/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:22:47,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:22:47,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:22:47,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:22:47,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:22:47,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:22:47,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:22:47,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:22:47,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:22:47,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:22:47,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:22:47,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:22:47,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:22:47,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:22:47,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:22:47,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:22:47,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:22:47,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:22:47,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:22:47,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:22:47,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:22:47,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:22:47,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:22:47,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:22:47,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:22:47,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:22:47,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:22:47,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:22:47,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:22:47,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:22:47,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:22:47,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:22:47,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:22:47,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:22:47,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:22:47,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:22:47,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:22:47,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:22:47,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:22:47,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:22:47,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:22:47,263 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 [2020-09-21 11:22:47,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:22:47,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:22:47,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:22:47,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:22:47,303 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:22:47,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:22:47,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:22:47,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:22:47,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:22:47,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:22:47,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:22:47,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:22:47,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:22:47,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:22:47,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:22:47,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:22:47,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:22:47,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:22:47,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:22:47,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:22:47,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:22:47,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:22:47,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:22:47,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:22:47,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:22:47,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:22:47,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:22:47,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:22:47,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:22:47,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:22:47,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:22:47,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:22:47,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:22:47,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:22:47,778 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:22:47,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-21 11:22:47,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/224d5b32b/e415f3f383ed4d5aa56f0066c2976477/FLAGd7d302e2d [2020-09-21 11:22:48,491 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:22:48,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-21 11:22:48,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/224d5b32b/e415f3f383ed4d5aa56f0066c2976477/FLAGd7d302e2d [2020-09-21 11:22:48,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/224d5b32b/e415f3f383ed4d5aa56f0066c2976477 [2020-09-21 11:22:48,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:22:48,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:22:48,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:22:48,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:22:48,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:22:48,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:48" (1/1) ... [2020-09-21 11:22:48,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:48, skipping insertion in model container [2020-09-21 11:22:48,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:48" (1/1) ... [2020-09-21 11:22:48,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:22:48,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:22:49,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:22:49,236 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:22:49,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:22:49,447 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:22:49,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49 WrapperNode [2020-09-21 11:22:49,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:22:49,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:22:49,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:22:49,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:22:49,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (1/1) ... [2020-09-21 11:22:49,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (1/1) ... [2020-09-21 11:22:49,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (1/1) ... [2020-09-21 11:22:49,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (1/1) ... [2020-09-21 11:22:49,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (1/1) ... [2020-09-21 11:22:49,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (1/1) ... [2020-09-21 11:22:49,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (1/1) ... [2020-09-21 11:22:49,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:22:49,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:22:49,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:22:49,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:22:49,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (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 [2020-09-21 11:22:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:22:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:22:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-21 11:22:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:22:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:22:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 11:22:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:22:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-21 11:22:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 11:22:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-21 11:22:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:22:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:22:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:22:49,890 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 11:22:50,512 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-21 11:22:50,513 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-21 11:22:50,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:22:50,526 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:22:50,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:22:50 BoogieIcfgContainer [2020-09-21 11:22:50,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:22:50,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:22:50,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:22:50,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:22:50,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:22:48" (1/3) ... [2020-09-21 