 states and 593 transitions. Second operand 3 states. [2020-09-24 20:28:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:07,012 INFO L93 Difference]: Finished difference Result 864 states and 1059 transitions. [2020-09-24 20:28:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:07,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-09-24 20:28:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:07,016 INFO L225 Difference]: With dead ends: 864 [2020-09-24 20:28:07,017 INFO L226 Difference]: Without dead ends: 510 [2020-09-24 20:28:07,018 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 20:28:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-09-24 20:28:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2020-09-24 20:28:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-09-24 20:28:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 609 transitions. [2020-09-24 20:28:07,035 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 609 transitions. Word has length 195 [2020-09-24 20:28:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:07,036 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 609 transitions. [2020-09-24 20:28:07,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 609 transitions. [2020-09-24 20:28:07,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 20:28:07,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:07,039 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] [2020-09-24 20:28:07,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:07,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:07,040 INFO L82 PathProgramCache]: Analyzing trace with hash -460420793, now seen corresponding path program 1 times [2020-09-24 20:28:07,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:07,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246853981] [2020-09-24 20:28:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:07,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 20:28:07,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-24 20:28:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-24 20:28:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:28:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:07,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:07,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:07,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:07,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:28:07,587 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 20:28:07,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246853981] [2020-09-24 20:28:07,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:07,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:07,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050655660] [2020-09-24 20:28:07,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:07,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:07,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:07,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:07,591 INFO L87 Difference]: Start difference. First operand 510 states and 609 transitions. Second operand 3 states. [2020-09-24 20:28:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:07,731 INFO L93 Difference]: Finished difference Result 1210 states and 1499 transitions. [2020-09-24 20:28:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:07,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-09-24 20:28:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:07,739 INFO L225 Difference]: With dead ends: 1210 [2020-09-24 20:28:07,740 INFO L226 Difference]: Without dead ends: 856 [2020-09-24 20:28:07,742 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 20:28:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2020-09-24 20:28:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 854. [2020-09-24 20:28:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-09-24 20:28:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1041 transitions. [2020-09-24 20:28:07,789 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1041 transitions. Word has length 196 [2020-09-24 20:28:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:07,790 INFO L479 AbstractCegarLoop]: Abstraction has 854 states and 1041 transitions. [2020-09-24 20:28:07,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1041 transitions. [2020-09-24 20:28:07,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 20:28:07,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:07,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:07,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:28:07,797 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:07,798 INFO L82 PathProgramCache]: Analyzing trace with hash -312164926, now seen corresponding path program 1 times [2020-09-24 20:28:07,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:07,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391422087] [2020-09-24 20:28:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:07,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:08,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:08,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 20:28:08,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-09-24 20:28:08,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:28:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-24 20:28:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:28:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:28:08,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:08,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:08,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:08,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:08,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:28:08,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:28:08,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391422087] [2020-09-24 20:28:08,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:08,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:08,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836274450] [2020-09-24 20:28:08,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:08,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:08,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:08,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:08,765 INFO L87 Difference]: Start difference. First operand 854 states and 1041 transitions. Second operand 4 states. [2020-09-24 20:28:09,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:09,095 INFO L93 Difference]: Finished difference Result 1725 states and 2136 transitions. [2020-09-24 20:28:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:09,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-09-24 20:28:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:09,101 INFO L225 Difference]: With dead ends: 1725 [2020-09-24 20:28:09,102 INFO L226 Difference]: Without dead ends: 1027 [2020-09-24 20:28:09,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-09-24 20:28:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 873. [2020-09-24 20:28:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-09-24 20:28:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1064 transitions. [2020-09-24 20:28:09,138 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1064 transitions. Word has length 197 [2020-09-24 20:28:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:09,139 INFO L479 AbstractCegarLoop]: Abstraction has 873 states and 1064 transitions. [2020-09-24 20:28:09,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1064 transitions. [2020-09-24 20:28:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 