11:22:50,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ba6899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:22:50, skipping insertion in model container [2020-09-21 11:22:50,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:49" (2/3) ... [2020-09-21 11:22:50,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ba6899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:22:50, skipping insertion in model container [2020-09-21 11:22:50,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:22:50" (3/3) ... [2020-09-21 11:22:50,543 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-21 11:22:50,555 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:22:50,567 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:22:50,588 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:22:50,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:22:50,621 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:22:50,621 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:22:50,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:22:50,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:22:50,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:22:50,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:22:50,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:22:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-09-21 11:22:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 11:22:50,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:50,662 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] [2020-09-21 11:22:50,663 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:50,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-09-21 11:22:50,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:50,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939763811] [2020-09-21 11:22:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:50,986 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:50,986 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:50,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:50,987 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:50,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:22:50,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-21 11:22:50,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:22:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:22:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:22:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:51,115 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:51,115 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:51,115 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:51,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:51,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:51,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:51,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:51,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:51,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939763811] [2020-09-21 11:22:51,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:51,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:22:51,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352522580] [2020-09-21 11:22:51,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:22:51,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:51,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:22:51,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:22:51,159 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-09-21 11:22:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:51,448 INFO L93 Difference]: Finished difference Result 366 states and 631 transitions. [2020-09-21 11:22:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:22:51,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-21 11:22:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:51,467 INFO L225 Difference]: With dead ends: 366 [2020-09-21 11:22:51,467 INFO L226 Difference]: Without dead ends: 183 [2020-09-21 11:22:51,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:22:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-21 11:22:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2020-09-21 11:22:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-21 11:22:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 279 transitions. [2020-09-21 11:22:51,541 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 279 transitions. Word has length 33 [2020-09-21 11:22:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:51,542 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 279 transitions. [2020-09-21 11:22:51,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:22:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 279 transitions. [2020-09-21 11:22:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 11:22:51,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:51,544 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] [2020-09-21 11:22:51,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:22:51,545 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:51,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-09-21 11:22:51,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:51,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46659455] [2020-09-21 11:22:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:51,623 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:51,623 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:51,624 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:51,624 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:51,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:22:51,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 11:22:51,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:22:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:22:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 11:22:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:51,750 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:51,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:51,751 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:51,751 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:51,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:51,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:51,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46659455] [2020-09-21 11:22:51,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:51,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:22:51,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322635069] [2020-09-21 11:22:51,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:22:51,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:51,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:22:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:22:51,762 INFO L87 Difference]: Start difference. First operand 180 states and 279 transitions. Second operand 6 states. [2020-09-21 11:22:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:52,202 INFO L93 Difference]: Finished difference Result 450 states and 704 transitions. [2020-09-21 11:22:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:22:52,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-21 11:22:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:52,206 INFO L225 Difference]: With dead ends: 450 [2020-09-21 11:22:52,206 INFO L226 Difference]: Without dead ends: 271 [2020-09-21 11:22:52,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:22:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-21 11:22:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 252. [2020-09-21 11:22:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-21 11:22:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 374 transitions. [2020-09-21 11:22:52,256 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 374 transitions. Word has length 37 [2020-09-21 11:22:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:52,259 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 374 transitions. [2020-09-21 11:22:52,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:22:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 374 transitions. [2020-09-21 11:22:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-21 11:22:52,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:52,263 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 11:22:52,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:22:52,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1858967261, now seen corresponding path program 1 times [2020-09-21 11:22:52,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:52,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227434056] [2020-09-21 11:22:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:52,333 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:52,334 