20:28:09,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:09,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:09,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:28:09,144 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:09,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1017722485, now seen corresponding path program 1 times [2020-09-24 20:28:09,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:09,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461396309] [2020-09-24 20:28:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:09,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:09,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:10,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:10,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 20:28:10,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:28:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-09-24 20:28:10,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:28:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-24 20:28:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:28:10,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:10,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:10,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:10,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:10,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:28:10,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461396309] [2020-09-24 20:28:10,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:10,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:10,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355334928] [2020-09-24 20:28:10,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:10,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:10,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:10,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:10,608 INFO L87 Difference]: Start difference. First operand 873 states and 1064 transitions. Second operand 4 states. [2020-09-24 20:28:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:10,856 INFO L93 Difference]: Finished difference Result 1744 states and 2159 transitions. [2020-09-24 20:28:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:10,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-09-24 20:28:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:10,864 INFO L225 Difference]: With dead ends: 1744 [2020-09-24 20:28:10,865 INFO L226 Difference]: Without dead ends: 1027 [2020-09-24 20:28:10,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-09-24 20:28:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 854. [2020-09-24 20:28:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-09-24 20:28:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1041 transitions. [2020-09-24 20:28:10,916 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1041 transitions. Word has length 198 [2020-09-24 20:28:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:10,917 INFO L479 AbstractCegarLoop]: Abstraction has 854 states and 1041 transitions. [2020-09-24 20:28:10,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1041 transitions. [2020-09-24 20:28:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 20:28:10,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:10,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:10,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:28:10,924 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:10,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2140314204, now seen corresponding path program 1 times [2020-09-24 20:28:10,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:10,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878142690] [2020-09-24 20:28:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:11,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 20:28:11,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:28:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-09-24 20:28:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:28:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-24 20:28:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:28:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:12,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:12,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878142690] [2020-09-24 20:28:12,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:12,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 20:28:12,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285257683] [2020-09-24 20:28:12,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:12,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:12,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:12,062 INFO L87 Difference]: Start difference. First operand 854 states and 1041 transitions. Second operand 4 states. [2020-09-24 20:28:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,358 INFO L93 Difference]: Finished difference Result 1903 states and 2405 transitions. [2020-09-24 20:28:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:12,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-24 20:28:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,365 INFO L225 Difference]: With dead ends: 1903 [2020-09-24 20:28:12,365 INFO L226 Difference]: Without dead ends: 1173 [2020-09-24 20:28:12,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-09-24 20:28:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 993. [2020-09-24 20:28:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-24 20:28:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1224 transitions. [2020-09-24 20:28:12,399 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1224 transitions. Word has length 199 [2020-09-24 20:28:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,400 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1224 transitions. [2020-09-24 20:28:12,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1224 transitions. [2020-09-24 20:28:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 20:28:12,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:12,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:28:12,404 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1252882748, now seen corresponding path program 1 times [2020-09-24 20:28:12,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932793475] [2020-09-24 20:28:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-24 20:28:14,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:28:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-09-24 20:28:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-24 20:28:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:28:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:14,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:14,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:14,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932793475] [2020-09-24 20:28:14,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:14,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 20:28:14,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351441394] [2020-09-24 20:28:14,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:28:14,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:14,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:28:14,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:14,267 INFO L87 Difference]: Start difference. First operand 993 states and 1224 transitions. Second operand 5 states. [2020-09-24 20:28:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:14,751 INFO L93 Difference]: Finished difference Result 3020 states and 3835 transitions. [2020-09-24 20:28:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:28:14,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-09-24 20:28:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:14,762 INFO L225 Difference]: With dead ends: 3020 [2020-09-24 20:28:14,762 INFO L226 Difference]: Without dead ends: 2183 [2020-09-24 20:28:14,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:28:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2020-09-24 20:28:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 1100. [2020-09-24 20:28:14,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2020-09-24 20:28:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1355 transitions. [2020-09-24 20:28:14,852 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1355 transitions. Word has length 207 [2020-09-24 20:28:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:14,852 INFO L479 AbstractCegarLoop]: Abstraction has 1100 states and 1355 transitions. [2020-09-24 20:28:14,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:28:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1355 transitions. [2020-09-24 20:28:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 20:28:14,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:14,857 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:14,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:28:14,858 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1995787975, now seen corresponding path program 1 times [2020-09-24 20:28:14,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:14,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104449831] [2020-09-24 20:28:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-24 20:28:15,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:28:15,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-24 20:28:15,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-24 20:28:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:28:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:28:15,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104449831] [2020-09-24 20:28:15,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230563734] [2020-09-24 20:28:15,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,291 INFO L87 Difference]: Start difference. First operand 1100 states and 1355 transitions. Second operand 3 states. [2020-09-24 20:28:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,550 INFO L93 Difference]: Finished difference Result 2300 states and 2928 transitions. [2020-09-24 20:28:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-24 20:28:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,558 INFO L225 Difference]: With dead ends: 2300 [2020-09-24 20:28:15,558 INFO L226 Difference]: Without dead ends: 1276 [2020-09-24 20:28:15,561 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 20:28:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-09-24 20:28:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1232. [2020-09-24 20:28:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-09-24 20:28:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1517 transitions. [2020-09-24 20:28:15,608 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1517 transitions. Word has length 224 [2020-09-24 20:28:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,609 INFO L479 AbstractCegarLoop]: Abstraction has 1232 states and 1517 transitions. [2020-09-24 20:28:15,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1517 transitions. [2020-09-24 20:28:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 20:28:15,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,613 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:28:15,614 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,614 INFO L82 PathProgramCache]: Analyzing trace with hash 573547111, now seen corresponding path program 1 times [2020-09-24 20:28:15,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570411247] [2020-09-24 20:28:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-24 20:28:16,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-24 20:28:16,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-24 20:28:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:28:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:16,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:28:16,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570411247] [2020-09-24 20:28:16,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270361333] [2020-09-24 20:28:16,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,088 INFO L87 Difference]: Start difference. First operand 1232 states and 1517 transitions. Second operand 3 states. [2020-09-24 20:28:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,328 INFO L93 Difference]: Finished difference Result 2487 states and 3122 transitions. [2020-09-24 20:28:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-24 20:28:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,335 INFO L225 Difference]: With dead ends: 2487 [2020-09-24 20:28:16,335 INFO L226 Difference]: Without dead ends: 1347 [2020-09-24 20:28:16,338 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 20:28:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-24 20:28:16,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1273. [2020-09-24 20:28:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1273 states. [2020-09-24 20:28:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1562 transitions. [2020-09-24 20:28:16,386 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1562 transitions. Word has length 224 [2020-09-24 20:28:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,386 INFO L479 AbstractCegarLoop]: Abstraction has 1273 states and 1562 transitions. [2020-09-24 20:28:16,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1562 transitions. [2020-09-24 20:28:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 20:28:16,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:28:16,392 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1553684058, now seen corresponding path program 1 times [2020-09-24 20:28:16,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667731573] [2020-09-24 20:28:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 20:28:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:28:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-09-24 20:28:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:28:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-24 20:28:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:28:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 20:28:17,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667731573] [2020-09-24 20:28:17,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:17,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:17,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120377272] [2020-09-24 20:28:17,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:17,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:17,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:17,606 INFO L87 Difference]: Start difference. First operand 1273 states and 1562 transitions. Second operand 4 states. [2020-09-24 20:28:17,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,854 INFO L93 Difference]: Finished difference Result 2585 states and 3197 transitions. [2020-09-24 20:28:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:17,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2020-09-24 20:28:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,862 INFO L225 Difference]: With dead ends: 2585 [2020-09-24 20:28:17,862 INFO L226 Difference]: Without dead ends: 1468 [2020-09-24 20:28:17,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2020-09-24 20:28:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1300. [2020-09-24 