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:52,334 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:52,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:52,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 11:22:52,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:22:52,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 11:22:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:22:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:52,402 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:52,402 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:52,402 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:52,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:52,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227434056] [2020-09-21 11:22:52,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:52,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:52,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457889121] [2020-09-21 11:22:52,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:52,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:52,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:52,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:52,444 INFO L87 Difference]: Start difference. First operand 252 states and 374 transitions. Second operand 3 states. [2020-09-21 11:22:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:52,719 INFO L93 Difference]: Finished difference Result 573 states and 860 transitions. [2020-09-21 11:22:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:52,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-21 11:22:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:52,725 INFO L225 Difference]: With dead ends: 573 [2020-09-21 11:22:52,725 INFO L226 Difference]: Without dead ends: 309 [2020-09-21 11:22:52,729 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 [2020-09-21 11:22:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-21 11:22:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 294. [2020-09-21 11:22:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-09-21 11:22:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 439 transitions. [2020-09-21 11:22:52,767 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 439 transitions. Word has length 50 [2020-09-21 11:22:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:52,767 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 439 transitions. [2020-09-21 11:22:52,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 439 transitions. [2020-09-21 11:22:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 11:22:52,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:52,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:52,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:22:52,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:52,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1022233338, now seen corresponding path program 1 times [2020-09-21 11:22:52,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:52,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705000313] [2020-09-21 11:22:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:52,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:52,815 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:52,815 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 11:22:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:22:52,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 11:22:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:22:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:52,857 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:52,857 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:52,857 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:52,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:52,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:52,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705000313] [2020-09-21 11:22:52,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:52,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:52,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027695146] [2020-09-21 11:22:52,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:52,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:52,865 INFO L87 Difference]: Start difference. First operand 294 states and 439 transitions. Second operand 3 states. [2020-09-21 11:22:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:53,112 INFO L93 Difference]: Finished difference Result 698 states and 1047 transitions. [2020-09-21 11:22:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:53,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-21 11:22:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:53,115 INFO L225 Difference]: With dead ends: 698 [2020-09-21 11:22:53,116 INFO L226 Difference]: Without dead ends: 395 [2020-09-21 11:22:53,117 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 [2020-09-21 11:22:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-09-21 11:22:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 352. [2020-09-21 11:22:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-09-21 11:22:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 519 transitions. [2020-09-21 11:22:53,136 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 519 transitions. Word has length 51 [2020-09-21 11:22:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:53,136 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 519 transitions. [2020-09-21 11:22:53,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 519 transitions. [2020-09-21 11:22:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 11:22:53,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:53,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-21 11:22:53,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:22:53,140 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:53,140 INFO L82 PathProgramCache]: Analyzing trace with hash 851753648, now seen corresponding path program 1 times [2020-09-21 11:22:53,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:53,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72062871] [2020-09-21 11:22:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:53,171 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:53,171 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:53,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:53,172 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 11:22:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:53,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 11:22:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:22:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:53,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:53,213 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:53,213 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:53,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:53,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:53,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:53,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:53,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:53,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:53,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 11:22:53,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72062871] [2020-09-21 11:22:53,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:53,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:53,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855018019] [2020-09-21 11:22:53,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:53,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:53,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:53,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:53,223 INFO L87 Difference]: Start difference. First operand 352 states and 519 transitions. Second operand 3 states. [2020-09-21 11:22:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:53,478 INFO L93 Difference]: Finished difference Result 781 states and 1148 transitions. [2020-09-21 11:22:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:53,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-21 11:22:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:53,481 INFO L225 Difference]: With dead ends: 781 [2020-09-21 11:22:53,481 INFO L226 Difference]: Without dead ends: 439 [2020-09-21 11:22:53,483 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 [2020-09-21 11:22:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-21 11:22:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 395. [2020-09-21 11:22:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-21 11:22:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 586 transitions. [2020-09-21 11:22:53,499 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 586 transitions. Word has length 73 [2020-09-21 