20:28:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1300 states. [2020-09-24 20:28:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1592 transitions. [2020-09-24 20:28:17,916 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1592 transitions. Word has length 226 [2020-09-24 20:28:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,916 INFO L479 AbstractCegarLoop]: Abstraction has 1300 states and 1592 transitions. [2020-09-24 20:28:17,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1592 transitions. [2020-09-24 20:28:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 20:28:17,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 20:28:17,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:28:17,925 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,926 INFO L82 PathProgramCache]: Analyzing trace with hash -165389337, now seen corresponding path program 1 times [2020-09-24 20:28:17,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682620680] [2020-09-24 20:28:17,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:18,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-24 20:28:18,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:28:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-09-24 20:28:18,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-24 20:28:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:28:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:28:18,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:18,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:18,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:18,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:18,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:28:18,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682620680] [2020-09-24 20:28:18,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:18,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:18,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567713089] [2020-09-24 20:28:18,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:18,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:18,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:18,684 INFO L87 Difference]: Start difference. First operand 1300 states and 1592 transitions. Second operand 4 states. [2020-09-24 20:28:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:19,164 INFO L93 Difference]: Finished difference Result 3896 states and 4870 transitions. [2020-09-24 20:28:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:19,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2020-09-24 20:28:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:19,177 INFO L225 Difference]: With dead ends: 3896 [2020-09-24 20:28:19,177 INFO L226 Difference]: Without dead ends: 2752 [2020-09-24 20:28:19,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2020-09-24 20:28:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 1404. [2020-09-24 20:28:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-09-24 20:28:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1708 transitions. [2020-09-24 20:28:19,237 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1708 transitions. Word has length 232 [2020-09-24 20:28:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:19,238 INFO L479 AbstractCegarLoop]: Abstraction has 1404 states and 1708 transitions. [2020-09-24 20:28:19,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1708 transitions. [2020-09-24 20:28:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 20:28:19,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:19,244 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 20:28:19,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:28:19,244 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1574891641, now seen corresponding path program 1 times [2020-09-24 20:28:19,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:19,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853579434] [2020-09-24 20:28:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-24 20:28:19,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-24 20:28:19,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-24 20:28:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:28:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:19,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:19,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:28:19,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853579434] [2020-09-24 20:28:19,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:19,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:19,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211842359] [2020-09-24 20:28:19,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:19,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:19,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:19,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:19,911 INFO L87 Difference]: Start difference. First operand 1404 states and 1708 transitions. Second operand 4 states. [2020-09-24 20:28:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:20,347 INFO L93 Difference]: Finished difference Result 3934 states and 4866 transitions. [2020-09-24 20:28:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:20,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2020-09-24 20:28:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:20,364 INFO L225 Difference]: With dead ends: 3934 [2020-09-24 20:28:20,364 INFO L226 Difference]: Without dead ends: 2686 [2020-09-24 20:28:20,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2020-09-24 20:28:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1412. [2020-09-24 20:28:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-09-24 20:28:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1716 transitions. [2020-09-24 20:28:20,446 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1716 transitions. Word has length 232 [2020-09-24 20:28:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:20,447 INFO L479 AbstractCegarLoop]: Abstraction has 1412 states and 1716 transitions. [2020-09-24 20:28:20,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1716 transitions. [2020-09-24 20:28:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-24 20:28:20,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:20,454 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:20,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 20:28:20,455 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:20,455 INFO L82 PathProgramCache]: Analyzing trace with hash -21162653, now seen corresponding path program 1 times [2020-09-24 20:28:20,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:20,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014166667] [2020-09-24 20:28:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:20,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-24 20:28:20,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-24 20:28:20,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 20:28:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 20:28:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:20,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:20,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:20,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 20:28:20,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014166667] [2020-09-24 20:28:20,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:20,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:20,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627602487] [2020-09-24 20:28:20,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:20,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:20,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:20,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:20,936 INFO L87 Difference]: Start difference. First operand 1412 states and 1716 transitions. Second operand 3 states. [2020-09-24 20:28:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:21,156 INFO L93 Difference]: Finished difference Result 2821 states and 3492 transitions. [2020-09-24 20:28:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:21,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2020-09-24 20:28:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:21,164 INFO L225 Difference]: With dead ends: 2821 [2020-09-24 20:28:21,164 INFO L226 Difference]: Without dead ends: 1565 [2020-09-24 20:28:21,168 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 20:28:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-09-24 20:28:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1490. [2020-09-24 20:28:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-09-24 20:28:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1810 transitions. [2020-09-24 20:28:21,215 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1810 transitions. Word has length 253 [2020-09-24 20:28:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:21,216 INFO L479 AbstractCegarLoop]: Abstraction has 1490 states and 1810 transitions. [2020-09-24 20:28:21,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1810 transitions. [2020-09-24 20:28:21,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-24 20:28:21,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:21,220 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 20:28:21,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 20:28:21,220 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:21,221 INFO L82 PathProgramCache]: Analyzing trace with hash 242861699, now seen corresponding path program 1 times [2020-09-24 20:28:21,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:21,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793014791] [2020-09-24 20:28:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:22,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:22,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-24 20:28:22,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-09-24 20:28:22,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 20:28:22,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:28:22,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 20:28:22,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793014791] [2020-09-24 20:28:22,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:22,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:22,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859611682] [2020-09-24 20:28:22,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:22,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:22,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:22,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:22,381 INFO L87 Difference]: Start difference. First operand 1490 states and 1810 transitions. Second operand 4 states. [2020-09-24 20:28:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:22,759 INFO L93 Difference]: Finished difference Result 4330 states and 5348 transitions. [2020-09-24 20:28:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:22,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2020-09-24 20:28:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:22,773 INFO L225 Difference]: With dead ends: 4330 [2020-09-24 20:28:22,774 INFO L226 Difference]: Without dead ends: 2996 [2020-09-24 20:28:22,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-09-24 20:28:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 1496. [2020-09-24 20:28:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-09-24 20:28:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1816 transitions. [2020-09-24 20:28:22,844 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1816 transitions. Word has length 261 [2020-09-24 20:28:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:22,845 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 1816 transitions. [2020-09-24 20:28:22,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1816 transitions. [2020-09-24 20:28:22,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-24 20:28:22,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:22,848 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:22,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 20:28:22,849 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:22,849 INFO L82 PathProgramCache]: Analyzing trace with hash 52230374, now seen corresponding path program 1 times [2020-09-24 20:28:22,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:22,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181643158] [2020-09-24 20:28:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:24,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-24 20:28:24,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:28:24,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-09-24 20:28:24,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-09-24 20:28:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:24,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:24,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:24,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 20:28:24,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181643158] [2020-09-24 20:28:24,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:24,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:24,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051638647] [2020-09-24 20:28:24,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:24,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:24,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:24,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:24,190 INFO L87 Difference]: Start difference. First operand 1496 states and 1816 transitions. Second operand 3 states. [2020-09-24 20:28:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:24,241 INFO L93 Difference]: Finished difference Result 2882 states and 3530 transitions. [2020-09-24 20:28:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:24,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2020-09-24 20:28:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:24,251 INFO L225 Difference]: With dead ends: 2882 [2020-09-24 20:28:24,251 INFO L226 Difference]: Without dead ends: 1542 [2020-09-24 20:28:24,255 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 20:28:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2020-09-24 20:28:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1522. [2020-09-24 20:28:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-24 20:28:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1846 transitions. [2020-09-24 20:28:24,305 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1846 transitions. Word has length 262 [2020-09-24 20:28:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:24,305 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1846 transitions. [2020-09-24 20:28:24,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1846 transitions. [2020-09-24 20:28:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-24 20:28:24,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:24,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:24,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 20:28:24,335 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:24,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1418202927, now seen corresponding path program 1 times [2020-09-24 