11:22:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:53,499 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 586 transitions. [2020-09-21 11:22:53,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 586 transitions. [2020-09-21 11:22:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 11:22:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:53,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:53,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:22:53,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:53,503 INFO L82 PathProgramCache]: Analyzing trace with hash 898909078, now seen corresponding path program 1 times [2020-09-21 11:22:53,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:53,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561722326] [2020-09-21 11:22:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:53,548 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:53,548 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:53,548 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:53,549 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-21 11:22:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:53,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 11:22:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 11:22:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:53,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:53,618 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:53,618 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:53,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:53,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:22:53,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 11:22:53,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561722326] [2020-09-21 11:22:53,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:53,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:53,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367002248] [2020-09-21 11:22:53,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:53,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:53,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:53,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:53,642 INFO L87 Difference]: Start difference. First operand 395 states and 586 transitions. Second operand 3 states. [2020-09-21 11:22:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:53,878 INFO L93 Difference]: Finished difference Result 834 states and 1247 transitions. [2020-09-21 11:22:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:53,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-21 11:22:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:53,882 INFO L225 Difference]: With dead ends: 834 [2020-09-21 11:22:53,882 INFO L226 Difference]: Without dead ends: 452 [2020-09-21 11:22:53,883 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 [2020-09-21 11:22:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-09-21 11:22:53,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 446. [2020-09-21 11:22:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-09-21 11:22:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 633 transitions. [2020-09-21 11:22:53,901 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 633 transitions. Word has length 86 [2020-09-21 11:22:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:53,901 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 633 transitions. [2020-09-21 11:22:53,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 633 transitions. [2020-09-21 11:22:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 11:22:53,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:53,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:53,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:22:53,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:53,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1322555800, now seen corresponding path program 1 times [2020-09-21 11:22:53,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:53,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798180698] [2020-09-21 11:22:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:53,940 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:53,941 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:53,941 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:53,941 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-21 11:22:53,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:53,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 11:22:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 11:22:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:53,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:53,976 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:53,976 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:53,976 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:53,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:53,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 11:22:54,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798180698] [2020-09-21 11:22:54,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:54,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:54,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77367117] [2020-09-21 11:22:54,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:54,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:54,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:54,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:54,016 INFO L87 Difference]: Start difference. First operand 446 states and 633 transitions. Second operand 3 states. [2020-09-21 11:22:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:54,189 INFO L93 Difference]: Finished difference Result 910 states and 1291 transitions. [2020-09-21 11:22:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:54,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-21 11:22:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:54,193 INFO L225 Difference]: With dead ends: 910 [2020-09-21 11:22:54,193 INFO L226 Difference]: Without dead ends: 477 [2020-09-21 11:22:54,195 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 [2020-09-21 11:22:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-09-21 11:22:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 472. [2020-09-21 11:22:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-21 11:22:54,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 665 transitions. [2020-09-21 11:22:54,211 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 665 transitions. Word has length 86 [2020-09-21 11:22:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:54,212 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 665 transitions. [2020-09-21 11:22:54,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 665 transitions. [2020-09-21 11:22:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 11:22:54,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:54,214 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:54,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:22:54,214 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:54,215 INFO L82 PathProgramCache]: Analyzing trace with hash -11606276, now seen corresponding path program 1 times [2020-09-21 11:22:54,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:54,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086662171] [2020-09-21 11:22:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:54,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:54,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:54,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:54,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 11:22:54,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:54,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-21 11:22:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 11:22:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:54,286 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:54,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:54,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-21 11:22:54,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086662171] [2020-09-21 11:22:54,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:54,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:54,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946290607] [2020-09-21 11:22:54,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:54,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:54,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:54,300 INFO L87 Difference]: Start difference. First operand 472 states and 665 transitions. Second operand 3 states. [2020-09-21 11:22:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:54,477 INFO L93 Difference]: Finished difference Result 973 states and 1375 transitions. [2020-09-21 11:22:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:54,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-09-21 11:22:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:54,481 INFO L225 Difference]: With dead ends: 973 [2020-09-21 11:22:54,481 INFO L226 Difference]: Without dead ends: 514 [2020-09-21 11:22:54,482 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 [2020-09-21 11:22:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-21 11:22:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 500. [2020-09-21 11:22:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-21 11:22:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 699 transitions. [2020-09-21 11:22:54,502 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 699 transitions. Word has length 108 [2020-09-21 11:22:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:54,503 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 699 transitions. [2020-09-21 11:22:54,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 699 transitions. [2020-09-21 11:22:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-21 11:22:54,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:54,506 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2020-09-21 11:22:54,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:22:54,506 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:54,507 INFO L82 PathProgramCache]: Analyzing trace with hash -567206243, now seen corresponding path program 1 times [2020-09-21 11:22:54,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:54,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957204421] [2020-09-21 11:22:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:54,543 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:54,543 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:54,543 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:54,544 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:54,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-21 11:22:54,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:54,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 11:22:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:22:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:54,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:54,586 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:54,586 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:54,587 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:54,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:54,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:22:54,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957204421] [2020-09-21 11:22:54,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:54,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:54,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391796931] [2020-09-21 11:22:54,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:54,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:54,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:54,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:54,602 INFO L87 Difference]: Start difference. First operand 500 states and 699 transitions. Second operand 3 states. [2020-09-21 11:22:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:54,753 INFO L93 Difference]: Finished difference Result 1474 states and 2063 transitions. [2020-09-21 11:22:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:54,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-09-21 11:22:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:54,759 INFO L225 Difference]: With dead ends: 1474 [2020-09-21 11:22:54,760 INFO L226 Difference]: Without dead ends: 987 [2020-09-21 11:22:54,761 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 [2020-09-21 11:22:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-09-21 11:22:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 985. [2020-09-21 11:22:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-21 11:22:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1360 transitions. [2020-09-21 11:22:54,815 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1360 transitions. Word has length 114 [2020-09-21 11:22:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:54,816 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1360 transitions. [2020-09-21 11:22:54,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1360 transitions. [2020-09-21 11:22:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-21 11:22:54,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:54,818 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2020-09-21 11:22:54,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:22:54,818 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:54,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:54,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1186659125, now seen corresponding path program 1 times [2020-09-21 11:22:54,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:54,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711349959] [2020-09-21 11:22:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:54,860 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:54,860 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:54,861 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:54,861 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:54,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-21 11:22:54,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:54,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-21 11:22:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:22:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:54,912 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:54,912 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:54,912 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:54,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:54,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:54,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:54,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:54,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:54,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-21 11:22:54,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711349959] [2020-09-21 11:22:54,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:54,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:54,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866813087] [2020-09-21 11:22:54,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:54,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:54,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:54,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:54,926 INFO L87 Difference]: Start difference. First operand 985 states and 1360 transitions. Second operand 3 states. [2020-09-21 11:22:55,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:55,237 INFO L93 Difference]: Finished difference Result 2040 states and 2802 transitions. [2020-09-21 11:22:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:55,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-09-21 11:22:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:55,246 INFO L225 Difference]: With dead ends: 2040 [2020-09-21 11:22:55,246 INFO L226 Difference]: Without dead ends: 1066 [2020-09-21 11:22:55,249 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 [2020-09-21 11:22:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-21 11:22:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 991. [2020-09-21 11:22:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-09-21 11:22:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1364 transitions. [2020-09-21 11:22:55,302 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1364 transitions. Word has length 117 [2020-09-21 11:22:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:55,303 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1364 transitions. [2020-09-21 11:22:55,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1364 transitions. [2020-09-21 11:22:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-21 11:22:55,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:55,308 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-09-21 11:22:55,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:22:55,309 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:55,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:55,309 INFO L82 PathProgramCache]: Analyzing trace with hash 558356394, now seen corresponding path program 1 times [2020-09-21 11:22:55,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:55,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862592994] [2020-09-21 11:22:55,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:55,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:55,360 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:55,360 