20:28:24,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:24,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964142109] [2020-09-24 20:28:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-24 20:28:24,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 20:28:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-24 20:28:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:28:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:24,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:24,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:24,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 20:28:24,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964142109] [2020-09-24 20:28:24,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:24,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:24,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152290763] [2020-09-24 20:28:24,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:24,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:24,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:24,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:24,705 INFO L87 Difference]: Start difference. First operand 1522 states and 1846 transitions. Second operand 3 states. [2020-09-24 20:28:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:24,771 INFO L93 Difference]: Finished difference Result 2250 states and 2744 transitions. [2020-09-24 20:28:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:24,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-24 20:28:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:24,776 INFO L225 Difference]: With dead ends: 2250 [2020-09-24 20:28:24,776 INFO L226 Difference]: Without dead ends: 884 [2020-09-24 20:28:24,782 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 20:28:24,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-24 20:28:24,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 884. [2020-09-24 20:28:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-24 20:28:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1057 transitions. [2020-09-24 20:28:24,809 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1057 transitions. Word has length 264 [2020-09-24 20:28:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:24,809 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1057 transitions. [2020-09-24 20:28:24,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1057 transitions. [2020-09-24 20:28:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-24 20:28:24,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:24,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:24,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 20:28:24,813 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:24,814 INFO L82 PathProgramCache]: Analyzing trace with hash -196875119, now seen corresponding path program 1 times [2020-09-24 20:28:24,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:24,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929980065] [2020-09-24 20:28:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:28:24,857 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:28:24,857 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:28:24,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 20:28:24,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:28:24 BoogieIcfgContainer [2020-09-24 20:28:24,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:28:24,928 INFO L168 Benchmark]: Toolchain (without parser) took 27004.30 ms. Allocated memory was 137.4 MB in the beginning and 623.4 MB in the end (delta: 486.0 MB). Free memory was 100.5 MB in the beginning and 393.9 MB in the end (delta: -293.4 MB). Peak memory consumption was 192.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:24,929 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:28:24,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.03 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 173.8 MB in the end (delta: -73.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:24,935 INFO L168 Benchmark]: Boogie Preprocessor took 69.50 ms. Allocated memory is still 199.8 MB. Free memory was 173.8 MB in the beginning and 171.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:24,938 INFO L168 Benchmark]: RCFGBuilder took 1074.69 ms. Allocated memory is still 199.8 MB. Free memory was 171.6 MB in the beginning and 97.7 MB in the end (delta: 73.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:24,938 INFO L168 Benchmark]: TraceAbstraction took 25194.38 ms. Allocated memory was 199.8 MB in the beginning and 623.4 MB in the end (delta: 423.6 MB). Free memory was 97.7 MB in the beginning and 393.9 MB in the end (delta: -296.1 MB). Peak memory consumption was 127.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:24,946 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 655.03 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 173.8 MB in the end (delta: -73.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.50 ms. Allocated memory is still 199.8 MB. Free memory was 173.8 MB in the beginning and 171.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1074.69 ms. Allocated memory is still 199.8 MB. Free memory was 171.6 MB in the beginning and 97.7 MB in the end (delta: 73.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25194.38 ms. Allocated memory was 199.8 MB in the beginning and 623.4 MB in the end (delta: 423.6 MB). Free memory was 97.7 MB in the beginning and 393.9 MB in the end (delta: -296.1 MB). Peak memory consumption was 127.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L653] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 = __VERIFIER_nondet_int() ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__state = initial_state [L73] blastFlag = 0 [L74] tmp = __VERIFIER_nondet_int() [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND FALSE !(\read(s__hit)) [L294] s__state = 8512 [L296] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND TRUE s__state == 8512 [L301] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L302] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L303] COND TRUE __cil_tmp56 + 256UL [L304] skip = 1 [L315] s__state = 8528 [L316] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND TRUE s__state == 8528 [L320] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L321] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L323] __cil_tmp57 = (unsigned long )s__options [L324] COND TRUE __cil_tmp57 + 2097152UL [L325] s__s3__tmp__use_rsa_tmp = 1 [L330] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L357] ret = __VERIFIER_nondet_int() [L358] COND FALSE !(blastFlag == 6) [L361] COND FALSE !(ret <= 0) [L378] s__state = 8544 [L379] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND TRUE ! s__s3__tmp__reuse_message [L601] COND TRUE ! skip [L602] COND TRUE state == 8528 [L603] COND TRUE s__state == 8544 [L604] COND TRUE tmp___7 != 1024 [L605] COND TRUE tmp___7 != 512 [L606] COND TRUE __cil_tmp58 != 4294967294 [L607] COND TRUE l != 4294967266 [L642] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 440 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.0s, OverallIterations: 19, TraceHistogramMax: 4, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9975 SDtfs, 5539 SDslu, 13425 SDs, 0 SdLazy, 2821 SolverSat, 305 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1522occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 6214 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 4171 NumberOfCodeBlocks, 4171 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3888 ConstructedInterpolants, 0 QuantifiedInterpolants, 1109496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 700/710 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...