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:55,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:55,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-21 11:22:55,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:22:55,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-21 11:22:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:22:55,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:55,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:55,423 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:55,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:55,424 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:55,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:55,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:55,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-21 11:22:55,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862592994] [2020-09-21 11:22:55,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:55,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:55,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986764870] [2020-09-21 11:22:55,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:55,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:55,453 INFO L87 Difference]: Start difference. First operand 991 states and 1364 transitions. Second operand 3 states. [2020-09-21 11:22:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:55,522 INFO L93 Difference]: Finished difference Result 2933 states and 4032 transitions. [2020-09-21 11:22:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:55,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-09-21 11:22:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:55,537 INFO L225 Difference]: With dead ends: 2933 [2020-09-21 11:22:55,537 INFO L226 Difference]: Without dead ends: 1955 [2020-09-21 11:22:55,545 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 [2020-09-21 11:22:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-09-21 11:22:55,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 993. [2020-09-21 11:22:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-21 11:22:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1366 transitions. [2020-09-21 11:22:55,678 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1366 transitions. Word has length 135 [2020-09-21 11:22:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:55,678 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1366 transitions. [2020-09-21 11:22:55,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1366 transitions. [2020-09-21 11:22:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-21 11:22:55,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:55,683 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-09-21 11:22:55,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:22:55,684 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:55,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:55,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1491031448, now seen corresponding path program 1 times [2020-09-21 11:22:55,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:55,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383485475] [2020-09-21 11:22:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:55,741 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:55,741 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:55,742 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:55,742 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:55,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-21 11:22:55,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:55,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:55,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-21 11:22:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:22:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:55,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:55,817 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:55,818 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:55,819 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:55,819 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:55,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:55,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:55,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:55,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:55,836 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-21 11:22:55,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383485475] [2020-09-21 11:22:55,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:55,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:55,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518783244] [2020-09-21 11:22:55,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:55,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:55,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:55,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:55,840 INFO L87 Difference]: Start difference. First operand 993 states and 1366 transitions. Second operand 3 states. [2020-09-21 11:22:56,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:56,061 INFO L93 Difference]: Finished difference Result 2051 states and 2830 transitions. [2020-09-21 11:22:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:56,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-09-21 11:22:56,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:56,067 INFO L225 Difference]: With dead ends: 2051 [2020-09-21 11:22:56,067 INFO L226 Difference]: Without dead ends: 1071 [2020-09-21 11:22:56,070 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 [2020-09-21 11:22:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-09-21 11:22:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1053. [2020-09-21 11:22:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-09-21 11:22:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1438 transitions. [2020-09-21 11:22:56,107 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1438 transitions. Word has length 135 [2020-09-21 11:22:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:56,108 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1438 transitions. [2020-09-21 11:22:56,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1438 transitions. [2020-09-21 11:22:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-21 11:22:56,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:56,110 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-09-21 11:22:56,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:22:56,111 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:56,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2028146086, now seen corresponding path program 1 times [2020-09-21 11:22:56,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:56,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982778369] [2020-09-21 11:22:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:56,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:56,154 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:56,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:56,155 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:56,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-21 11:22:56,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:56,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:22:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-21 11:22:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:22:56,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:56,226 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:56,226 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:56,227 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:56,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:56,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-21 11:22:56,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982778369] [2020-09-21 11:22:56,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:56,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-21 11:22:56,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132625419] [2020-09-21 11:22:56,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:22:56,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:56,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:22:56,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:22:56,243 INFO L87 Difference]: Start difference. First operand 1053 states and 1438 transitions. Second operand 4 states. [2020-09-21 11:22:56,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:56,550 INFO L93 Difference]: Finished difference Result 2657 states and 3692 transitions. [2020-09-21 11:22:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:22:56,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-21 11:22:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:56,560 INFO L225 Difference]: With dead ends: 2657 [2020-09-21 11:22:56,560 INFO L226 Difference]: Without dead ends: 1501 [2020-09-21 11:22:56,563 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 [2020-09-21 11:22:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-09-21 11:22:56,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1311. [2020-09-21 11:22:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-09-21 11:22:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1826 transitions. [2020-09-21 11:22:56,650 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1826 transitions. Word has length 138 [2020-09-21 11:22:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:56,650 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1826 transitions. [2020-09-21 11:22:56,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:22:56,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1826 transitions. [2020-09-21 11:22:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 11:22:56,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:56,654 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:56,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:22:56,655 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2000958952, now seen corresponding path program 1 times [2020-09-21 11:22:56,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:56,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126378254] [2020-09-21 11:22:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:56,693 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:56,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:56,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 11:22:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 11:22:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-21 11:22:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:56,747 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:56,747 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:56,747 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:56,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:56,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:56,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-21 11:22:56,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126378254] [2020-09-21 11:22:56,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:56,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:56,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600797413] [2020-09-21 11:22:56,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:56,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:56,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:56,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:56,782 INFO L87 Difference]: Start difference. First operand 1311 states and 1826 transitions. Second operand 3 states. [2020-09-21 11:22:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:56,875 INFO L93 Difference]: Finished difference Result 3819 states and 5332 transitions. [2020-09-21 11:22:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:56,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-09-21 11:22:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:56,888 INFO L225 Difference]: With dead ends: 3819 [2020-09-21 11:22:56,888 INFO L226 Difference]: Without dead ends: 2521 [2020-09-21 11:22:56,891 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 [2020-09-21 11:22:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2020-09-21 11:22:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2519. [2020-09-21 11:22:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-09-21 11:22:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3514 transitions. [2020-09-21 11:22:56,988 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3514 transitions. Word has length 149 [2020-09-21 11:22:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:56,988 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 3514 transitions. [2020-09-21 11:22:56,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3514 transitions. [2020-09-21 11:22:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 11:22:56,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:56,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:56,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:22:56,992 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash -989841702, now seen corresponding path program 1 times [2020-09-21 11:22:56,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:56,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483789011] [2020-09-21 11:22:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:57,031 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:57,031 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:57,031 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:57,032 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:57,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 11:22:57,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:57,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:22:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-21 11:22:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 11:22:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:57,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:57,085 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:57,085 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:57,085 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:57,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:57,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-21 11:22:57,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483789011] [2020-09-21 11:22:57,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:57,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-21 11:22:57,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603068631] [2020-09-21 11:22:57,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:22:57,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:57,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:22:57,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:22:57,105 INFO L87 Difference]: Start difference. First operand 2519 states and 3514 transitions. Second operand 4 states. [2020-09-21 11:22:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:57,513 INFO L93 Difference]: Finished difference Result 5217 states and 7249 transitions. [2020-09-21 11:22:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:22:57,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-21 11:22:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:57,532 INFO L225 Difference]: With dead ends: 5217 [2020-09-21 11:22:57,533 INFO L226 Difference]: Without dead ends: 2611 [2020-09-21 11:22:57,541 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 [2020-09-21 11:22:57,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-09-21 11:22:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2583. [2020-09-21 11:22:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2583 states. [2020-09-21 11:22:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 3596 transitions. [2020-09-21 11:22:57,682 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 3596 transitions. Word has length 149 [2020-09-21 11:22:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:57,683 INFO L479 AbstractCegarLoop]: Abstraction has 2583 states and 3596 transitions. [2020-09-21 11:22:57,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:22:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 3596 transitions. [2020-09-21 11:22:57,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-21 11:22:57,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:57,690 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2020-09-21 11:22:57,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:22:57,690 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:57,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-09-21 11:22:57,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:57,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445931677] [2020-09-21 11:22:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:57,745 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:57,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:57,746 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:57,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:57,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-21 11:22:57,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:57,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-21 11:22:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 11:22:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:57,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:57,816 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:57,816 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:57,817 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:57,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:57,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:57,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:57,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-09-21 11:22:57,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445931677] [2020-09-21 11:22:57,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:57,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:57,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748641868] [2020-09-21 11:22:57,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:57,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:57,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:57,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:57,847 INFO L87 Difference]: Start difference. First operand 2583 states and 3596 transitions. Second operand 3 states. [2020-09-21 11:22:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:58,056 INFO L93 Difference]: Finished difference Result 7639 states and 10616 transitions. [2020-09-21 11:22:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:58,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-09-21 11:22:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:58,087 INFO L225 Difference]: With dead ends: 7639 [2020-09-21 11:22:58,087 INFO L226 Difference]: Without dead ends: 5069 [2020-09-21 11:22:58,097 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 [2020-09-21 11:22:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2020-09-21 11:22:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 5067. [2020-09-21 11:22:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5067 states. [2020-09-21 11:22:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 7024 transitions. [2020-09-21 11:22:58,409 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 7024 transitions. Word has length 159 [2020-09-21 11:22:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:58,410 INFO L479 AbstractCegarLoop]: Abstraction has 5067 states and 7024 transitions. [2020-09-21 11:22:58,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 7024 transitions. [2020-09-21 11:22:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-21 11:22:58,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:58,422 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2020-09-21 11:22:58,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:22:58,423 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-09-21 11:22:58,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:58,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137937473] [2020-09-21 11:22:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:58,551 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:58,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:58,552 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:58,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-21 11:22:58,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:22:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-21 11:22:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:22:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:58,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:58,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:58,675 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:58,676 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:58,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:58,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-09-21 11:22:58,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137937473] [2020-09-21 11:22:58,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:58,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:58,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762421249] [2020-09-21 11:22:58,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:58,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:58,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:58,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:58,763 INFO L87 Difference]: Start difference. First operand 5067 states and 7024 transitions. Second operand 3 states. [2020-09-21 11:22:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:59,033 INFO L93 Difference]: Finished difference Result 15015 states and 20750 transitions. [2020-09-21 11:22:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:59,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-09-21 11:22:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:59,078 INFO L225 Difference]: With dead ends: 15015 [2020-09-21 11:22:59,078 INFO L226 Difference]: Without dead ends: 9961 [2020-09-21 11:22:59,091 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 [2020-09-21 11:22:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9961 states. [2020-09-21 11:22:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9961 to 5067. [2020-09-21 11:22:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5067 states. [2020-09-21 11:22:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 7008 transitions. [2020-09-21 11:22:59,354 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 7008 transitions. Word has length 161 [2020-09-21 11:22:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:59,354 INFO L479 AbstractCegarLoop]: Abstraction has 5067 states and 7008 transitions. [2020-09-21 11:22:59,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 7008 transitions. [2020-09-21 11:22:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-21 11:22:59,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:59,360 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2020-09-21 11:22:59,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 11:22:59,360 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:59,361 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-09-21 11:22:59,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:59,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315292151] [2020-09-21 11:22:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:22:59,425 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:22:59,425 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:22:59,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 11:22:59,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:22:59 BoogieIcfgContainer [2020-09-21 11:22:59,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:22:59,474 INFO L168 Benchmark]: Toolchain (without parser) took 10690.21 ms. Allocated memory was 147.8 MB in the beginning and 379.1 MB in the end (delta: 231.2 MB). Free memory was 102.1 MB in the beginning and 107.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 225.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:59,475 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:22:59,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.49 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 179.2 MB in the end (delta: -77.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:59,476 INFO L168 Benchmark]: Boogie Preprocessor took 69.54 ms. Allocated memory is still 204.5 MB. Free memory was 179.2 MB in the beginning and 175.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:59,477 INFO L168 Benchmark]: RCFGBuilder took 1015.18 ms. Allocated memory is still 204.5 MB. Free memory was 175.9 MB in the beginning and 118.6 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:59,478 INFO L168 Benchmark]: TraceAbstraction took 8936.00 ms. Allocated memory was 204.5 MB in the beginning and 379.1 MB in the end (delta: 174.6 MB). Free memory was 117.9 MB in the beginning and 107.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:59,481 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.49 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 179.2 MB in the end (delta: -77.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.54 ms. Allocated memory is still 204.5 MB. Free memory was 179.2 MB in the beginning and 175.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1015.18 ms. Allocated memory is still 204.5 MB. Free memory was 175.9 MB in the beginning and 118.6 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8936.00 ms. Allocated memory was 204.5 MB in the beginning and 379.1 MB in the end (delta: 174.6 MB). Free memory was 117.9 MB in the beginning and 107.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 18, TraceHistogramMax: 6, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4988 SDtfs, 2968 SDslu, 4015 SDs, 0 SdLazy, 1671 SolverSat, 408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5067occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 6322 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1943 NumberOfCodeBlocks, 1943 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1764 ConstructedInterpolants, 0 QuantifiedInterpolants, 335582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 1547/1551 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...